NOT useful!
", "tags": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "JTR3GGV3", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/JTR3GGV3", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/JTR3GGV3", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Larionov et al.", "parsedDate": "1999-10-01", "numChildren": 0 }, "data": { "key": "JTR3GGV3", "version": 1, "itemType": "journalArticle", "title": "Survey of bipolar outflows and methanol masers in the C(32) S (2-1) and C(34) S (2-1) lines in the Northern sky", "creators": [ { "creatorType": "author", "firstName": "G. M.", "lastName": "Larionov" }, { "creatorType": "author", "firstName": "I. E.", "lastName": "Val'tts" }, { "creatorType": "author", "firstName": "A.", "lastName": "Winnberg" }, { "creatorType": "author", "firstName": "L. E. B.", "lastName": "Johansson" }, { "creatorType": "author", "firstName": "R. S.", "lastName": "Booth" }, { "creatorType": "author", "firstName": "V. V.", "lastName": "Golubev" } ], "abstractNote": "A survey of 158 sources (bipolar outflows and methanol masers) was\ncarried out in the CS(2-1) and C(34) S(2-1) lines to measure and compare\ndensities in a large number of bipolar outflows and in Class I and Class\nII methanol masers, both associated with and unrelated to bipolar\noutflows. The statistical characteristics of the regions, forming Class\nI methanol masers differ from those both in the centres of bipolar\noutflows and in the regions forming Class II methanol masers. It is\npossible that physical conditions in bipolar outflows are closer to\nphysical conditions of Class II methanol masers. Figures i and ii are\nonly available in electronic form at http://www.edpsciences.com", "publicationTitle": "Astronomy and Astrophysics Supplement Series", "publisher": "", "place": "", "date": "October 1, 1999", "volume": "139", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "257-275", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/1999A%26AS..139..257L", "accessDate": "2009-10-11T18:41:30Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "ISM: GENERAL", "type": 1 }, { "tag": "ISM: JETS AND OUTFLOWS", "type": 1 }, { "tag": "MOLECULES", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "JFF7C76J", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/JFF7C76J", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/JFF7C76J", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Minier et al.", "parsedDate": "2005-01-01", "numChildren": 0 }, "data": { "key": "JFF7C76J", "version": 1, "itemType": "journalArticle", "title": "Star-forming protoclusters associated with methanol masers", "creators": [ { "creatorType": "author", "firstName": "V.", "lastName": "Minier" }, { "creatorType": "author", "firstName": "M. G.", "lastName": "Burton" }, { "creatorType": "author", "firstName": "T.", "lastName": "Hill" }, { "creatorType": "author", "firstName": "M. R.", "lastName": "Pestalozzi" }, { "creatorType": "author", "firstName": "C. R.", "lastName": "Purcell" }, { "creatorType": "author", "firstName": "G.", "lastName": "Garay" }, { "creatorType": "author", "firstName": "A. J.", "lastName": "Walsh" }, { "creatorType": "author", "firstName": "S.", "lastName": "Longmore" } ], "abstractNote": "We present a multiwavelength study of five methanol maser sites which\nare not directly associated with a strong (>100 mJy) radio continuum\nsource: G 31.28+0.06, G 59.78+0.06, G 173.49+2.42 (S231, S233IR), G\n188.95+0.89 (S252, AFGL5180) and G 192.60-0.05 (S255IR). These\nradio-quiet methanol maser sites are often interpreted as precursors of\nultra-compact H II regions or massive protostar sites. In this work, the\nenvironment of methanol masers is probed from mid-IR to millimetre\nwavelengths at angular resolutions of 8''-34''. Spectral energy\ndistribution (SED) diagrams for each site are presented, together with\nmass and luminosity estimates. Each radio-quiet maser site is always\nassociated with a massive (>50 Mȯ), deeply embedded\n(Av>40 mag) and very luminous (>104\nLȯ) molecular clump, with Ltotal∝\nMgas0.75. These physical properties characterise\nmassive star-forming clumps in earlier evolutionary phases than H II\nregions. In addition, colder gas clumps seen only at mm-wavelengths are\nalso found near the methanol maser sites. These colder clumps may\nrepresent an even earlier phase of massive star formation. These results\nsuggest an evolutionary sequence for massive star formation from a cold\nclump, seen only at mm wavelengths, evolving to a hot molecular core\nwith a two-component SED with peaks at far-IR and mid-IR wavelengths, to\nan (ultra-compact) H II region. Alternatively, the cold clumps might be\nclusters of low-mass YSOs, in formation near the massive star-forming\nclusters. Finally, the values of the dust grain emissivity index\n(β) range between 1.6 and 1.9.", "publicationTitle": "Astronomy and Astrophysics", "publisher": "", "place": "", "date": "January 1, 2005", "volume": "429", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "945-960", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2005A%26A...429..945M", "accessDate": "2009-08-15T01:32:13Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Extinction", "type": 1 }, { "tag": "ISM: dust", "type": 1 }, { "tag": "MASERS", "type": 1 }, { "tag": "Stars: Formation", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "PBT9IS53", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/PBT9IS53", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/PBT9IS53", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Kennicutt", "parsedDate": "1998", "numChildren": 1 }, "data": { "key": "PBT9IS53", "version": 1, "itemType": "journalArticle", "title": "Star Formation in Galaxies Along the Hubble Sequence", "creators": [ { "creatorType": "author", "firstName": "Robert C.", "lastName": "Kennicutt" } ], "abstractNote": "Observations of star formation rates (SFRs) in galaxies provide vital\nclues to the physical nature of the Hubble sequence and are key probes\nof the evolutionary histories of galaxies. The focus of this review is\non the broad patterns in the star formation properties of galaxies along\nthe Hubble sequence and their implications for understanding galaxy\nevolution and the physical processes that drive the evolution. Star\nformation in the disks and nuclear regions of galaxies are reviewed\nseparately, then discussed within a common interpretive framework. The\ndiagnostic methods used to measure SFRs are also reviewed, and a\nself-consistent set of SFR calibrations is presented as an aid to\nworkers in the field.", "publicationTitle": "Annual Review of Astronomy and Astrophysics", "publisher": "", "place": "", "date": "1998", "volume": "36", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "189-232", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/1998ARA%26A..36..189K", "accessDate": "2009-10-30T15:34:15Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "QNEER4NI", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/QNEER4NI", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/QNEER4NI", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Thompson et al.", "parsedDate": "2004-02-01", "numChildren": 0 }, "data": { "key": "QNEER4NI", "version": 1, "itemType": "journalArticle", "title": "Searching for signs of triggered star formation toward IC 1848", "creators": [ { "creatorType": "author", "firstName": "M. A.", "lastName": "Thompson" }, { "creatorType": "author", "firstName": "G. J.", "lastName": "White" }, { "creatorType": "author", "firstName": "L. K.", "lastName": "Morgan" }, { "creatorType": "author", "firstName": "J.", "lastName": "Miao" }, { "creatorType": "author", "firstName": "C. V. M.", "lastName": "Fridlund" }, { "creatorType": "author", "firstName": "M.", "lastName": "Huldtgren-White" } ], "abstractNote": "We have carried out an in-depth study of three bright-rimmed clouds\nSFO 11, SFO 11NE and SFO 11E\nassociated with the HII region IC 1848, using observations carried out\nat the James Clerk Maxwell Telescope (JCMT) and the Nordic Optical\nTelescope (NOT), plus archival data from IRAS, 2MASS and the NVSS. We\nshow that the overall morphology of the clouds is reasonably consistent\nwith that of radiative-driven implosion (RDI) models developed to\npredict the evolution of cometary globules. There is evidence for a\nphotoevaporated flow from the surface of each cloud and, based upon the\nmorphology and pressure balance of the clouds, it is possible that\nD-critical ionisation fronts are propagating into the molecular gas. The\nprimary O star responsible for ionising the surfaces of the clouds is\nthe 06V star HD 17505. Each cloud is associated with\neither recent or ongoing star formation: we have detected 8 sub-mm cores\nwhich possess the hallmarks of protostellar cores and identify YSO\ncandidates from 2MASS data. We infer the past and future evolution of\nthe clouds and demonstrate via a simple pressure-based argument that the\nUV illumination may have induced the collapse of the dense molecular\ncores found at the head of SFO 11 and SFO\n11E.", "publicationTitle": "Astronomy and Astrophysics", "publisher": "", "place": "", "date": "February 1, 2004", "volume": "414", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "1017-1041", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2004A%26A...414.1017T", "accessDate": "2009-08-11T23:10:17Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "ISM: HII REGIONS", "type": 1 }, { "tag": "ISM: Molecules", "type": 1 }, { "tag": "ISM: clouds", "type": 1 }, { "tag": "ISM: dust", "type": 1 }, { "tag": "ISM: individual objects: IC 1848", "type": 1 }, { "tag": "Stars: Formation", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "FMUF7VGD", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/FMUF7VGD", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/FMUF7VGD", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Anderson and Bania", "parsedDate": "2009-01-01", "numChildren": 0 }, "data": { "key": "FMUF7VGD", "version": 1, "itemType": "journalArticle", "title": "Resolution of the Distance Ambiguity for Galactic H II Regions", "creators": [ { "creatorType": "author", "firstName": "L. D.", "lastName": "Anderson" }, { "creatorType": "author", "firstName": "T. M.", "lastName": "Bania" } ], "abstractNote": "We resolve the kinematic distance ambiguity for 266 inner Galaxy H II\nregions out of a sample of 291 using existing H I and 13CO\nsky surveys. Our sample contains all H II regions with measured radio\nrecombination line emission over the extent of the 13CO\nBoston University-Five College Radio Astronomy Observatory Galactic Ring\nSurvey (18° < l < 55° and |b| < 1) and contains ultra\ncompact (UC), compact, and diffuse H II regions. We use two methods for\nresolving the distance ambiguity for each H II region: H I\nemission/absorption (H I E/A) and H I self-absorption (H I SA). We find\nthat the H I E/A and H I SA methods can resolve the distance ambiguity\nfor 72% and 87% of our sample, respectively. When projected onto the\nGalactic plane, this large sample appears to reveal aspects of Galactic\nstructure, with spiral arm-like features at Galactocentric radii of 4.5\nand 6 kpc, and a lack of H II regions within 3.5 kpc of the Galactic\ncenter. Our H II regions are approximately in the ratio of 2 to 1 for\nfar versus near distances. The ratio of far-to-near distances for UC H\nII regions is 2.2 to 1. Compact H II regions are preferentially at the\nnear distance; their ratio of far-to-near distances is 1.6 to 1. Diffuse\nH II regions are preferentially at the far distance; their ratio of\nfar-to-near distances is 3.8 to 1. This implies that the distinction\nbetween UC and compact H II regions is largely due to distance, and that\nthe large angular size of diffuse H II regions is not solely due to\nproximity to the Sun.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "January 1, 2009", "volume": "690", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "706-719", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2009ApJ...690..706A", "accessDate": "2009-07-10T17:36:43Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "H II regions", "type": 1 }, { "tag": "ISM: Molecules", "type": 1 }, { "tag": "RADIO LINES: ISM", "type": 1 }, { "tag": "Stars: Formation", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "Z49NRRBI", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/Z49NRRBI", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/Z49NRRBI", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Wenzel and Fuhrmann", "parsedDate": "1983", "numChildren": 0 }, "data": { "key": "Z49NRRBI", "version": 1, "itemType": "journalArticle", "title": "Remark on the Nature of the Eruptive Object Lw-Cassiopeiae", "creators": [ { "creatorType": "author", "firstName": "W.", "lastName": "Wenzel" }, { "creatorType": "author", "firstName": "B.", "lastName": "Fuhrmann" } ], "abstractNote": "Since the outburst of 1952/1953 no further eruption seems to have been\noccurred. The fan-shaped nebular appendix to the east of the star is a\ngas nebula of low excitation. The star itself shows neither emission nor\nabsorption lines in poorly exposed spectrograms. The possibility that\nthis is an FU Ori type star after a recurrent outburst is shortly\ndiscussed.", "publicationTitle": "Zentralinstitut fuer Astrophysik Sternwarte Sonneberg Mitteilungen ueber Veraenderliche Sterne", "publisher": "", "place": "", "date": "1983", "volume": "9", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "143", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://cdsads.u-strasbg.fr/abs/1983MitVS...9..143W", "accessDate": "2009-10-21T15:45:49Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "CZENXNNV", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/CZENXNNV", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/CZENXNNV", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Bica et al.", "parsedDate": "2003", "numChildren": 1 }, "data": { "key": "CZENXNNV", "version": 1, "itemType": "journalArticle", "title": "New infrared star clusters in the Northern and Equatorial Milky Way with 2MASS", "creators": [ { "creatorType": "author", "firstName": "E.", "lastName": "Bica" }, { "creatorType": "author", "firstName": "C. M.", "lastName": "Dutra" }, { "creatorType": "author", "firstName": "J.", "lastName": "Soares" }, { "creatorType": "author", "firstName": "B.", "lastName": "Barbuy" } ], "abstractNote": "", "publicationTitle": "Astronomy and Astrophysics", "publisher": "", "place": "", "date": "2003", "volume": "404", "issue": "1", "section": "", "partNumber": "", "partTitle": "", "pages": "10 pages", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1051/0004-6361:20030486", "citationKey": "", "url": "", "accessDate": "", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "MJHKUTTG", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/MJHKUTTG", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/MJHKUTTG", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Cesaroni et al.", "parsedDate": "1991-12-01", "numChildren": 0 }, "data": { "key": "MJHKUTTG", "version": 1, "itemType": "journalArticle", "title": "Molecular clumps associated with ultra compact H II regions", "creators": [ { "creatorType": "author", "firstName": "R.", "lastName": "Cesaroni" }, { "creatorType": "author", "firstName": "C. M.", "lastName": "Walmsley" }, { "creatorType": "author", "firstName": "C.", "lastName": "Koempe" }, { "creatorType": "author", "firstName": "E.", "lastName": "Churchwell" } ], "abstractNote": "J = 2-1, 3-2 and 5-4 C(S-34) observations have been carried out toward\neight ultracompact H II regions that are prominent in ammonia emission.\nIn several cases, high density (about 10 exp 6/cu cm) clumps with mass\nabout 2000 solar masses and size about 0.4 pc around the ionized gas.\nThe results are consistent with the idea that O-B stars form in high\ndensity surroundings. The clumps appear to be in virial equilibrium, and\ntheir size is consistent with that required by the bow shock model for\nultracompact H II regions. Predictions of different models for the\nevolution of H II regions are discussed. Detections of torsionally\nexcited methanol toward G10.47 and G31.41 are also reported.", "publicationTitle": "Astronomy and Astrophysics", "publisher": "", "place": "", "date": "December 1, 1991", "volume": "252", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "278-290", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/1991A%26A...252..278C", "accessDate": "2009-10-11T18:37:16Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "BRIGHTNESS TEMPERATURE", "type": 1 }, { "tag": "H II regions", "type": 1 }, { "tag": "INTERSTELLAR GAS", "type": 1 }, { "tag": "INTERSTELLAR MATTER", "type": 1 }, { "tag": "IONIZED GASES", "type": 1 }, { "tag": "LINE SPECTRA", "type": 1 }, { "tag": "METHYL ALCOHOL", "type": 1 }, { "tag": "MOLECULAR CLOUDS", "type": 1 }, { "tag": "MOLECULAR GASES", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:11Z", "dateModified": "2009-10-30T17:27:11Z" } }, { "key": "RZZBISDX", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/RZZBISDX", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/RZZBISDX", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Margulis et al.", "parsedDate": "1989-10-01", "numChildren": 0 }, "data": { "key": "RZZBISDX", "version": 1, "itemType": "journalArticle", "title": "Young stellar objects in the Monoceros OB1 molecular cloud", "creators": [ { "creatorType": "author", "firstName": "Michael", "lastName": "Margulis" }, { "creatorType": "author", "firstName": "Charles J.", "lastName": "Lada" }, { "creatorType": "author", "firstName": "Erick T.", "lastName": "Young" } ], "abstractNote": "Detailed results of an IRAS survey of a large portion of the Monoceros\nOB1 molecular cloud for discrete far-IR sources are presented. IRAS\nspectral energy distributions are constructed for 27 of the 30 sources\nidentified in the region. Many are bright class I energy distributions,\nindicating that star formation is still occurring in the complex which\nproduced the visible cluster, NGC 2264. Far-IR luminosities are\ncalculated for each source, and the bolometric luminosity functions for\nclass I and class II sources in the Mon OB1 cloud are found to be\nsignificantly different. Of all class I and II sources more luminous\nthan 5 solar, 50 percent of class I sources are more luminous than 60\nsolar while only 4 percent of class II sources are. An attempt is made\nto determine the type of young stellar object in the cloud with which\nmolecular outflows are associated.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "October 1, 1989", "volume": "345", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "906-917", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/1989ApJ...345..906M", "accessDate": "2009-08-11T22:10:17Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "ASTRONOMICAL MAPS", "type": 1 }, { "tag": "FAR INFRARED RADIATION", "type": 1 }, { "tag": "INFRARED ASTRONOMY SATELLITE", "type": 1 }, { "tag": "INFRARED SOURCES (ASTRONOMY)", "type": 1 }, { "tag": "MOLECULAR CLOUDS", "type": 1 }, { "tag": "MOLECULAR GASES", "type": 1 }, { "tag": "NEBULAE", "type": 1 }, { "tag": "PRE-MAIN SEQUENCE STARS", "type": 1 }, { "tag": "SPECTRAL ENERGY DISTRIBUTION", "type": 1 }, { "tag": "STAR FORMATION", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "7VT3STNK", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/7VT3STNK", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/7VT3STNK", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Reid et al.", "parsedDate": "2009-07-01", "numChildren": 0 }, "data": { "key": "7VT3STNK", "version": 1, "itemType": "journalArticle", "title": "Trigonometric Parallaxes of Massive Star-Forming Regions. VI. Galactic Structure, Fundamental Parameters, and Noncircular Motions", "creators": [ { "creatorType": "author", "firstName": "M. J.", "lastName": "Reid" }, { "creatorType": "author", "firstName": "K. M.", "lastName": "Menten" }, { "creatorType": "author", "firstName": "X. W.", "lastName": "Zheng" }, { "creatorType": "author", "firstName": "A.", "lastName": "Brunthaler" }, { "creatorType": "author", "firstName": "L.", "lastName": "Moscadelli" }, { "creatorType": "author", "firstName": "Y.", "lastName": "Xu" }, { "creatorType": "author", "firstName": "B.", "lastName": "Zhang" }, { "creatorType": "author", "firstName": "M.", "lastName": "Sato" }, { "creatorType": "author", "firstName": "M.", "lastName": "Honma" }, { "creatorType": "author", "firstName": "T.", "lastName": "Hirota" }, { "creatorType": "author", "firstName": "K.", "lastName": "Hachisuka" }, { "creatorType": "author", "firstName": "Y. K.", "lastName": "Choi" }, { "creatorType": "author", "firstName": "G. A.", "lastName": "Moellenbrock" }, { "creatorType": "author", "firstName": "A.", "lastName": "Bartkiewicz" } ], "abstractNote": "We are using the Very Long Baseline Array and the Japanese VLBI\nExploration of Radio Astronomy project to measure trigonometric\nparallaxes and proper motions of masers found in high-mass star-forming\nregions across the Milky Way. Early results from 18 sources locate\nseveral spiral arms. The Perseus spiral arm has a pitch angle of 16°\n± 3°, which favors four rather than two spiral arms for the\nGalaxy. Combining positions, distances, proper motions, and radial\nvelocities yields complete three-dimensional kinematic information. We\nfind that star-forming regions on average are orbiting the Galaxy ≈15\nkm s–1 slower than expected for circular orbits. By\nfitting the measurements to a model of the Galaxy, we estimate the\ndistance to the Galactic center R 0 = 8.4 ±\n0.6 kpc and a circular rotation speed Θ0 = 254\n± 16 km s–1. The ratio\nΘ0/R 0 can be determined to higher accuracy\nthan either parameter individually, and we find it to be 30.3 ±\n0.9 km s–1 kpc–1, in good\nagreement with the angular rotation rate determined from the proper\nmotion of Sgr A*. The data favor a rotation curve for the Galaxy\nthat is nearly flat or slightly rising with Galactocentric distance.\nKinematic distances are generally too large, sometimes by factors\ngreater than 2; they can be brought into better agreement with the\ntrigonometric parallaxes by increasing Θ0/R\n0 from the IAU recommended value of 25.9 km\ns–1 kpc–1 to a value near\n30 km s–1 kpc–1. We offer a\n\"revised\" prescription for calculating kinematic distances and their\nuncertainties, as well as a new approach for defining Galactic\ncoordinates. Finally, our estimates of Θ0 and\nΘ0/R 0, when coupled with direct estimates\nof R 0, provide evidence that the rotation curve of the Milky\nWay is similar to that of the Andromeda galaxy, suggesting that the dark\nmatter halos of these two dominant Local Group galaxy are comparably\nmassive.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "July 1, 2009", "volume": "700", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "137-148", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2009ApJ...700..137R", "accessDate": "2009-10-11T18:58:11Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Galaxy: Kinematics and Dynamics", "type": 1 }, { "tag": "Galaxy: Structure", "type": 1 }, { "tag": "Galaxy: fundamental parameters", "type": 1 }, { "tag": "Galaxy: halo", "type": 1 }, { "tag": "Stars: Formation", "type": 1 }, { "tag": "astrometry", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "XI58EJV8", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/XI58EJV8", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/XI58EJV8", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Karr and Martin", "parsedDate": "2003-10-01", "numChildren": 0 }, "data": { "key": "XI58EJV8", "version": 1, "itemType": "journalArticle", "title": "Triggered Star Formation in the W5 H II Region", "creators": [ { "creatorType": "author", "firstName": "J. L.", "lastName": "Karr" }, { "creatorType": "author", "firstName": "P. G.", "lastName": "Martin" } ], "abstractNote": "Young, massive stars can have a profound effect on the surrounding\ninterstellar medium. The triggering of star formation by an H II region\nexpanding into nearby molecular material is an example of this type of\ninteraction. This paper presents a multiwavelength study of the W5\nstar-forming region investigating the possibility of triggered star\nformation. The ionizing sources and the morphologies of the ionized and\nmolecular gas and the dust are examined. A population of YSOs is\nidentified. Statistical evidence for triggering of these YSOs is\ndiscussed in terms of the spatial dependence of the star formation\nefficiency and the clustering and correlation of the YSO sources with\nrespect to the molecular gas and the H II region. Evidence for direct\ninteractions between the components is discussed, on both large scales\nand the scale of individual objects. Timescales for the expansion of the\nH II region, triggering processes, and the ages of the YSOs are compared\nto establish a plausible sequence of events.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "October 1, 2003", "volume": "595", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "900-912", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2003ApJ...595..900K", "accessDate": "2009-08-11T23:05:47Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "ISM: H II Regions", "type": 1 }, { "tag": "ISM: Individual: Alphanumeric: W5", "type": 1 }, { "tag": "Stars: Formation", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "WKEGDSG2", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/WKEGDSG2", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/WKEGDSG2", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Weidner et al.", "parsedDate": "2009", "numChildren": 0 }, "data": { "key": "WKEGDSG2", "version": 1, "itemType": "journalArticle", "title": "The relation between the most-massive star and its parental star cluster mass", "creators": [ { "creatorType": "author", "firstName": "C.", "lastName": "Weidner" }, { "creatorType": "author", "firstName": "P.", "lastName": "Kroupa" }, { "creatorType": "author", "firstName": "I. A. D.", "lastName": "Bonnell" } ], "abstractNote": "We present a thorough literature study of the most-massive star, mmax, in several young star clusters in order to assess whether or not star clusters are populated from the stellar initial mass function (IMF) by random sampling over the mass range 0.01 2264m2264 150 M2299 without being constrained by the cluster mass, Mecl. The data reveal a partition of the sample into lowest mass objects (Mecl2264 102 M2299), moderate mass clusters (102 M2299 < Mecl2264 103 M2299) and rich clusters above 103 M2299. Additionally, there is a plateau of a constant maximal star mass (mmax2248 25 M2299) for clusters with masses between 103 M2299 and 4 × 103 M2299. Statistical tests of this data set reveal that the hypothesis of random sampling from the IMF between 0.01 and 150 M2299 is highly unlikely for star clusters more massive than 102 M2299 with a probability of p2248 2 × 1022127 for the objects with Mecl between 102 and 103 M2299 and p2248 3 × 1022129 for the more massive star clusters. Also, the spread of mmax values at a given Mecl is smaller than expected from random sampling. We suggest that the basic physical process able to explain this dependence of stellar inventory of a star cluster on its mass may be the interplay between stellar feedback and the binding energy of the cluster-forming molecular cloud core. Given these results, it would follow that an integrated galactic IMF (IGIMF) sampled from such clusters would automatically be steeper in comparison to the IMF within individual star clusters.", "publicationTitle": "Monthly Notices of the Royal Astronomical Society", "publisher": "", "place": "", "date": "2009", "volume": "9999", "issue": "9999", "section": "", "partNumber": "", "partTitle": "", "pages": "", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "10.1111/j.1365-2966.2009.15633.x", "citationKey": "", "url": "http://dx.doi.org/10.1111/j.1365-2966.2009.15633.x", "accessDate": "2009-10-30T13:42:02Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "Wiley InterScience", "callNumber": "", "rights": "", "extra": "", "tags": [], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "WFUI5K44", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/WFUI5K44", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/WFUI5K44", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Anderson et al.", "parsedDate": "2009-03-01", "numChildren": 0 }, "data": { "key": "WFUI5K44", "version": 1, "itemType": "journalArticle", "title": "The Molecular Properties of Galactic H II Regions", "creators": [ { "creatorType": "author", "firstName": "L. D.", "lastName": "Anderson" }, { "creatorType": "author", "firstName": "T. M.", "lastName": "Bania" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Jackson" }, { "creatorType": "author", "firstName": "D. P.", "lastName": "Clemens" }, { "creatorType": "author", "firstName": "M.", "lastName": "Heyer" }, { "creatorType": "author", "firstName": "R.", "lastName": "Simon" }, { "creatorType": "author", "firstName": "R. Y.", "lastName": "Shah" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Rathborne" } ], "abstractNote": "We derive the molecular properties for a sample of 301 Galactic\nH II regions including 123 ultra compact (UC), 105 compact, and 73\ndiffuse nebulae. We analyze all sources within the BU-FCRAO Galactic\nRing Survey (GRS) of 13CO emission known to be H II\nregions based upon the presence of radio continuum and cm-wavelength\nradio recombination line emission. Unlike all previous large area\ncoverage 13CO surveys, the GRS is fully sampled in angle and\nyet covers ~75 deg2 of the Inner Galaxy. The angular\nresolution of the GRS (46'') allows us to associate molecular gas with\nH II regions without ambiguity and to investigate the physical\nproperties of this molecular gas. We find clear CO/H II\nmorphological associations in position and velocity for ~80% of the\nnebular sample. Compact H II region molecular gas clouds are on\naverage larger than UC clouds: 2farcm2 compared to 1farcm7. Compact and\nUC H II regions have very similar molecular properties, with ~5 K\nline intensities and ~4 km s–1 line widths. The diffuse\nH II region molecular gas has lower line intensities, ~3 K, and\nsmaller line widths, ~3.5 km s–1. These latter\ncharacteristics are similar to those found for quiescent molecular\nclouds in the GRS. Our sample nebulae thus show evidence for an\nevolutionary sequence wherein small, dense molecular gas clumps\nassociated with UC H II regions grow into older compact nebulae and\nfinally fragment and dissipate into large, diffuse nebulae.", "publicationTitle": "Astrophysical Journal Supplement Series", "publisher": "", "place": "", "date": "March 1, 2009", "volume": "181", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "255-271", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2009ApJS..181..255A", "accessDate": "2009-07-10T17:37:29Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "H II regions", "type": 1 }, { "tag": "ISM: clouds", "type": 1 }, { "tag": "ISM: evolution", "type": 1 }, { "tag": "ISM: lines and bands", "type": 1 }, { "tag": "ISM: structure", "type": 1 }, { "tag": "RADIO LINES: ISM", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "5X5VQ7IG", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/5X5VQ7IG", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/5X5VQ7IG", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Vacca et al.", "parsedDate": "1996-04-01", "numChildren": 0 }, "data": { "key": "5X5VQ7IG", "version": 1, "itemType": "journalArticle", "title": "The Lyman-Continuum Fluxes and Stellar Parameters of O and Early B-Type Stars", "creators": [ { "creatorType": "author", "firstName": "William D.", "lastName": "Vacca" }, { "creatorType": "author", "firstName": "Catharine D.", "lastName": "Garmany" }, { "creatorType": "author", "firstName": "J. Michael", "lastName": "Shull" } ], "abstractNote": "Using the results of the most recent stellar atmosphere models applied\nto a sample of hot stars, we construct calibrations of effective\ntemperature (Teff), and gravity (log g) with a spectral type\nand luminosity class for Galactic O-type and early B-type stars. From\nthe model results we also derive an empirical relation between the\nbolometric correction and Teff and log g. Using a sample of\nstars with known distances located in OB associations in the Galaxy and\nthe Large Magellanic Cloud, we derive a new calibration of\nMυ with spectral class. With these new calibrations and\nthe stellar atmosphere models of Kurucz, we calculate the physical\nparameters and ionizing photon luminosities in the H0 and\nHe0 continua for O and early B-type stars. We find\nsubstantial differences between our values of the Lyman- continuum\nluminosity and those reported in the literature. We also discuss the\nsystematic discrepancy between O-type stellar masses derived from\nspectroscopic models and those derived from evolutionary tracks. Most\nlikely, the cause of this \"mass discrepancy\" lies primarily in the\natmospheric models, which are plane parallel and hydrostatic and\ntherefore do not account for an extended atmosphere and the velocity\nfields in a stellar wind. Finally, we present a new computation of the\nLyman-continuum luminosity from 429 known O stars located within 2.5 kpc\nof the Sun. We find the total ionizing luminosity from this population\n(Q0Tot = 7.0 × 1051 photons\ns-1) to be 47% larger than that determined using the Lyman\ncontinuum values tabulated by Panagia.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "April 1, 1996", "volume": "460", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "914", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/1996ApJ...460..914V", "accessDate": "2009-08-11T23:42:10Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "STARS: ATMOSPHERES", "type": 1 }, { "tag": "STARS: FUNDAMENTAL PARAMETERS", "type": 1 }, { "tag": "Stars: Early-Type", "type": 1 }, { "tag": "ULTRAVIOLET: STARS", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "Z56UFWEQ", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/Z56UFWEQ", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/Z56UFWEQ", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Wilking et al.", "parsedDate": "1984-04-01", "numChildren": 0 }, "data": { "key": "Z56UFWEQ", "version": 1, "itemType": "journalArticle", "title": "The formation of massive stars along the W5 ionization front", "creators": [ { "creatorType": "author", "firstName": "B. A.", "lastName": "Wilking" }, { "creatorType": "author", "firstName": "C. R.", "lastName": "Doering" }, { "creatorType": "author", "firstName": "P. M.", "lastName": "Harvey" }, { "creatorType": "author", "firstName": "C. J.", "lastName": "Lada" }, { "creatorType": "author", "firstName": "M.", "lastName": "Joy" } ], "abstractNote": "Far-infrared, near-infrared, millimeter-wave, and optical data are\npresented for two of the large molecular clouds which border the W5 (IC\n1848) giant H II region. These data are combined to identify three B0-B2\nzero-age main-sequence stars which are forming in these clouds and to\nstudy the density distribution and kinematic structure of their\nsurrounding molecular gas. This investigation into the environment in\nwhich massive stars have formed in these clouds, when considered\nalongside similar studies of the W5A/S201 molecular cloud, leads to the\nconclusion that the expanding W5 H II region has played an important\nrole in initiating the formation of these massive stars.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "April 1, 1984", "volume": "279", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "291-303", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/1984ApJ...279..291W", "accessDate": "2009-08-11T23:01:44Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "CARBON MONOXIDE", "type": 1 }, { "tag": "FAR INFRARED RADIATION", "type": 1 }, { "tag": "GAS DENSITY", "type": 1 }, { "tag": "H II regions", "type": 1 }, { "tag": "INFRARED ASTRONOMY", "type": 1 }, { "tag": "MOLECULAR CLOUDS", "type": 1 }, { "tag": "NEBULAE", "type": 1 }, { "tag": "STELLAR EVOLUTION", "type": 1 }, { "tag": "STELLAR MASS", "type": 1 }, { "tag": "VISIBLE SPECTRUM", "type": 1 }, { "tag": "W5" } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "6BBH2ZIU", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/6BBH2ZIU", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/6BBH2ZIU", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Simon et al.", "parsedDate": "2006-12-01", "numChildren": 0 }, "data": { "key": "6BBH2ZIU", "version": 1, "itemType": "journalArticle", "title": "The Characterization and Galactic Distribution of Infrared Dark Clouds", "creators": [ { "creatorType": "author", "firstName": "R.", "lastName": "Simon" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Rathborne" }, { "creatorType": "author", "firstName": "R. Y.", "lastName": "Shah" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Jackson" }, { "creatorType": "author", "firstName": "E. T.", "lastName": "Chambers" } ], "abstractNote": "Using 13CO J=1-->0 molecular line emission from the Boston\nUniversity-Five College Radio Astronomy Observatory Galactic Ring Survey\n(BU-FCRAO GRS), we have established kinematic distances to 313 infrared\ndark clouds (IRDCs) by matching the morphology of the molecular line\nemission in distinct velocity channels to their mid-infrared extinction.\nThe Galactic distribution of IRDCs shows an enhancement toward the\nGalaxy's most massive and active star-forming structure, the so-called 5\nkpc ring. IRDCs have typical sizes of ~5 pc, peak column densities of\n~1022 cm-2, LTE masses of ~5×103\nMsolar, and volume-averaged H2 densities of\n~2×103 cm-3. The similarity of these\nproperties to those of molecular clumps associated with active star\nformation suggests that IRDCs represent the densest clumps within giant\nmolecular clouds where clusters may eventually form.", "publicationTitle": "Astrophysical Journal", "publisher": "", "place": "", "date": "December 1, 2006", "volume": "653", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "1325-1335", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2006ApJ...653.1325S", "accessDate": "2009-06-24T21:10:46Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Extinction", "type": 1 }, { "tag": "Galaxy: Structure", "type": 1 }, { "tag": "ISM: dust", "type": 1 }, { "tag": "Infrared: ISM", "type": 1 }, { "tag": "RADIO LINES: ISM", "type": 1 }, { "tag": "Stars: Formation", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "ACGI6W7B", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/ACGI6W7B", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/ACGI6W7B", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Lavoie et al.", "parsedDate": "2006-03-01", "numChildren": 0 }, "data": { "key": "ACGI6W7B", "version": 1, "itemType": "journalArticle", "title": "The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey", "creators": [ { "creatorType": "author", "firstName": "R.", "lastName": "Lavoie" }, { "creatorType": "author", "firstName": "M. H.", "lastName": "Heyer" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Jackson" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Rathborne" }, { "creatorType": "author", "firstName": "R. Y.", "lastName": "Shah" }, { "creatorType": "author", "firstName": "R.", "lastName": "Simon" }, { "creatorType": "author", "firstName": "T. M.", "lastName": "Bania" }, { "creatorType": "author", "firstName": "D. P.", "lastName": "Clemens" }, { "creatorType": "author", "firstName": "E. T.", "lastName": "Chambers" }, { "creatorType": "author", "firstName": "A. M.", "lastName": "Johnson" }, { "creatorType": "author", "firstName": "M.", "lastName": "Dormody" } ], "abstractNote": "The Boston University-Five College Radio Astronomy Observatory Galactic\nRing Survey is a new survey of Galactic 13CO J=1-->0\nemission. The survey used the SEQUOIA multipixel array on the Five\nCollege Radio Astronomy Observatory 14 m telescope to cover a longitude\nrange of l=18deg-55.7d and a latitude range of\n|b|<1deg, a total of 75.4 deg2. Using both\nposition-switching and On-The-Fly mapping modes, we achieved an angular\nsampling of 22\", better than half of the telescope's 46\" angular\nresolution. The survey's velocity coverage is -5 to 135 km\ns-1 for Galactic longitudes l<=40deg and -5 to\n85 km s-1 for Galactic longitudes l>40deg. At\nthe velocity resolution of 0.21 km s-1, the typical rms\nsensitivity is σ(T*A)~0.13 K. The survey\ncomprises a total of 1,993,522 spectra. We show integrated intensity\nimages (zeroth moment maps), channel maps, position-velocity diagrams,\nand an average spectrum of the completed survey data set. We also\ndiscuss the telescope and instrumental parameters, the observing modes,\nthe data reduction processes, and the emission and noise characteristics\nof the data set. The Galactic Ring Survey data are available to the\ncommunity online or in DVD form by request.", "publicationTitle": "Astrophysical Journal Supplement Series", "publisher": "", "place": "", "date": "March 1, 2006", "volume": "163", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "145-159", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2006ApJS..163..145J", "accessDate": "2009-10-11T18:40:02Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Galaxy: Kinematics and Dynamics", "type": 1 }, { "tag": "ISM: Molecules", "type": 1 }, { "tag": "ISM: clouds", "type": 1 }, { "tag": "Radio Lines: General", "type": 1 }, { "tag": "Surveys", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "ZH83F7J5", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/ZH83F7J5", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/ZH83F7J5", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Jackson et al.", "parsedDate": "2006-03-01", "numChildren": 0 }, "data": { "key": "ZH83F7J5", "version": 1, "itemType": "journalArticle", "title": "The Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey", "creators": [ { "creatorType": "author", "firstName": "J. M.", "lastName": "Jackson" }, { "creatorType": "author", "firstName": "J. M.", "lastName": "Rathborne" }, { "creatorType": "author", "firstName": "R. Y.", "lastName": "Shah" }, { "creatorType": "author", "firstName": "R.", "lastName": "Simon" }, { "creatorType": "author", "firstName": "T. M.", "lastName": "Bania" }, { "creatorType": "author", "firstName": "D. P.", "lastName": "Clemens" }, { "creatorType": "author", "firstName": "E. T.", "lastName": "Chambers" }, { "creatorType": "author", "firstName": "A. M.", "lastName": "Johnson" }, { "creatorType": "author", "firstName": "M.", "lastName": "Dormody" }, { "creatorType": "author", "firstName": "R.", "lastName": "Lavoie" }, { "creatorType": "author", "firstName": "M. H.", "lastName": "Heyer" } ], "abstractNote": "The Boston University-Five College Radio Astronomy Observatory Galactic\nRing Survey is a new survey of Galactic 13CO J=1-->0\nemission. The survey used the SEQUOIA multipixel array on the Five\nCollege Radio Astronomy Observatory 14 m telescope to cover a longitude\nrange of l=18deg-55.7d and a latitude range of\n|b|<1deg, a total of 75.4 deg2. Using both\nposition-switching and On-The-Fly mapping modes, we achieved an angular\nsampling of 22\", better than half of the telescope's 46\" angular\nresolution. The survey's velocity coverage is -5 to 135 km\ns-1 for Galactic longitudes l<=40deg and -5 to\n85 km s-1 for Galactic longitudes l>40deg. At\nthe velocity resolution of 0.21 km s-1, the typical rms\nsensitivity is σ(T*A)~0.13 K. The survey\ncomprises a total of 1,993,522 spectra. We show integrated intensity\nimages (zeroth moment maps), channel maps, position-velocity diagrams,\nand an average spectrum of the completed survey data set. We also\ndiscuss the telescope and instrumental parameters, the observing modes,\nthe data reduction processes, and the emission and noise characteristics\nof the data set. The Galactic Ring Survey data are available to the\ncommunity online or in DVD form by request.", "publicationTitle": "Astrophysical Journal Supplement Series", "publisher": "", "place": "", "date": "March 1, 2006", "volume": "163", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "145-159", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2006ApJS..163..145J", "accessDate": "2009-10-11T18:40:02Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Galaxy: Kinematics and Dynamics", "type": 1 }, { "tag": "ISM: Molecules", "type": 1 }, { "tag": "ISM: clouds", "type": 1 }, { "tag": "Radio Lines: General", "type": 1 }, { "tag": "Surveys", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:27:03Z", "dateModified": "2009-10-30T17:27:03Z" } }, { "key": "EP7W6NAP", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/EP7W6NAP", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/EP7W6NAP", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Kauffmann et al.", "parsedDate": "2008-09-01", "numChildren": 0 }, "data": { "key": "EP7W6NAP", "version": 1, "itemType": "journalArticle", "title": "MAMBO mapping of Spitzer c2d small clouds and cores", "creators": [ { "creatorType": "author", "firstName": "J.", "lastName": "Kauffmann" }, { "creatorType": "author", "firstName": "F.", "lastName": "Bertoldi" }, { "creatorType": "author", "firstName": "T. L.", "lastName": "Bourke" }, { "creatorType": "author", "firstName": "N. J.", "lastName": "Evans" }, { "creatorType": "author", "firstName": "C. W.", "lastName": "Lee" } ], "abstractNote": "Aims. To study the structure of nearby (<500 pc) dense starless and\nstar-forming cores with the particular goal to identify and understand\nevolutionary trends in core properties, and to explore the nature of\nVery Low Luminosity Objects (≤0.1 Lȯ; VeLLOs).\nMethods: Using the MAMBO bolometer array, we create maps unusually\nsensitive to faint (few mJy per beam) extended (≈5 arcmin) thermal\ndust continuum emission at 1.2 mm wavelength. Complementary information\non embedded stars is obtained from Spitzer, IRAS, and 2MASS. Results:\nOur maps are very rich in structure, and we characterize extended\nemission features (“subcores”) and compact intensity peaks\nin our data separately to pay attention to this complexity. We derive,\ne.g., sizes, masses, and aspect ratios for the subcores, as well as\ncolumn densities and related properties for the peaks. Combination with\narchival infrared data then enables the derivation of bolometric\nluminosities and temperatures, as well as envelope masses, for the young\nembedded stars. Conclusions: Starless and star-forming cores occupy\nthe same parameter space in many core properties; a picture of dense\ncore evolution in which any dense core begins to actively form stars\nonce it exceeds some fixed limit in, e.g., mass, density, or both, is\ninconsistent with our data. A concept of necessary conditions for star\nformation appears to provide a better description: dense cores\nfulfilling certain conditions can form stars, but they do not need to,\nrespectively have not done so yet. Comparison of various evolutionary\nindicators for young stellar objects in our sample (e.g., bolometric\ntemperatures) reveals inconsistencies between some of them, possibly\nsuggesting a revision of some of these indicators. Finally, we challenge\nthe notion that VeLLOs form in cores not expected to actively form\nstars, and we present a first systematic study revealing evidence for\nstructural differences between starless and candidate VeLLO cores.\n\nBased on observations with the IRAM 30-m telescope. Figure 1, Tables 3-5\nand Appendices A, B are only available in electronic form at\nhttp://www.aanda.org Data used for the maps (FITS files) are only\navailable in electronic form at the CDS via anonymous ftp to\ncdsarc.u-strasbg.fr (130.79.128.5), or via\nhttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/487/993", "publicationTitle": "Astronomy and Astrophysics", "publisher": "", "place": "", "date": "September 1, 2008", "volume": "487", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "993-1017", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2008A%26A...487..993K", "accessDate": "2009-10-11T23:41:14Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Extinction", "type": 1 }, { "tag": "ISM: clouds", "type": 1 }, { "tag": "ISM: dust", "type": 1 }, { "tag": "ISM: evolution", "type": 1 }, { "tag": "ISM: structure", "type": 1 }, { "tag": "Stars: Formation", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:12:34Z", "dateModified": "2009-10-30T17:12:34Z" } }, { "key": "EJZTP29N", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/EJZTP29N", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/EJZTP29N", "type": "text/html" }, "up": { "href": "https://api.zotero.org/groups/6905/items/TTIJ4ZNZ", "type": "application/json" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "numChildren": 0 }, "data": { "key": "EJZTP29N", "version": 1, "parentItem": "TTIJ4ZNZ", "itemType": "note", "note": "NO maser detected
", "tags": [], "relations": {}, "dateAdded": "2009-10-30T17:12:31Z", "dateModified": "2009-10-30T17:12:31Z" } }, { "key": "WGUWUHAN", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/WGUWUHAN", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/WGUWUHAN", "type": "text/html" }, "up": { "href": "https://api.zotero.org/groups/6905/items/H67EN5V4", "type": "application/json" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "numChildren": 0 }, "data": { "key": "WGUWUHAN", "version": 1, "parentItem": "H67EN5V4", "itemType": "note", "note": "IRAS 02533+6026 = LW Cas Nebula NOT INCLUDED
", "tags": [], "relations": {}, "dateAdded": "2009-10-30T17:12:31Z", "dateModified": "2009-10-30T17:12:31Z" } }, { "key": "JTUTJX2B", "version": 1, "library": { "type": "group", "id": 6905, "name": "Adam Ginsburg", "links": { "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg", "type": "text/html" } } }, "links": { "self": { "href": "https://api.zotero.org/groups/6905/items/JTUTJX2B", "type": "application/json" }, "alternate": { "href": "https://www.zotero.org/groups/adam_ginsburg/items/JTUTJX2B", "type": "text/html" } }, "meta": { "createdByUser": { "id": 70788, "username": "keflavich", "name": "", "links": { "alternate": { "href": "https://www.zotero.org/keflavich", "type": "text/html" } } }, "creatorSummary": "Helfand et al.", "parsedDate": "2006-05-01", "numChildren": 0 }, "data": { "key": "JTUTJX2B", "version": 1, "itemType": "journalArticle", "title": "MAGPIS: A Multi-Array Galactic Plane Imaging Survey", "creators": [ { "creatorType": "author", "firstName": "David J.", "lastName": "Helfand" }, { "creatorType": "author", "firstName": "Robert H.", "lastName": "Becker" }, { "creatorType": "author", "firstName": "Richard L.", "lastName": "White" }, { "creatorType": "author", "firstName": "Adam", "lastName": "Fallon" }, { "creatorType": "author", "firstName": "Sarah", "lastName": "Tuttle" } ], "abstractNote": "We present the Multi-Array Galactic Plane Imaging Survey (MAGPIS), which\nmaps portions of the first Galactic quadrant with an angular resolution,\nsensitivity, and dynamic range that surpass existing radio images of the\nMilky Way by more than an order of magnitude. The source detection\nthreshold at 20 cm is in the range 1-2 mJy over the 85% of the survey\nregion (5deg<32deg, |b|<0.8d) not\ncovered by bright extended emission; the angular resolution is ~6\". We\ncatalog over 3000 discrete sources (diameters mostly <30\") and\npresent an atlas of ~400 diffuse emission regions. New and archival data\nat 90 cm for the whole survey area are also presented. Comparison of our\ncatalogs and images with the Midcourse Space Experiment mid-infrared\ndata allows us to provide preliminary discrimination between thermal and\nnonthermal sources. We identify 49 high-probability supernova remnant\ncandidates, increasing by a factor of 7 the number of known remnants\nwith diameters smaller than 5' in the survey region; several are pulsar\nwind nebula candidates and/or very small diameter remnants\n(D<45''). We report the tentative identification of\nseveral hundred H II regions based on a comparison with the mid-IR\ndata; they range in size from unresolved ultracompact sources to large\ncomplexes of diffuse emission on scales of half a degree. In several of\nthe latter regions, cospatial nonthermal emission illustrates the\ninterplay between stellar death and birth. We comment briefly on plans\nfor follow-up observations and our extension of the survey; when\ncomplemented by data from ongoing X-ray and mid-IR observations, we\nexpect MAGPIS to provide an important contribution to our understanding\nof the birth and death of massive stars in the Milky Way.", "publicationTitle": "Astronomical Journal", "publisher": "", "place": "", "date": "May 1, 2006", "volume": "131", "issue": "", "section": "", "partNumber": "", "partTitle": "", "pages": "2525-2537", "series": "", "seriesTitle": "", "seriesText": "", "journalAbbreviation": "", "DOI": "", "citationKey": "", "url": "http://adsabs.harvard.edu/abs/2006AJ....131.2525H", "accessDate": "2009-06-23T15:38:52Z", "PMID": "", "PMCID": "", "ISSN": "", "archive": "", "archiveLocation": "", "shortTitle": "MAGPIS", "language": "", "libraryCatalog": "NASA ADS", "callNumber": "", "rights": "", "extra": "", "tags": [ { "tag": "Catalogs", "type": 1 }, { "tag": "Galaxy: General", "type": 1 }, { "tag": "ISM: H II Regions", "type": 1 }, { "tag": "ISM: Supernova Remnants", "type": 1 }, { "tag": "Radio Continuum: ISM", "type": 1 }, { "tag": "Surveys", "type": 1 } ], "collections": [], "relations": {}, "dateAdded": "2009-10-30T17:12:31Z", "dateModified": "2009-10-30T17:12:31Z" } } ]