J/other/AcApS/18ivo://CDS.VizieR/J/other/AcApS/18.302CDSSun Y.-C.Sun J.2014-12-05T13:53:22Z2014-03-02T09:01:01ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frh-ii-regionsinfrared-sourcesA systematic comparison between molecular clouds in different evolutionary stages and processes of star formation is made over the range of 8{deg} to 38{deg} in Galactic longitude and -1{deg} to +1{deg} in Galactic latitude by using the Massachusetts-Stony Brook Survey data of ^12^CO in the Galactic plane (HPFW=47") and the IRAS Infrared Sky Survey image data (1.5' per pixel). This region is divided into thirty subregions. Then, the space distribution of CO(1-0) emission and the corresponding infrared intensity at 60ymis obtained for each subregion, and the contours of infrared color temperatures and optical depths of molecular cloud complexes in the corresponding regions are calculated and derived. Moreover, the catalogs of the IRAS infrared point sources and HII regions are used. Thus, molecular clouds in different evolutionary stages are identified and divided into four groups ranging from young clouds to evolved clouds, and their main characteristics and relations to the processes of star formation are analysed. The Galatic-longitude distributions of ultracompact HII regions and candidate protostars as well as the ratio between HII region-molecular cloud and candidate protostar-molecular cloud associations are analysed statistically. The results indicate that star formation activities are currently still going on in our Galaxy.1998AcApS..18..302Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/AcApS/18.302CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/125 : IRAS catalogue of Point Sources, Version 2.0 (IPAC 1986)VII/20 : Catalogue of HII Regions (Sharpless 1959)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/AcApS/18.302https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/AcApS/18.302http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/AcApS/18.302https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/AcApS/18.302https://vizier.iucaa.in/viz-bin/votable?-source=J/other/AcApS/18.302http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/AcApS/18.302GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/AcApS/18.302/table1 (Ultracompact HII regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/AcApS/18.302/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/AcApS/18.302/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/AcApS/18.302/table1?GETtext/xml+votable180.050000true270.7271-21.79830.005555555555555556Cone search capability for table J/other/AcApS/18.302/table2 (120 protostar candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/AcApS/18.302/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/other/AcApS/18.302/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/AcApS/18.302/table2?GETtext/xml+votable180.050000true271.1789-22.11280.0055555555555555565/7278 7376 7383 7564 7578 7579 6/28917 28918 28919 29090 29091 29094 29096 29097 29100 29101 29103 29116 29118 29119 29460 29461 29508 29510 29511 29517 29522 29523 29526 29528 29529 30218 30219 30223 30240 30244 30245 30262 30268 30269 30306 30330 30405 30416 30417 30419 30420 30422https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/AcApS/18.302?format=asciiInfrareddefaultJ/other/AcApS/18.302/table1Ultracompact HII regionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject designation (HHMMd+DDMM)meta.id;meta.maincharm_Name[A] Multiplicity index on Namemeta.code.multipchar_RABcompPosition (from name) (right ascension part)degpos.eq.ra;meta.main_DEBcompPosition (from name) (declination part)degpos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/other/AcApS/18.302/table2120 protostar candidates_RABcompPosition (from name) (right ascension part)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject designation (HHMMd+DDMM)meta.id;meta.maincharm_Name[A] Multiplicity index on Namemeta.code.multipchar_DEBcompPosition (from name) (declination part)degpos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed