J/A+A/472/835ivo://CDS.VizieR/J/A+A/472/835doi:10.26093/cds/vizier.34720835CDSZavagno A.Pomares M.Deharveng L.Hosokawa T.Russeil D.Caplan J.2008-07-18T12:32:49Z2008-07-18T12:30:17ZCDS support team

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

cds-question@unistra.frh-ii-regionsearly-type-starsinfrared-photometryTo investigate the process of star formation triggered by the expansion of an HII region, we present a multi-wavelength analysis of the Galactic HII region RCW 120 and its surroundings. The collect and collapse model predicts that the layer of gas and dust accumulated between the ionization and shock fronts during the expansion of the HII region collapses and forms dense fragments, giving rise to potential sites of massive-star formation. The aim of our study is to look for such massive fragments and massive young stars on the borders of RCW 120. We mapped the RCW 120 region in the cold dust continuum emission at 1.2 mm to search for these fragments. We supplemented this study with the available near- (2MASS) and mid-IR (GLIMPSE) data to locate the IR sources observed towards this region and to analyse their properties. We then compared the observational results with the predictions of Hosokawa & Inutsuka's model (2005ApJ...623..917H; 2006ApJ...646..240H).2007A&A...472..835Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/472/835CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)http://www.astro.wisc.edu/glimpse/ : GLIMPSE Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/472/835https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/472/835http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/472/835https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/472/835https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/472/835http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/472/835GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/472/835/table2 (Magnitudes of IR sources observed towards RCW 120)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/472/835/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/472/835/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/472/835/table2?GETtext/xml+votable180.050000true258.05477889-38.513926940.0055555555555555566/424418.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/472/835?format=asciiInfrareddefaultJ/A+A/472/835/table2Magnitudes of IR sources observed towards RCW 120FieldField (1)obs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObjectObject designationmeta.id;meta.maincharn_Object[*] Note for Object name corrected (2)meta.notecharRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJmag? 2MASS PSC J magnitudemagphot.mag;em.IR.Jfloatnullableu_JmagUncertainty flag on Jmagmeta.code.errorcharHmag? 2MASS PSC H magnitudemagphot.mag;em.IR.Hfloatnullableu_HmagUncertainty flag on Hmagmeta.code.errorcharKsmag? 2MASS PSC Ks magnitudemagphot.mag;em.IR.Kfloatnullableu_KsmagUncertainty flag on Ksmagmeta.code.errorchar3.6um? GLIMPSE PSC 3.6um magnitudemagphot.mag;em.IR.3-4umfloatnullablen_3.6um[*] when magnitude not from GLIMPSE PSC (3)meta.notechar4.5um? GLIMPSE PSC 4.5um magnitudemagphot.mag;em.IR.4-8umfloatnullablen_4.5um[*] when magnitude not from GLIMPSE PSC (3)meta.notechar5.8um? GLIMPSE PSC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloatnullablen_5.8um[*] when magnitude not from GLIMPSE PSC (3)meta.notechar8.0um? GLIMPSE PSC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloatnullablen_8.0um[*] when magnitude not from GLIMPSE PSC (3)meta.notecharComComments about the nature of each source (Class I, Class II, giant)meta.notechar2MASS2MASS data (2MASS-PSC, Cat. II/246)meta.ref.urlchar