J/ApJ/712/797ivo://CDS.VizieR/J/ApJ/712/797doi:10.26093/cds/vizier.17120797CDSBillot N.Noriega-Crespo A.Carey S.Guieu S.Shenoy S.Paladini R.,Latter W.2017-06-28T06:58:35Z2012-04-26T12:18:09ZCDS support team

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

cds-question@unistra.frstellar-associationsinfrared-photometryyoung-stellar-objectsh-ii-regionsThe Vulpecula OB association, Vul OB1, is a region of active star formation located in the Galactic plane at 2.3kpc from the Sun. Previous studies suggest that sequential star formation is propagating along this 100pc long molecular complex. In this paper, we use Spitzer MIPSGAL and GLIMPSE data to reconstruct the star formation history of Vul OB1, and search for signatures of past triggering events. We make a census of young stellar objects (YSOs) in Vul OB1 based on IR color and magnitude criteria, and we rely on the properties and nature of these YSOs to trace recent episodes of massive star formation. We find 856 YSO candidates, and show that the evolutionary stage of the YSO population in Vul OB1 is rather homogeneous -ruling out the scenario of propagating star formation. We estimate the current star formation efficiency to be ~8%. We also report the discovery of a dozen pillar-like structures, which are confirmed to be sites of small scale triggered star formation.2010ApJ...712..797Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/712/797CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)J/A+A/537/A1 : Infrared fluxes of HII regions and PNe (Anderson+, 2012)J/A+A/498/147 : High mass protostellar objects physical parameters (Grave+,J/ApJ/658/1264 : IR-excess sources in GLIMPSE and MSX (Uzpen+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/712/797https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/712/797http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/712/797https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/712/797https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/712/797http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/712/797GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/712/797/table3 (Pillars identification, coordinates, and approximate size)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/712/797/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/712/797/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/712/797/table3?GETtext/xml+votable180.050000true296.3623.880.005555555555555556Cone search capability for table J/ApJ/712/797/sources (List of point sources observed in Vul OB1 association)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/712/797/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/712/797/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/712/797/sources?GETtext/xml+votable180.050000true296.76139223.8515060.0055555555555555565/3588 3589 6/12986 12987 14364 14365 14400 14402 144082.4016587514425055e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/712/797?format=asciiInfrareddefaultJ/ApJ/712/797/table3Pillars identification, coordinates, and approximate size[BNC2010]Pillar identification (VulPNN)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainamaj1Size for the long axisarcminphys.angSizeintamaj2? Size rangearcminphys.angSizeintnullablebmin1Size for the shorter axisarcminphys.angSize;srcfloatbmin2? Size rangearcminphys.angSize;srcintnullablePAPosition angle (given between the long axis of the pillar and the west axis, positive values are toward the north)degpos.posAngintSimbadSimbad column added by the CDSmeta.refcharJ/ApJ/712/797/sourcesList of point sources observed in Vul OB1 associationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSSTGLMCGLIMPSE source name (GLLL.llll+BB.bbbb)meta.id;meta.maincharGLONGalactic Longitudedegpos.galactic.lonGLATGalactic Latitudedegpos.galactic.latJmag? 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitudemagphot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullable[3.6]? Spitzer/IRAC 3.6 micron band magnitudemagphot.mag;em.IR.3-4umfloatnullable[4.5]? Spitzer/IRAC 4.5 micron band magnitudemagphot.mag;em.IR.4-8umfloatnullable[5.8]? Spitzer/IRAC 5.8 micron band magnitudemagphot.flux.density;em.IR.4-8umfloatnullable[8.0]? Spitzer/IRAC 8.0 micron band magnitudemagphot.flux.density;em.IR.8-15umfloatnullable[24]? Spitzer/MIPS 24 micron band magnitudemagphot.flux.density;em.IR.15-30umfloatnullable[70]? Spitzer/MIPS 70 micron band magnitudemagphot.flux.density;em.IR.30-60umfloatnullableSpIndex? Infrared spectral index (1)spect.index;em.IRfloatnullableClassSource classification (2)src.classchar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.refchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ra;meta.mainnullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.dec;meta.mainnullableindexed