J/A+A/601/A60ivo://CDS.VizieR/J/A+A/601/A60doi:10.26093/cds/vizier.36010060CDSCsengeri T.Bontemps S.Wyrowski F.Megeath S.T.Motte F.Sanna A.,Wienen M.Menten K.M.2019-05-02T09:38:57Z2017-05-02T08:01:48ZCDS support team

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

cds-question@unistra.frsurveysstellar-associationsThe progenitors of high-mass stars and clusters are still challenging to recognise. Only unbiased surveys, sensitive to compact regions of high dust column density, can unambiguously reveal such a small population of particularly massive and cold clumps. Here we use the ATLASGAL survey to identify a sample of candidate progenitors of massive clusters in the inner Galaxy. We characterise a flux limited sample of compact sources selected from the ATLASGAL survey. Sensitive mid-infrared data at 21-24um from the WISE and MIPSGAL surveys were explored to search for embedded objects, and complementary spectroscopic data were used to investigate their stability and their star formation activity. We identify an unbiased sample of infrared-quiet massive clumps in the Galaxy that potentially represent the earliest stages of massive cluster formation. An important fraction of this sample consists of sources that have not been studied in detail before. We first find that clumps hosting more evolved embedded objects and infrared-quiet clumps exhibit similar physical properties in terms of mass and size, suggesting that the sources are not only capable of forming high-mass stars, but likely also follow a single evolutionary track leading to the formation of massive clusters. The majority of the clumps are likely not in virial-equilibrium, suggesting collapse on the clump scale.2017A&A...601A..60Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/601/A60CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/570/A65 : ATLASGAL massive clumps CO depletion (Giannetti+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/601/A60https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/601/A60http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/601/A60https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/601/A60https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/601/A60http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/601/A60GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/601/A60/table4 (Flux limited ATLASGAL sources with distance estimate and the corresponding dust properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/601/A60/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/601/A60/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/601/A60/table4?GETtext/xml+votable180.050000true188.721645-61.6630440.0055555555555555565/10542 6/28808 28813 28824-28825 28827 28829-28830 28875 28912 28918-28919 29091 29094 29096-29097 29101 29103 29113 29116 29118 29461 29509-29511 29532-29533 29535 30218-30219 30241 30244-30245 30256 30259 30262-30263 30269 30312 30318-30319 30405 30420 30425 30595 30618 30622 30644 30694 41653 41655 41675 41677 41683 41770 41772 41777-41778 41780 41802 41804-41805 41812 41815 41817 41820 41824-41825 42158-42159 42172 42174 42207 42211-42212 42214-42215 42224 42226 42230 42376 42381 42383 42387 42390-42392 42396-42398 42436 42441 42444-42445 42447 42449 42451 42454-42457 42462 42496-42498 43013 430212.283270615984385e-22 2.283270615984385e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/601/A60?format=asciidefaultJ/A+A/601/A60/table4Flux limited ATLASGAL sources with distance estimate and the corresponding dust propertiesGLATGalactic latitudedegpos.galactic.latrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameATLASGAL catalogue name of the sourcemeta.id;meta.tablecharn_Name[x] Note on Name (1)meta.notecharGLONGalactic longitudedegpos.galactic.lonFnuPeak flux density at 870umJy/beamphot.flux.density;em.mm.200-400GHzfloatSnuIntegrated flux density at 870umJyphot.flux.density;em.mm.200-400GHzfloatmajFWHM major axisarcsecphys.angSizefloatminFWHM minor axisarcsecphys.angSizefloatPA[] FWHM position angledegpos.posAngintDistDistancekpcpos.distance;pos.heliocentricfloatDistminMinimum distancekpcpos.distance;pos.heliocentricfloatDistmaxMaximum distancekpcpos.distance;pos.heliocentricfloatr_DistReference for distance (2)meta.ref;pos.frameintMcorrTemperature corrected mass estimatesolMassphys.massintR9090% source radiuspcphys.size.radiusfloatSIGMAMass surface densityg.cm**-2phys.densityfloatnVolume averaged density10000cm**-3phys.densityfloatIRq[y/n] whether infrared quietmeta.codecharGMCGMC/SIRDC/MSX associationmeta.idcharEGOEGO associationmeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed