J/ApJ/912/156ivo://CDS.VizieR/J/ApJ/912/156doi:10.26093/cds/vizier.19120156CDSKong S.Arce H.G.Shirley Y.Glasgow C.2023-01-10T08:31:22Z2022-12-02T09:12:09ZCDS support team

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

cds-question@unistra.frmolecular-cloudsgalaxy-kinematicsyoung-stellar-objectsradio-spectroscopyA sample of 1.3mm continuum cores in the Dragon infrared dark cloud (also known as G28.37+0.07 or G28.34+0.06) is analyzed statistically. Based on their association with molecular outflows, the sample is divided into protostellar and starless cores. Statistical tests suggest that the protostellar cores are more massive than the starless cores, even after temperature and opacity biases are accounted for. We suggest that the mass difference indicates core mass growth since their formation. The mass growth implies that massive star formation may not have to start with massive prestellar cores, depending on the core mass growth rate. Its impact on the relation between core mass function and stellar initial mass function is to be further explored.2021ApJ...912..156Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/912/156CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/291/943 : Protostellar cores (Ossenkopf+, 1994)J/MNRAS/450/1926 : Infall motions in massive star-forming regions (He+, 2015)J/ApJ/867/94 : ALMA 1.3mm flux measurements of C1-S core (Kong+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/912/156https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/912/156http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/912/156https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/912/156https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/912/156http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/912/156GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/912/156/tablea1 (Core kinematics)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/912/156/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/912/156/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/912/156/tablea1?GETtext/xml+votable180.050000true280.69353-4.070840.0055555555555555566/30256 30258https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/912/156?format=asciiMillimeterdefaultJ/ApJ/912/156/tablea1Core kinematicsSpSpectra figure for this coremeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCore[1/280] Core numbermeta.id;meta.mainintRAJ2000[280.68/280.74] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-4.08/-4.01] Declination (J2000)degpos.eq.dec;meta.mainDetDetection (1)meta.noteLineAdopted fitting linemeta.id;spect.linecharo_LineNumber of components to check in Line (2)meta.numbercharVc[75.6/83.1]? Averaged LSR velocity of projected corekm/sspect.dopplerVeloc;pos.lsrfloatnullablee_Vc[0.02/0.4]? Uncertainty in Vckm/sstat.error;pos.cartesian.yfloatnullablesigmac[0.16/1.31]? Average dispersion of projected corekm/sinstr.dispersion;stat.meanfloatnullablee_sigmac[0.02/0.4]? Uncertainty in sigmackm/sstat.errorfloatnullableVb[75.7/83.1]? Average LSR velocity within the beamkm/sspect.dopplerVeloc;pos.lsr;instr.beamfloatnullablee_Vb[0.02/0.3]? Uncertainty in Vbkm/sstat.errorfloatnullablesigmab[0.1/1.2]? Average dispersion within the beamkm/sinstr.dispersion;instr.beamfloatnullablee_sigmab[0.02/0.3]? Uncertainty in sigmabkm/sstat.errorfloatnullablesigma[0.2/1.4]? Total velocity dispersion (3)km/sphys.veloc.dispersionfloatnullablee_sigma[0.02/0.4]? Uncertainty in sigmakm/sstat.errorfloatnullablesigmaNH3[0.44/1.17] Total velocity dispersion from NH_3_ dispersionkm/sphys.veloc.dispersionfloate_sigmaNH3[0/0.03] Uncertainty in sigmaNH3km/sstat.errorfloat