J/ApJS/247/29ivo://CDS.VizieR/J/ApJS/247/29doi:10.26093/cds/vizier.22470029CDSZhang C.Wu Y.Liu X.Qin S.-L.Liu T.Yuan J.Li D.Meng F.,Zhang T.Tang M.Yuan L.Zhou C.Esimbek J.Zhou Y.Chen P.Hu R.2026-08-03T07:24:43Z2020-06-25T08:56:49ZCDS support team

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

cds-question@unistra.frinterstellar-mediummillimeter-astronomysubmillimeter-astronomymolecular-cloudsco-line-emissionstar-forming-regionsgalaxy-kinematicsSixty-five Planck Galactic cold clumps (PGCCs) from the first quadrant (IQuad) and 39 from the anticenter direction region (ACent) were observed in ^12^CO, ^13^CO, and C^18^O J=1-0 lines using the 13.7m telescope of the Purple Mountain Observatory. All the targets were detected in all three lines, except for 12 IQuad and 8 ACent PGCCs without C^18^O detection. Seventy-six and 49 velocity components were obtained in IQuad and ACent respectively; 146 cores were extracted from 76 IQuad clumps and 100 cores from 49 ACent clumps. The average Tex of IQuad cores and ACent cores is 12.4K and 12.1K, respectively. The average line widths of ^13^CO of IQuad cores and ACent cores are 1.55km/s and 1.77km/s, respectively. Among the detected cores, 24 in IQuad and 13 in ACent have asymmetric line profiles. The small blue excesses, ~0.03 in IQuad and 0.01 in ACent, indicate that star formation is not active in these PGCC cores. Power-law fittings of the core mass function to the high-mass end give indices of -0.57 in IQuad and -1.02 in ACent, which are flatter than the slope of the initial mass function given by Salpeter. The large turnover masses of 28M_{sun}_ for IQuad cores and 77M_{sun}_ for ACent cores suggest low star formation efficiencies in PGCCs. The correlation between virial mass and gas mass indicates that most PGCC cores in both regions are not likely pressure-confined.2020ApJS..247...29Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/247/29CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/125 : IRAS cat. of Point Sources, Version 2.0 (IPAC 1986)VIII/39 : Composite CO Survey of the Milky Way (Dame+ 1987)II/249 : WHAM Northern Sky Survey, V-1.1 (Haffner+, 2003)J/ApJ/428/693 : Rosette Nebula & Maddalena Cloud structures (Williams+ 1994)J/ApJS/125/161 : A database of dense cores mapped in ammonia (Jijina+, 1999)J/A+A/462/L17 : Dense cores in interstellar molecular clouds (Alves+, 2007)J/MNRAS/374/1413 : SCUBA survey of Orion (Nutter+, 2007)J/MNRAS/391/869 : A mapping survey of massive CO cores (Guan+, 2008)J/A+A/487/993 : MAMBO Mapping of c2d Clouds and Cores (Kauffmann+, 2008)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/ApJ/691/1560 : Dense core survey in the Orion B cloud (Ikeda+, 2009)J/ApJ/712/797 : YSOs in Vul OB1 association (Billot+, 2010)J/ApJS/202/4 : Planck cold clumps survey in the Orion complex (Liu+, 2012)J/ApJ/756/76 : Planck cold dust clumps CO survey (Wu+, 2012)J/ApJS/209/37 : Planck cold clumps in ^12^CO, ^13^CO & C^18^O (Meng+, 2013)J/ApJ/794/124 : NGC 2264 Spitzer sources (Rapson+, 2014)J/A+A/584/A93 : Galactic cold cores. V. Dust opacity (Juvela+, 2015)J/A+A/584/A91 : Dense cores in Aquila from Herschel (Konyves+, 2015)J/MNRAS/458/3027 : Young and embedded clusters in Cygnus-X (Maia+, 2016)J/MNRAS/458/3479 : SVM selection of WISE YSO Candidates (Marton+, 2016)J/A+A/594/A28 : Planck Cat. of Galactic cold clumps (PGCC) (Planck+, 2016)J/MNRAS/463/1008 : LDN 1495 SCUBA-2 and Herschel data (Ward-Thompson+, 2016)J/ApJ/820/37 : HCO+ & HCN obs. toward PGCCs (Yuan+, 2016)J/ApJS/224/43 : Planck cold clumps & cores in 2nd quadrant (Zhang+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/247/29https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/247/29http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/247/29https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/247/29https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/247/29http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/247/29GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/247/29/table1 (Planck Galactic cold clumps (PGCCs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/247/29/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/247/29/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/247/29/table1?GETtext/xml+votable180.050000true269.7632083-14.69076940.0055555555555555566/12902 12960 12985 12991 13011 13048 13939 13981 14005 14014 14031 14052-14053 14057 14347 14350 14369 14371-14372 14595 14601 14618 15362 15379-15380 15416 15420 15466 15540-15541 15555 15564 15578 15585 15588-15589 20941 20952 21637 21645 22089 22113 22140 22232 23557 23600 23625 23644 23646 23669 23770 23795 23802 23807 23810 23842 23970 24156 24305 24307-24308 24353 24378 24424-24425 24427 24450 29455 29466 29498 29884 30272 30288 30368 30421 30561 30574-30575 30584 30663 32011 32083https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/247/29?format=asciiMillimeterRadiodefaultJ/ApJS/247/29/table1Planck Galactic cold clumps (PGCCs)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQuadQuadrant ("IQuad": first Galactic quadrant or "ACent": Galactic anti-center direction region)obs.fieldcharClumpClumpmeta.id;meta.maincharprimaryNcNumber of cores for this clumpmeta.numberintnullableGLON[13.86/226.81] Galactic longitudedegpos.galactic.lonGLAT[-9.7/10.81] Galactic latitudedegpos.galactic.latdoubleRAJ2000[5/22] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainRAB[5/22] Hour of Right Ascension (B1950)pos.eq.raDEBDegree of Declination (B1950)pos.eq.decRegionSub-region (1)obs.fieldcharOBOB association (2)meta.id.assoccharAssocCore associated with objects (link to Table 9)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJS/247/29/coresLine parameters (Table 2), derived parameters (Table 4) and emission region parameters (Table 6) at the core centere_dV-12CO[0.01/0.4] Uncertainty in dV-12COkm/sstat.errorfloatTb-13CO[0.6/9.4] ^13^CO brightness temperatureKspect.line.intensity;spect.linefloate_Tb-13CO[0.05/1.3] Uncertainty in Tb-13COKstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClumpmeta.id.parentcharm_Clump[a-d] Component identifier in Clumpmeta.code.multipcharCore[C1-5] Core identifier in Clumpmeta.id.part;meta.maincharDist[0.2/9.2]? Distancekpcpos.distance;pos.heliocentricfloatnullableTb-12CO[3.9/19.1] ^12^CO brightness temperatureKspect.line.intensity;spect.linefloate_Tb-12CO[0.07/2.8] Uncertainty in Tb-12COKstat.errorfloatVlsr-12CO[-7.5/46.2] LSR (centroid) velocity, ^12^COkm/sphys.velocfloate_Vlsr-12CO[0.01/0.2] Uncertainty in Vlsr-12COkm/sstat.error;phys.velocfloatdV-12CO[0.6/6.5] Line width, FWHM, ^12^COkm/sspect.line.widthfloatVlsr-13CO[-7.3/46.3] LSR (centroid) velocity, ^13^COkm/sphys.velocfloate_Vlsr-13CO[0/0.2] Uncertainty in Vlsr-13COkm/sstat.error;phys.velocfloatdV-13CO[0.4/5.2] Line width, FWHM, ^13^COkm/sspect.line.widthfloate_dV-13CO[0.01/0.4] Uncertainty in dV-13COkm/sstat.errorfloatTb-C18O[0.3/3.4]? C^18^O brightness temperatureKphys.temperaturefloatnullablee_Tb-C18O[0.06/6.6]? Uncertainty in Tb-C18OKstat.errorfloatnullableVlsr-C18O[-5.6/29.1]? LSR (centroid) velocity, C^18^Okm/sphys.veloc;pos.lsrfloatnullablee_Vlsr-C18O[0.01/0.3]? Uncertainty in Vlsr-C18Okm/sstat.error;phys.velocfloatnullabledV-C18O[0.17/4]? Line width, FWHM, C^18^Okm/sspect.line.widthfloatnullablee_dV-C18O[0.02/0.8]? Uncertainty in dV-C18Okm/sstat.errorfloatnullableV-peak[-7.3/48] Peak velocity, ^12^COkm/sphys.velocfloatProfileProfile (1)meta.codecharTex[7.2/22.5] Excitation temperatureKphys.atmol.excitationfloate_Tex[1/1.1] Uncertainty in TexKstat.errorfloattau-13CO[0.07/3.8] optical depth, ^13^COphys.absorption.opticalDepthfloate_tau-13CO[0.01/3.2] Uncertainty in tau-13COstat.errorfloatNH2[0.5/68.7] H_2_ column density1e+21cm**-1phys.columnDensityfloate_NH2[0.2/26.7] Uncertainty in NH21e+21cm**-1stat.error;phys.columnDensityfloatsigma-NT[0.1/2.2] Non-thermal velocity dispersion, {sigma}_NT_km/sphys.veloc.dispersionfloate_sigma-NT[0.01/0.07] Uncertainty in sigma-NTkm/sstat.errorfloatsigma-Th[0.1/0.3] Thermal velocity dispersion, {sigma}_Th_km/sphys.veloc.dispersionfloate_sigma-Th[0.01] Uncertainty in sigma-Thkm/sstat.errorfloatsigma-3D[0.4/4] Three-dimensional velocity dispersion, {sigma}_3D_km/spos.distance;phys.veloc.dispersionfloate_sigma-3D[0.01/0.2] Uncertainty in sigma-3Dkm/sstat.errorfloatoRA[-396/361] Offset, Right Ascensionarcsecpos.eq.ra;arith.diffintoDE[-385/355] Offset, Declinationarcsecpos.eq.dec;arith.diffintamaj[99/435] semi-major axis, Gaussian fitarcsecphys.angSize;srcintbmin[60/300] semi-minor axis, Gaussian fitarcsecphys.angSize.sminAxis;meta.modelledintRad[0.04/2.94] Radiuspcphys.size.radiusfloatn3[0.34/21.65] Volume particle density1000cm**-3phys.densityfloatMcore[0.1/7612.8] Core masssolMassphys.massfloatMvir[3/3300] Virial masssolMassphys.massintMJeans[4/3121] Jeans masssolMassphys.massintaVir[0.16/52.51] Virial parameter, {alpha}phys.mass;arith.ratiofloatJ/ApJS/247/29/table9*Fifty-eight cores associated with objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintQuadQuadrant ("IQuad": first Galactic quadrant or "ACent": Galactic anti-center direction region)obs.fieldcharClumpClumpmeta.id.parentcharCore[C1-5] Core identifier in Clumpmeta.id.part;meta.maincharm_Clump[abd] Component identifier in Clumpmeta.code.multipcharI/IIClass I/II YSO candidatemeta.codeintIIIClass III YSO candidatemeta.codeintIRASIRAS point sourcemeta.codeint