J/A+A/620/A163ivo://CDS.VizieR/J/A+A/620/A163doi:10.26093/cds/vizier.36200163CDSZhang G.-Y.Xu J.-L.Vasyunin A.I.Semenov D.A.Wang J.-J.Dib S.,Liu T.Liu S.-Y.Zhang C.-P.Liu X.-L.Wang K.Li D.Wu Z.-Z.,Yuan J.-H.Li D.-L.Gao Y.2020-09-01T13:38:32Z2018-12-14T08:16:12ZCDS support team

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

cds-question@unistra.frmolecular-cloudschemical-abundancesspectroscopyWe extracted 300 cores, of which 33 are protostellar and 267 are starless cores. About 51% (137 of 267) of the starless cores are prestellar cores. Three cores have the potential to evolve into high-mass stars. The prestellar core mass function (CMF) can be well fit by a log-normal form. The high-mass end of the prestellar CMF shows a power-law form with an index {alpha}=-0.9+/-0.1 that is shallower than that of the Galactic field stellar mass function. Combining the mass transformation efficiency ({epsilon}) from the prestellar core to the star of 15+/-1% and the core formation efficiency (CFE) of 5.5%, we suggest an overall star formation efficiency of about 1% in the CMC. In the single-pointing observations with the IRAM 30m telescope, we find that 6 cores show blue-skewed profile, while 4 cores show red-skewed profile. [HCO^+^]/[HNC] and [HCO^+^]/[N_2_H^+^] in protostellar cores are higher than those in prestellar cores; this can be used as chemical clocks. The best-fit chemical age of the cores with line observations is ~50000 years.2018A&A...620A.163Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/620/A163CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/764/133 : Auriga-California giant molecular cloud (Harvey+, 2013)J/ApJ/786/37 : Auriga-California molecular cloud (Broekhoven-Fiene+, 2014)J/A+A/606/A100 : YSOs in California Molecular Cloud (Lada+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/620/A163https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/620/A163http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/620/A163https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/620/A163https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/620/A163http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/620/A163GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/620/A163/cores (Parameters of 300 cores obtained from the Herschel H_2_ column density map (table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/620/A163/cores?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/620/A163/cores?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/620/A163/cores?GETtext/xml+votable180.050000true63.3200791739.300202780.005555555555555556Cone search capability for table J/A+A/620/A163/table1 (IRAM 30m observed positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/620/A163/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/620/A163/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/620/A163/table1?GETtext/xml+votable180.050000true62.672538.133055560.0055555555555555565/401 6/1231 1242-1243 1253 1261-1266 1272 1274https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/620/A163?format=asciidefaultJ/A+A/620/A163/hcnProperties of HCN (1-0) (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullableFWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullablee_depth? rms uncertainty on depthstat.error;phys.absorption.opticalDepthfloatnullableN? Column density (1)1e+14cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullableJ/A+A/620/A163/hcopProperties of HCO^+^ (1-0) (table 4)X? Abundancephys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullableFWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullablee_depth? rms uncertainty on depthstat.error;phys.absorption.opticalDepthfloatnullableN? Column density (1)1e+14cm**-2phys.columnDensityfloatnullableJ/A+A/620/A163/hncProperties of HNC (1-0) (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullableFWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullablee_depth? rms uncertainty on depthstat.error;phys.absorption.opticalDepthfloatnullableN? Column density (1)1e+14cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullableJ/A+A/620/A163/c18oProperties of C^18^O (1-0) (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullableFWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullableN? Column density1e+15cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullableJ/A+A/620/A163/13coProperties of ^13^CO (1-0) (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmbCorrected main-beam temperatureKphys.temperaturefloate_Tmbrms uncertainty on TmbKstat.errorfloatIIntegrated main-beam temperatureK.km/sspect.line.intensityfloate_Irms uncertainty on IK.km/sstat.errorfloatFWHMFull width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloate_FWHMrms uncertainty on FWHMkm/sstat.error;phys.angSizefloatVlsrLocal standard of rest velocitykm/sphys.veloc;pos.lsrfloate_Vlsrrms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatNColumn density1e+16cm**-2phys.columnDensityfloatXAbundancephys.abundfloatJ/A+A/620/A163/coresParameters of 300 cores obtained from the Herschel H_2_ column density map (table 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCoreCore number (CMCHerschel-NNN)meta.id;meta.maincharRAJ2000Right ascension (J2000.0) (1)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainMajAxisMajor axis of the ellipse (2)arcsecphys.angSizefloatMinAxisMinor axis of the ellipsearcsecphys.angSize;srcfloatPAPosition angledegpos.posAngfloatRadCore radius (3)pcphys.size.radiusfloatTdDust temperature (4)Kphys.temperaturefloatn(H2)Number density (5)cm**-3meta.number;phys.densityfloatMCore masssolMassphys.massfloatM(BE)Critical Bonnor-Ebert masssolMassphys.temperaturefloatTypeCore type (6)meta.codecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/620/A163/table1IRAM 30m observed positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharn_No[*] Note on No (1)meta.notecharRAJ2000Single-pointing observation right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Single-pointing observation declination (J2000.0)pos.eq.dec;meta.mainTdDust average temperature in one beam (29", IRAM 30m|86GHz)Kphys.temperature;instr.beamfloatSH2H_2_ average column density in one beam ({SIGMA}H_2_)1e+21cm**-2phys.columnDensity;instr.beamfloatR? Radiuspcphys.size.radiusfloatnullablen(H2)? Number density100000cm**-3meta.number;phys.densityfloatnullableM? Herschel core masssolMassphys.massfloatnullableMV? Virial masssolMassphys.massfloatnullableM(BE)? Critical Bonnor-Ebert masssolMassphys.temperaturefloatnullableTypeCore type (2)meta.codecharCoreCore number (CMCHerschel-NNN)meta.idcharJ/A+A/620/A163/h13copProperties of H^13^CO^+^(1-0) (table 4)FWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullableN? Column density1e+12cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullableJ/A+A/620/A163/hn13cProperties of HN^13^C (1-0) (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullableFWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullableN? Column density1e+12cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullableJ/A+A/620/A163/n2hpProperties of N_2_H^+^ (1-0) (table 4)FWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullablee_depth? rms uncertainty on depth (1)stat.error;phys.absorption.opticalDepthfloatnullableN? Column density (1)1e+13cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullableJ/A+A/620/A163/c2hProperties of C_2_H (1-0) (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoObservation number (CMC-NN)meta.id;meta.maincharTmb? Corrected main-beam temperatureKphys.temperaturefloatnullablee_Tmb? rms uncertainty on TmbKstat.errorfloatnullableI? Integrated main-beam temperatureK.km/sspect.line.intensityfloatnullablee_I? rms uncertainty on IK.km/sstat.errorfloatnullableFWHM? Full width at half-maximum of the Gaussian fitting profilekm/sspect.line.widthfloatnullablee_FWHM? rms uncertainty on FWHMkm/sstat.error;phys.angSizefloatnullableVlsr? Local standard of rest velocitykm/sphys.veloc;pos.lsrfloatnullablee_Vlsr? rms uncertainty on Vlsrkm/sstat.error;phys.veloc;pos.lsrfloatnullabledepth? Optical depth (1)phys.absorption.opticalDepthfloatnullablee_depth? rms uncertainty on depthstat.error;phys.absorption.opticalDepthfloatnullableN? Column density (1)1e+14cm**-2phys.columnDensityfloatnullableX? Abundancephys.abundfloatnullable