J/ApJ/668/1042ivo://CDS.VizieR/J/ApJ/668/1042doi:10.26093/cds/vizier.16681042CDSKirk H.Johnstone D.Tafalla M.2018-02-01T11:50:43Z2010-03-04T08:38:43ZCDS support team

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

cds-question@unistra.frmolecular-cloudsinfrared-sourcesmillimeter-astronomysubmillimeter-astronomyWe survey the kinematics of over 150 candidate (and potentially star-forming) dense cores in the Perseus molecular cloud with pointed N_2_H^+^(1-0) and simultaneous C^18^O(2-1) observations. Our detection rate of N_2_H^+^ is 62%, rising to 84% for SCUBA-selected targets. In agreement with previous observations, we find that the dense N_2_H^+^ targets tend to display nearly thermal line widths, particularly those that appear to be starless (using Spitzer data), indicating that turbulent support on the small scales of molecular clouds is minimal. For those N_2_H^+^ targets that have an associated SCUBA dense core, we find that their internal motions are more than sufficient to provide support against the gravitational force on the cores.2007ApJ...668.1042Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/668/1042CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/646/1009 : Structures of dust in Perseus molecular cloud (Kirk+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/668/1042https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/668/1042http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/668/1042https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/668/1042https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/668/1042http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/668/1042GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/668/1042/table1 (Target Properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/668/1042/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/668/1042/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/668/1042/table1?GETtext/xml+votable180.050000true57.12958332.6391670.005555555555555556Cone search capability for table J/ApJ/668/1042/table6 (Properties of the submillimeter cores identified in the Perseus SCUBA map with 3" pixels)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/668/1042/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/668/1042/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/668/1042/table6?GETtext/xml+votable180.050000true56.92291732.8629170.0055555555555555566/857 858 859 860 861 862 881 1538 1539 1542 1544https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/668/1042?format=asciiInfraredRadiodefaultJ/ApJ/668/1042/table1Target PropertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[KJT2007]Sequential numbermeta.recordintprimaryRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSel[PES] Selection method (1)meta.code;obscharCross?[Yes No] Were offset positions observed?meta.codecharSMM? SCUBA core reference number (see table6, [KJT2007] SMM NN in Simbad)meta.id.associntnullableFluxTotal SCUBA flux at 850um within the IRAM beam (2)Jyphot.flux.density;em.mm.200-400GHzfloat[JJK2007]? Spitzer protostar reference number (from Jogensen et al. 2007ApJ...656..293J)meta.bibintnullableEReg? Extinction Region number (from Paper I, Kirk et al., Cat. <J/ApJ/646/1009>) [KJD2006] EC NN in Simbadobs.fieldintnullableAVMean extinction within the IRAM beammagphys.absorption;stat.meanfloatJ/ApJ/668/1042/table3Parameters of spectral fitting for N_2_H^+^recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[KJT2007]Source identification number (1)meta.id.parentintoRAOffset in Right Ascension (2)pos.eq.ra;arith.diffintoDEOffset in Declination (2)pos.eq.dec;arith.diffintVel? CLASS derived centroid velocity (3)km/sphys.velocfloatnullablesigma? CLASS derived velocity dispersion (FWHM)km/sphys.veloc.dispersionfloatnullablee_sigma? Error in sigmam/sstat.errorintnullabletau? CLASS derived optical depthphys.absorption.opticalDepthfloatnullablee_tau? Error in Depthstat.errorfloatnullableBrmsCLASS derived baseline rmsKstat.stdev;instr.baselinefloatMrms? CLASS derived model rmsKstat.stdevfloatnullableInt? Integrated intensity (4)K.km/sphot.flux.density;em.radiofloatnullableGood[yes no] Was the fit judged to be good?meta.codecharJ/ApJ/668/1042/table4Parameters of Spectral Fitting for C^18^OoDEOffset in Declination (2)pos.eq.dec;arith.diffintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[KJT2007]Source identification number (1)meta.id.parentintoRAOffset in Right Ascension (2)pos.eq.ra;arith.diffintVel? CLASS derived centroid velocity (3)km/sphys.velocfloatnullablesigma? CLASS derived velocity dispersion (FWHM)km/sphys.veloc.dispersionfloatnullablee_sigma? Error in DelVm/sstat.errorintnullableTpeak? CLASS derived peak intensity (T^*^_A_ units)Kmeta.unit;phot.fluxfloatnullableInt? CLASS derived integrated intensityK.km/sphot.flux.density;em.radiofloatnullableBrmsCLASS derived baseline rmsKstat.stdev;instr.baselinefloatMrms? CLASS derived model rmsKstat.stdevfloatnullableGoodWas the fit judged to be good?meta.codecharJ/ApJ/668/1042/table6Properties of the submillimeter cores identified in the Perseus SCUBA map with 3" pixelsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSMMJName (HHMMSS+DDMMm), [KJT2007] SMM JHHMMmm+DDMMm in Simbadmeta.id;meta.maincharSMMSubmillimeter cores identified reference number, [KJT2007] SMM NN in Simbadmeta.idintprimaryRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainSp850Peak flux at 850um in Jy/beam (2)Jyphot.flux.density;em.mm.200-400GHzfloatS850Total flux at 850um (2)Jyphot.flux.density;em.mm.200-400GHzfloatReffEffective radius (2)arcsecphys.angSizefloatConcConcentration indexmeta.code;spect.indexfloatTBEBE temperature (3)Kphys.temperatureintlog(n0)Central number density (3)log(cm**-3)meta.idfloatPext/kExternal pressure (3)cm**3.K**-1phys.pressurefloatFit[Yes No] secure fit? (4)meta.codechar[JJK2007]? Associated protostar (5)meta.id.associntnullable