J/AJ/153/214ivo://CDS.VizieR/J/AJ/153/214doi:10.26093/cds/vizier.51530214CDSMercimek S.Myers P.C.Lee K.I.Sadavoy S.I.2018-07-20T08:37:11Z2018-05-30T07:46:08ZCDS support team

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

cds-question@unistra.frmolecular-cloudsyoung-stellar-objectsstellar-massesstellar-radiiWe present the results of our investigation of the star-forming potential in the Perseus star-forming complex. We build on previous starless core, protostellar core, and young stellar object (YSO) catalogs from Spitzer (3.6-70 {mu}m), Herschel (70-500 {mu}m), and SCUBA (850 {mu}m) observations in the literature. We place the cores and YSOs within seven star-forming clumps based on column densities greater than 5x10^21^/cm^2^. We calculate the mean density and free-fall time for 69 starless cores as ~5.55x10^-19^ g/cm^3^ and ~0.1 Myr, respectively, and we estimate the star formation rate for the near future as ~150 M_{sun}_/Myr. According to Bonnor-Ebert stability analysis, we find that majority of starless cores in Perseus are unstable. Broadly, these cores can collapse to form the next generation of stars. We found a relation between starless cores and YSOs, where the numbers of young protostars (Class 0 + Class I) are similar to the numbers of starless cores. This similarity, which shows a one-to-one relation, suggests that these starless cores may form the next generation of stars with approximately the same formation rate as the current generation, as identified by the Class 0 and Class I protostars. It follows that if such a relation between starless cores and any YSO stage exists, the SFR values of these two populations must be nearly constant. In brief, we propose that this one-to-one relation is an important factor in better understanding the star formation process within a cloud.2017AJ....153..214Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/153/214CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/440/151 : Observations at 850um in Perseus clusters (Hatchell+, 2005)J/ApJ/638/293 : 1.1mm sources in the Perseus Molecular Cloud (Enoch+, 2006)J/ApJ/646/1009 : Structures of dust in Perseus molecular cloud (Kirk+, 2006)J/A+A/468/1009 : Star formation in Perseus. II. (Hatchell+, 2007)J/ApJ/683/822 : Star formation in Ophiuchus and Perseus II.J/ApJ/684/1240 : Prestellar cores in Perseus, Serpens and OphiuchusJ/ApJ/696/298 : Dense cores in Perseus (Foster+, 2009)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/MNRAS/402/603 : Properties of SCUBA cores in Perseus mol. cloudJ/AJ/150/40 : The Spitzer c2d survey of clouds. XII. Perseus (Young+, 2015)J/ApJ/818/73 : Study of protostars in the Perseus molecular cloudhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/153/214https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/153/214http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/153/214https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/153/214https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/153/214http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/153/214GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/153/214/table6 (Class 0 in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table6?GETtext/xml+votable180.050000true51.34291730.7527780.005555555555555556Cone search capability for table J/AJ/153/214/table7 (Class I in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table7?GETtext/xml+votable180.050000true56.7726232.719030.005555555555555556Cone search capability for table J/AJ/153/214/table9 (Class II in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table9?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table9?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table9?GETtext/xml+votable180.050000true51.9093730.232940.005555555555555556Cone search capability for table J/AJ/153/214/table10 (Class III in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table10?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table10?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table10?GETtext/xml+votable180.050000true56.0381732.119250.005555555555555556Cone search capability for table J/AJ/153/214/table4 (Starless Cores in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table4?GETtext/xml+votable180.050000true51.355830.75220.005555555555555556Cone search capability for table J/AJ/153/214/table5 (Protostellar Cores in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table5?GETtext/xml+votable180.050000true51.400430.75390.005555555555555556Cone search capability for table J/AJ/153/214/table8 (Class Flat in Each Clump)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/214/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/214/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/214/table8?GETtext/xml+votable180.050000true51.9486230.201250.0055555555555555566/858 859 860 862 881 1538 1539 1542 1544https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/153/214?format=asciidefaultJ/AJ/153/214/table6Class 0 in Each ClumprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClump namemeta.id.parentcharField[1/12] Field identifiermeta.id;obs.fieldintNameSource namemeta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/153/214/table7Class I in Each ClumpSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClump namemeta.id.parentcharField[1/53] Field identifiermeta.id;obs.fieldintNameSpitzer source name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharClassSpitzer c2d (Evans et al. 2009, J/ApJS/181/321) classification (1)src.classcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJ/AJ/153/214/table9Class II in Each ClumpSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClump namemeta.id.parentcharField[1/53] Field identifiermeta.id;obs.fieldintNameSpitzer source name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharClassSpitzer c2d (Evans et al. 2009, J/ApJS/181/321) classification (1)src.classcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJ/AJ/153/214/table10Class III in Each ClumpSimbadNameSimbad column added by the CDSmeta.idcharClumpClump namemeta.id.parentcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintField[1/53] Field identifiermeta.id;obs.fieldintNameSpitzer source name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharClassSpitzer c2d (Evans et al. 2009, J/ApJS/181/321) classification (1)src.classcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJ/AJ/153/214/table4Starless Cores in Each ClumprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClump namemeta.id.parentcharField[1/26] Field identifiermeta.id;obs.fieldintNameCore name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainMass[0.051/24.529] MasssolMassphys.massfloatReff[0.0082/76] Effective radiuspcphys.size.radiusdoubleSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/153/214/table5Protostellar Cores in Each ClumpClumpClump namemeta.id.parentcharField[1/26] Field identifiermeta.id;obs.fieldintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCore name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainMass[0.051/24.529] MasssolMassphys.massfloatReff[0.0082/76] Effective radiuspcphys.size.radiusdoubleSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/153/214/table8Class Flat in Each ClumpSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClumpClump namemeta.id.parentcharField[1/53] Field identifiermeta.id;obs.fieldintNameSpitzer source name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharClassSpitzer c2d (Evans et al. 2009, J/ApJS/181/321) classification (1)src.classcharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.main