J/ApJS/179/249ivo://CDS.VizieR/J/ApJS/179/249doi:10.26093/cds/vizier.21790249CDSDunham M.M.Crapsi A.Evans II N.J.Bourke T.L.Huard T.L.Myers P.C.,Kauffmann J.2017-06-01T08:52:21Z2009-10-26T08:11:07ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsinfrared-sourcesastronomical-object-identificationWe present the results of a search for all embedded protostars with internal luminosities <=1.0L_{sun}_ in the full sample of nearby, low-mass star-forming regions surveyed by the Spitzer Space Telescope Legacy Project "From Molecular Cores to Planet Forming Disks" (c2d). We present a set of selection criteria used to identify candidates from the Spitzer data and examine complementary data to decide whether each candidate is truly an embedded protostar. Between 75% and 85% of cores classified as starless prior to being observed by Spitzer remain starless to our luminosity sensitivity; the remaining 15%-25% harbor low-luminosity, embedded protostars. We compile complete spectral energy distributions for all 50 objects and calculate standard evolutionary signatures (L_bol_, T_bol_, and L_bol_/L_smm_) and argue that these objects are inconsistent with the simplest picture of star formation, wherein mass accretes from the core onto the protostar at a constant rate.2008ApJS..179..249Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/179/249CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/663/1149 : MIPS and IRAC Serpens YSO population (Harvey+, 2007)J/AJ/133/1560 : Spitzer c2d small clouds and cores (Wu+, 2007)J/A+A/487/993 : MAMBO Mapping of c2d Clouds and Cores (Kauffmann+, 2008)J/ApJ/676/427 : MIPS and IRAC Chamaeleon II PMS data (Alcala+, 2008)J/ApJS/177/551 : Spitzer c2d survey of Lupus dark clouds (Merin+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/179/249https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/179/249http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/179/249https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/179/249https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/179/249http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/179/249GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/179/249/objects (Candidate low-luminosity embedded objects in cores, Perseus, Chamaeleon II, Lupus, Ophiuchus and Serpens)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/179/249/objects?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/179/249/objects?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/179/249/objects?GETtext/xml+votable180.050000true65.48715.49611110.0055555555555555565/214 215 10684 6/854 855 881 1052 1075 1537 1538 1539 1542 1544 15426 15630 15816 15964 15965 16191 16196 16197 23533 23704 29112 29193 29367 30344 30361 30363 30366 30388 30621 30623 32089 37747 39141 39361 39370 39396 41126 41127 41132 41133 41134 41518 41822 42596 42598 42599 42611 42612 42614 42620 42621 42705 42727 42733 42744 42745 42746 42777 42963 42966 42969 42970 42971 42972 42973 42980 42981 42989 42992 42993 42994 43153https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/179/249?format=asciiInfrareddefaultJ/ApJS/179/249/objectsCandidate low-luminosity embedded objects in cores, Perseus, Chamaeleon II, Lupus, Ophiuchus and SerpensrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTSimbad column added by the CDSmeta.id;meta.datasetcharGroupGroup number (G1)src.classchar[DCE2008]Source numbermeta.id;meta.mainintprimaryn_[DCE2008]Simbad column added by the CDSmeta.notecharSSTc2dSpitzer source name (JHHMMSS.ss+DDMMSS.s) (2)meta.idcharRegionRegion designation (3)meta.id.parentcharDist? Distance to the core region for table 3 (4)pcpos.angDistanceintnullablee_Dist? Error in Distpcstat.errorintnullableRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainLIrIntegrated luminosity (5)solLumphys.luminosity;em.IRfloatf_LIr[e] No 70um data (6)meta.codecharSSimbad column added by the CDSmeta.ref.urlcharSEDSimbad column added by the CDSmeta.ref.urlchardIRASDistance to the nearest IRAS sourcearcsecpos.angDistancefloatIRASNearest IRAS source name (IRAS HHMMm-DDMM)meta.idcharSimbadSimbad column added by the CDSmeta.ref.urlcharMIPS3Status of 160um observations (4)instr.setupcharSNameSimbad name (5)meta.idcharJ/ApJS/179/249/sedSEDs (Spectral Energy Distributions) of groups 1-3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[DCE2008]Source numbermeta.id;meta.mainintlambdaWavelength {lambda}umem.wlfloatFluxFlux density at {lambda}mJyphot.flux.density;em.IRdoublee_Flux? The 1{sigma} uncertainty in FluxmJystat.error;phot.fluxdoublenullableAperAperture (1)arcsecphys.angSize;instr.fovcharRefReference in refs.dat filemeta.ref;pos.frame;meta.filecharEvolEvolutionary indicator commentsmeta.noteJ/ApJS/179/249/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintBibCodeBibcodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentmeta.notechar