J/MNRAS/463/1008ivo://CDS.VizieR/J/MNRAS/463/1008doi:10.26093/cds/vizier.74631008CDSWard-thompson D.Pattle K.Kirk J.M.Marsh K.Buckle J.Hatchell J.,Nutter D.J.Griffin M.J.Di Francesco J.Andre P.Beaulieu S.,Berry D.Broekhoven-Fiene H.Currie M.Fich M.Jenness T.,Johnstone D.Kirk H.Mottram J.Pineda J.Quinn C.Sadavoy S.,Salji C.Tisi S.Walker-Smith S.White G.Hill T.Konyves V.,Palmeirim P.Pezzuto S.2024-08-16T20:18:54Z2018-07-03T11:57:21ZCDS support team

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

cds-question@unistra.frmolecular-cloudsmillimeter-astronomyphotometrysubmillimeter-astronomyWe present a comparison of Submillimetre Common User Bolometer Array-2 (SCUBA-2) 850-{mu}m and Herschel 70-500-{mu}m observations of the L1495 filament in the Taurus Molecular Cloud with the goal of characterizing the SCUBA-2 Gould Belt Survey (GBS) data set. We identify and characterize starless cores in three data sets: SCUBA-2 850-{mu}m, Herschel 250-{mu}m, and Herschel 250-{mu}m spatially filtered to mimic the SCUBA-2 data. SCUBA-2 detects only the highest-surface-brightness sources, principally detecting protostellar sources and starless cores embedded in filaments, while Herschel is sensitive to most of the cloud structure, including extended low-surface-brightness emission. Herschel detects considerably more sources than SCUBA-2 even after spatial filtering. We investigate which properties of a starless core detected by Herschel determine its detectability by SCUBA-2, and find that they are the core's temperature and column density (for given dust properties). For similar-temperature cores, such as those seen in L1495, the surface brightnesses of the cores are determined by their column densities, with the highest-column-density cores being detected by SCUBA-2. For roughly spherical geometries, column density corresponds to volume density, and so SCUBA-2 selects the densest cores from a population at a given temperature. This selection effect, which we quantify as a function of distance, makes SCUBA-2 ideal for identifying those cores in Herschel catalogues that are closest to forming stars. Our results can now be used by anyone wishing to use the SCUBA-2 GBS data set.2016MNRAS.463.1008Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/463/1008CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/574/A104 : Dense cores in L1495/B213 complex (Tafalla+, 2015)J/MNRAS/459/342 : Dense cores in Taurus L1495 cloud (Marsh+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/463/1008https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/463/1008http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/463/1008https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/463/1008https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/463/1008http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/463/1008GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/463/1008/table12 (Sources found by the CSAR algorithm in its non-hierarchical mode in the 850-um SCUBA-2 data (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/463/1008/table12?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/463/1008/table12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/463/1008/table12?GETtext/xml+votable180.050000true64.666666728.38766670.005555555555555556Cone search capability for table J/MNRAS/463/1008/tablea13 (CSAR output for Herschel (tablea1) and filtered-Herschel (tablea3) sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/463/1008/tablea13?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/463/1008/tablea13?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/463/1008/tablea13?GETtext/xml+votable180.050000true64.668458328.38333330.005555555555555556Cone search capability for table J/MNRAS/463/1008/tablea24 (Derived properties of Herschel (tablea2) and filtered-Herschel (tablea4) sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/463/1008/tablea24?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/463/1008/tablea24?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/463/1008/tablea24?GETtext/xml+votable180.050000true64.669166728.38397220.005555555555555556Cone search capability for table J/MNRAS/463/1008/tableb1 (Sources detected in increased-noise filtered Herschel 250-um data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/463/1008/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/463/1008/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/463/1008/tableb1?GETtext/xml+votable180.050000true64.66887528.38394440.0055555555555555566/1157 1159 1168 11702.3390025583187276e-22 1.2415266230347566e-21https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/463/1008?format=asciiMillimeterdefaultJ/MNRAS/463/1008/table12Sources found by the CSAR algorithm in its non-hierarchical mode in the 850-um SCUBA-2 data (tables 1 and 2)TTemperatureKphys.temperaturefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource designation (SNN) (1)meta.id;meta.maincharRAJ2000Rigth ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFWHM1Sizearcsecphys.angSize.smajAxisfloatFWHM2Sizearcsecphys.angSize.sminAxisfloatAnglePosition angle (E of N)degpos.posAngfloatF160Total 160um fluxJyphot.flux.density;em.mm.1500-3000GHzfloatF250Total 250um fluxJyphot.flux.density;em.mm.750-1500GHzfloatF350Total 350um fluxJyphot.flux.density;em.mm.750-1500GHzfloatF500Total 500um fluxJyphot.flux.density;em.mm.400-750GHzfloatF850Total 850um fluxJyphot.flux.density;em.mm.200-400GHzfloatCtpHHerschel counterpart sourcemeta.idcharCtpFFiltered-Herschel counterpart sourcemeta.idchare_Trms uncertainty on temperatureKstat.errorfloatMassMasssolMassphys.massfloate_Massrms uncertainty on masssolMassstat.error;phys.massfloatDensDensity10000cm**3phys.densityfloate_Densrms uncertainty on density10000cm**3stat.errorfloatDeconvDeconvoled FWHMpcpos.distanceSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/463/1008/tablea13CSAR output for Herschel (tablea1) and filtered-Herschel (tablea3) sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource designation (HNNN for tablea1, FNN for tablea2)meta.id;meta.maincharRAJ2000Rigth ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFWHM1Sizearcsecphys.angSize.smajAxisfloatFWHM2Sizearcsecphys.angSize.sminAxisfloatAnglePosition angle (E of N)degpos.posAngfloatF160Total 160um fluxJyphot.flux.density;em.mm.1500-3000GHzfloatF250Total 250um fluxJyphot.flux.density;em.mm.750-1500GHzfloatF350Total 350um fluxJyphot.flux.density;em.mm.750-1500GHzfloatF500Total 500um fluxJyphot.flux.density;em.mm.400-750GHzfloatF850Extrapolate total 850um fluxJyphot.flux.density;em.mm.200-400GHzfloatCtp? Counterpart Marsh (tablea1, NNN) or Herschel (tablea2, HNN) source (1)meta.idcharTTemperatureKphys.temperaturefloate_Trms uncertainty on temperatureKstat.errorfloatMassMasssolMassphys.massfloate_Massrms uncertainty on masssolMassstat.error;phys.massfloatDensDensity10000cm**3phys.densityfloate_Densrms uncertainty on density10000cm**3stat.errorfloatDeconvDeconvoled FWHMpcpos.distanceSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/463/1008/tablea24Derived properties of Herschel (tablea2) and filtered-Herschel (tablea4) sourcesF160Total 160um fluxJyphot.flux.density;em.mm.1500-3000GHzfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource designation (HNNN for tablea1, FNN for tablea2)meta.id;meta.maincharRAJ2000Rigth ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFWHM1Sizearcsecphys.angSize.smajAxisfloatFWHM2Sizearcsecphys.angSize.sminAxisfloatAnglePosition angle (E of N)degpos.posAngfloatF250Total 250um fluxJyphot.flux.density;em.mm.750-1500GHzfloatF350Total 350um fluxJyphot.flux.density;em.mm.750-1500GHzfloatF500Total 500um fluxJyphot.flux.density;em.mm.400-750GHzfloatF850Extrapolate total 850um fluxJyphot.flux.density;em.mm.200-400GHzfloatCtp? Counterpart Marsh (tablea1, NNN) or Herschel (tablea2, HNN) source (1)meta.idcharTTemperatureKphys.temperaturefloate_Trms uncertainty on temperatureKstat.errorfloatMassMasssolMassphys.massfloate_Massrms uncertainty on masssolMassstat.error;phys.massfloatDensDensity10000cm**3phys.densityfloate_Densrms uncertainty on density10000cm**3stat.errorfloatDeconvDeconvoled FWHMpcpos.distanceJ/MNRAS/463/1008/tableb1Sources detected in increased-noise filtered Herschel 250-um datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource designation (Nnn)meta.id;meta.maincharRAJ2000Rigth ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFWHM1Sizearcsecphys.angSize.smajAxisfloatFWHM2Sizearcsecphys.angSize.sminAxisfloatAnglePosition angle (E of N)degpos.posAngfloatCtpSSCUBA-2 850um emission detected counterpart sourcemeta.idcharCtpFFiltered-Herschel counterpart sourcemeta.idchar