J/MNRAS/432/2182ivo://CDS.VizieR/J/MNRAS/432/2182doi:10.26093/cds/vizier.74322182CDSFoyle K.Natale G.Wilson C.D.Popescu C.C.Baes M.Bendo G.J.,Boquien M.Boselli A.Cooray A.Cormier D.De Looze I.Fischera J.,Karczewski O.L.Lebouteiller V.Madden S.Pereira-Santaella M.,Smith M.W.L.Spinoglio L.Tuffs R.J.2024-07-21T20:15:05Z2015-10-23T15:14:12ZCDS support team

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

cds-question@unistra.frgalaxiesinfrared-sourcesinfrared-photometryWe investigate star formation and dust heating in the compact far-infrared (FIR) bright sources detected in the Herschel maps of M83. We use the source extraction code GETSOURCES to detect and extract sources in the FIR, as well as their photometry in the mid-infrared and H{alpha}. By performing infrared spectral energy distribution fitting and applying an H{alpha}-based star formation rate (SFR) calibration, we derive the dust masses and temperatures, SFRs, gas masses and star formation efficiencies (SFEs). The detected sources lie exclusively on the spiral arms and represent giant molecular associations, with gas masses and sizes of 106-108M{sun} and 200-300pc, respectively. The inferred parameters show little to no radial dependence and there is only a weak correlation between the SFRs and gas masses, which suggests that more massive clouds are less efficient at forming stars. Dust heating is mainly due to local star formation. However, although the sources are not optically thick, the total intrinsic young stellar population luminosity can almost completely account for the dust luminosity. This suggests that other radiation sources also contribute to the dust heating and approximately compensate for the unabsorbed fraction of UV light.2013MNRAS.432.2182Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/432/2182CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/578/A100 : Infrared massive stellar content of M83 (Williams+, 2015)J/AJ/136/479 : IRAC observations of M83 extended UV disk (Dong+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/432/2182https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/432/2182http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/432/2182https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/432/2182https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/432/2182http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/432/2182GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/432/2182/tabled1 (High-background measurement source fluxes and positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/432/2182/tabled1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/432/2182/tabled1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/432/2182/tabled1?GETtext/xml+votable180.050000true204.27867-29.8267250.005555555555555556Cone search capability for table J/MNRAS/432/2182/tabled3 (Low-background measurement source fluxes and positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/432/2182/tabled3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/432/2182/tabled3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/432/2182/tabled3?GETtext/xml+votable180.050000true204.27867-29.8267250.0055555555555555566/438814.62055710559558e-22 2.9851966310207673e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/432/2182?format=asciiInfrareddefaultJ/MNRAS/432/2182/tabled1High-background measurement source fluxes and positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainF8umSpitzer/IRAC flux at 8ummJyphot.flux.density;em.IR.8-15uminte_F8umrms uncertainty on F8ummJystat.errorfloatF24umFlux at 24ummJyphot.flux.density;em.IR.15-30umfloate_F24umrms uncertainty on F24ummJystat.errorfloatF70umHerschel/PACS flux at 70ummJyphot.flux.density;em.IR.30-60umfloate_F70umrms uncertainty on F70ummJystat.errorfloatF160umHerschel/PACS flux at 160ummJyphot.flux.density;em.mm.1500-3000GHzfloate_F160umrms uncertainty on F160ummJystat.errorfloatF250umHerschel/SPIRE flux at 250ummJyphot.flux.density;em.mm.750-1500GHzfloate_F250umrms uncertainty on F250ummJystat.errorfloatF350um? Herschel/SPIRE flux at 350ummJyphot.flux.density;em.mm.750-1500GHzfloatnullablee_F350um? rms uncertainty on F350ummJystat.errorfloatnullableF(Ha)? H{alpha} flux from SINGG (Meurer et al., 2006, Cat. J/ApJS/165/307)uJyphot.flux;em.line.Halphafloatnullablee_F(Ha)? rms uncertainty on FHauJystat.errorfloatnullableJ/MNRAS/432/2182/tabled2HB measurement SED fitting parametersSeqSequential numbermeta.recordintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintchiUVIntensity of the UV radiation fieldstat.fit.paramfloate_chiUVrms uncertainty on chiUVstat.errorfloatchicolOptical-to-UV ratiostat.fit.paramfloate_chicolrms uncertainty on chicolstat.errorfloatTdustDust temperatureKstat.fit.paramfloate_Tdustrms uncertainty on TdustKstat.errorfloatMdustDust mass of the diffuse component10000solMassstat.fit.paramfloate_Mdustrms uncertainty on Tdust10000solMassstat.errorfloatF24Fraction of 24um emission provided by the PDR componentphot.flux.density;em.IR.15-30umfloate_F24rms uncertainty on F24stat.errorfloatLdustDust luminosity1e+33Wphys.luminosityfloate_Ldustrms uncertainty on Ldust1e+33Wstat.errorfloatchi2FITFitted chi^2^ valuestat.fit.chi2;stat.value;meta.modelledfloatJ/MNRAS/432/2182/tabled3Low-background measurement source fluxes and positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainF8umSpitzer/IRAC flux at 8ummJyphot.flux.density;em.IR.8-15uminte_F8umrms uncertainty on F8ummJystat.errorfloatF24umFlux at 24ummJyphot.flux.density;em.IR.15-30umfloate_F24umrms uncertainty on F24ummJystat.errorfloatF70umHerschel/PACS flux at 70ummJyphot.flux.density;em.IR.30-60umfloate_F70umrms uncertainty on F70ummJystat.errorfloatF160umHerschel/PACS flux at 160ummJyphot.flux.density;em.mm.1500-3000GHzfloate_F160umrms uncertainty on F160ummJystat.errorfloatF250umHerschel/SPIRE flux at 250ummJyphot.flux.density;em.mm.750-1500GHzfloate_F250umrms uncertainty on F250ummJystat.errorfloatF350um? Herschel/SPIRE flux at 350ummJyphot.flux.density;em.mm.750-1500GHzfloatnullablee_F350um? rms uncertainty on F350ummJystat.errorfloatnullableF(Ha)? H{alpha} flux from SINGG (Meurer et al., 2006, Cat. J/ApJS/165/307)uJyphot.flux;em.line.Halphafloatnullablee_F(Ha)? rms uncertainty on FHauJystat.errorfloatnullableJ/MNRAS/432/2182/tabled4LB measurement SED fitting parameterse_Tdustrms uncertainty on TdustKstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.recordintchiUVIntensity of the UV radiation fieldstat.fit.paramfloate_chiUVrms uncertainty on chiUVstat.errorfloatchicolOptical-to-UV ratiostat.fit.paramfloate_chicolrms uncertainty on chicolstat.errorfloatTdustDust temperatureKstat.fit.paramfloatMdustDust mass of the diffuse component10000solMassstat.fit.paramfloate_Mdustrms uncertainty on Tdust10000solMassstat.errorfloatF24Fraction of 24um emission provided by the PDR componentphot.flux.density;em.IR.15-30umfloate_F24rms uncertainty on F24stat.errorfloatLdustDust luminosity1e+33Wphys.luminosityfloate_Ldustrms uncertainty on Ldust1e+33Wstat.errorfloatchi2FITFitted chi^2^ valuestat.fit.chi2;stat.value;meta.modelledfloat