J/A+A/518/L73ivo://CDS.VizieR/J/A+A/518/L73doi:10.26093/cds/vizier.35189073CDSSewilo M.Indebetouw R.Carlson L.R.Whitney B.Chen C.-H.R.,Meixner M.Robitaille T.van Loon J.T.Oliveira J.M.Churchwell E.,Simon J.D.Hony S.Panuzzo P.Sauvage M.Roman-Duval J.Gordon K.,Engelbracht C.Misselt K.Okumura K.Beck T.Hora J.Woods P.M.2010-12-01T14:45:03Z2010-10-05T16:45:03ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsprotostarsyoung-stellar-objectsinfrared-photometrymillimeter-astronomyphotometrysubmillimeter-astronomyWe demonstrate the unique capabilities of Herschel to study very young luminous extragalactic young stellar objects (YSOs) by analyzing a central strip of the Large Magellanic Cloud obtained through the HERITAGE Science Demonstration Program. We combine PACS 100 and 160, and SPIRE 250, 350, and 500um photometry with 2MASS (1.25-2.17um) and Spitzer IRAC and MIPS (3.6-70um) to construct complete spectral energy distributions (SEDs) of compact sources. From these, we identify 207 candidate embedded YSOs in the observed region, ~40% never-before identified. We discuss their position in far-infrared color-magnitude space, comparing with previously studied, spectroscopically confirmed YSOs and maser emission. All have red colors indicating massive cool envelopes and great youth. We analyze four example YSOs, determining their physical properties by fitting their SEDs with radiative transfer models. Fitting full SEDs including the Herschel data requires us to increase the size and mass of envelopes included in the models. This implies higher accretion rates (greater or equal to 10^-4^M_{sun}_/yr), in agreement with previous outflow studies of high-mass protostars. Our results show that Herschel provides reliable longwave SEDs of large samples of high-mass YSOs; discovers the youngest YSOs whose SEDs peak in Herschel bands; and constrains the physical properties and evolutionary stages of YSOs more precisely than was previously possible.2010A&A...518L..73Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/518/L73CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/184/172 : High- and intermediate-mass YSOs in the LMC (Gruendl+, 2009)J/ApJ/699/150 : Spectral analysis of massive YSOs in LMC (Seal+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/518/L73https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/518/L73http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/518/L73https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/518/L73https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/518/L73http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/518/L73GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/518/L73/table1 (Spitzer and Herschel fluxes for YSOs discussed in Sect. 5)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/518/L73/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/518/L73/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/518/L73/table1?GETtext/xml+votable180.050000true78.3237083-69.37361110.0055555555555555566/330983.2031150387835462e-22 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/518/L73?format=asciiInfraredRadiodefaultJ/A+A/518/L73/table1Spitzer and Herschel fluxes for YSOs discussed in Sect. 5recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (YSO-N)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainl_FJLimit flag on FJmeta.code.errorcharFJ2MASS J band fluxmJyphot.flux.density;em.IR.Jfloate_FJ? rms uncertainty in FJmJystat.errorfloatnullablel_FHLimit flag on FHmeta.code.errorcharFH2MASS H band fluxmJyphot.flux.density;em.IR.Hfloate_FH? rms uncertainty in FHmJystat.errorfloatnullablel_FKsLimit flag on FKsmeta.code.errorcharFKs2MASS Ks band fluxmJyphot.mag;em.IR.Kfloate_FKs? rms uncertainty in FKsmJystat.errorfloatnullableF3.6Spitzer/IRAC 3.6 micron band fluxmJyphot.mag;em.IR.3-4umfloate_F3.6rms uncertainty in F3.6ummJystat.errorfloatF4.5Spitzer/IRAC 4.5 micron band fluxmJyphot.mag;em.IR.4-8umfloate_F4.5rms uncertainty in F4.5ummJystat.errorfloatl_F5.8Limit flag on F5.8ummeta.code.errorcharF5.8Spitzer/IRAC 5.8 micron band fluxmJyphot.flux.density;em.IR.4-8uminte_F5.8? rms uncertainty in F5.8ummJystat.errorintnullablel_F8.0Limit flag on F8.0ummeta.code.errorcharF8.0Spitzer/IRAC 8.0 micron band fluxmJyphot.flux.density;em.IR.8-15uminte_F8.0? rms uncertainty in F8.0ummJystat.errorintnullablel_F24Limit flag on F24ummeta.code.errorcharF24Spitzer/MIPS 24 micron band fluxmJyphot.flux.density;em.IR.15-30uminte_F24? rms uncertainty in F24ummJystat.errorintnullableF70Spitzer/MIPS 70 micron band fluxmJyphot.flux.density;em.IR.30-60uminte_F70rms uncertainty in F70ummJystat.errorintF100Herschel/PACS 100 micron band fluxmJyphot.flux.density;em.IR.60-100uminte_F100rms uncertainty in F100ummJystat.errorintF160Herschel/PACS 160 micron band fluxmJyphot.flux.density;em.mm.1500-3000GHzinte_F160rms uncertainty in F160ummJystat.errorintF250Herschel/SPIRE 250 micron band fluxmJyphot.flux.density;em.mm.750-1500GHzinte_F250rms uncertainty in F250ummJystat.errorintF350Herschel/SPIRE 350 micron band fluxmJyphot.flux.density;em.mm.750-1500GHzinte_F350rms uncertainty in F350ummJystat.errorintl_F500Limit flag on F500ummeta.code.errorcharF500Herschel/SPIRE 500 micron band fluxmJyphot.flux;em.IRinte_F500? rms uncertainty in F500ummJystat.errorintnullableONameOther namesmeta.idcharr_ONameReference for OName (1)meta.ref;pos.framechar