J/ApJ/905/119ivo://CDS.VizieR/J/ApJ/905/119doi:10.26093/cds/vizier.19050119CDSFischer W.J.Megeath S.T.Furlan E.Stutz A.M.Stanke T.Tobin J.J.,Osorio M.Manoj P.Di Francesco J.Allen L.E.Watson D.M.Wilson T.L.,Henning T.2022-08-26T13:25:30Z2022-08-08T08:16:40ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsinfrared-photometrymolecular-cloudsThe degree to which the properties of protostars are affected by environment remains an open question. To investigate this, we look at the Orion A and B molecular clouds, home to most of the protostars within 500pc. At ~400pc, Orion is close enough to distinguish individual protostars across a range of environments in terms of both the stellar and gas projected densities. As part of the Herschel Orion Protostar Survey (HOPS), we used the Photodetector Array Camera and Spectrometer to map 108 partially overlapping square fields with edge lengths of 5' or 8' and measure the 70 and 160{mu}m flux densities of 338 protostars within them. In this paper we examine how these flux densities and their ratio depend on evolutionary state and environment within the Orion complex. We show that Class 0 protostars occupy a region of the 70{mu}m flux density versus 160{mu}m/70{mu}m flux density ratio diagram that is distinct from their more evolved counterparts. We then present evidence that the Integral-Shaped Filament (ISF) and Orion B contain protostars with more massive inner envelopes than those in the more sparsely populated LDN 1641 region. This can be interpreted as evidence for increasing star formation rates in the ISF and Orion B or as a tendency for more massive inner envelopes to be inherited from denser birth environments. We also provide technical details about the mapmaking and photometric procedures used in the HOPS program.2020ApJ...905..119Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/905/119CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)VI/139 : Herschel Observation Log (Herschel Science Centre, 2013)J/A+A/289/101 : Orion OB1 association. I. (Brown+, 1994)J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)J/AJ/144/31 : Spitzer+2MASS phot. of protostar candidates (Kryukova+, 2012)J/AJ/144/192 : Spitzer survey of Orion A & B. I. YSO catalog (Megeath+, 2012)J/AJ/145/94 : Luminosities of protostars from Spitzer (Dunham+, 2013)J/ApJ/767/36 : APEX observations of HOPS protostars (Stutz+, 2013)J/AJ/148/11 : Infrared photometry in Cygnus-X (Kryukova+, 2014)J/ApJS/224/5 : Herschel Orion Protostar Survey (HOPS): SEDs (Furlan+, 2016)J/A+A/596/A26 : OMC-2 FIR 3 and FIR 4 [OI] maps (Gonzalez-Garcia+, 2016)J/ApJ/821/52 : NIR survey of Spitzer YSOs in Orion (Kounkel+, 2016)J/A+A/619/A106 : 3D shape of Orion A from Gaia DR2 (Grossschedl+, 2018)J/AJ/156/84 : APOGEE-2 survey of Orion Complex. II. (Kounkel+, 2018)J/A+A/633/A51 : Distances to molecular clouds in SFR (Zucker+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/905/119https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/905/119http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/905/119https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/905/119https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/905/119http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/905/119GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/905/119/table2 (HOPS sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/905/119/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/905/119/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/905/119/table2?GETtext/xml+votable180.050000true88.61711.62640.0055555555555555566/21403 21425 21427-21428 21430 21433 21435-21436 21438-21439 22804-22805 22854-22855 22861 22873 22876 235609.699422546568423e-22 3.243176138527326e-21https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/905/119?format=asciiInfrareddefaultJ/ApJ/905/119/table2HOPS sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHOPS[0/409] HOPS identifiermeta.id;meta.mainintn_HOPSDuplication flag on identifiers (1)meta.notecharRAJ2000[83.34/88.74]? Right Ascension (J2000)degpos.eq.ra;meta.mainnullableDEJ2000[-8.84/1.9]? Declination (J2000)degpos.eq.dec;meta.mainnullableRegionRegion within Orion A and Bmeta.notecharDateObsObservation date of group, UTtime.epoch;obsnullableObsID1? Herschel Observation identifiermeta.id;obsnullableObsID2? Second Herschel Observation identifiermeta.id;obsnullableGroup[0/320]? Group number (2)meta.idintnullableF70um[0.008/1001]? Herschel/PACS 70um flux densitiesJyphot.flux.density;em.IR.30-60umdoublenullablee_F70um[0.0016/50.3]? Uncertainty in F70umJystat.errordoublenullablef_F70umPhotometry type (3)meta.codecharF160um[0.03/1153]? Herschel/PACS 160um flux densitiesJyphot.flux.density;em.mm.1500-3000GHzdoublenullablee_F160um[0.0048/58.85]? Uncertainty in F160umJystat.errordoublenullablef_F160umPhotometry type (3)meta.codecharF16Display data from Furlan+, 2016, J/ApJS/224/5meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar