J/ApJ/863/13ivo://CDS.VizieR/J/ApJ/863/13doi:10.26093/cds/vizier.18630013CDSGrant S.L.Espaillat C.C.Megeath S.T.Calvet N.Fischer W.J.,Miller C.J.Kim K.H.Stutz A.M.Ribas A.Robinson C.E.2019-09-02T08:21:41Z2019-08-29T13:32:46ZCDS support team

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

cds-question@unistra.frinfrared-photometryyoung-stellar-objectsstellar-spectral-typesWe analyze Herschel Space Observatory observations of 104 young stellar objects with protoplanetary disks in the ~1.5Myr star-forming region Lynds 1641 (L1641) within the Orion A Molecular Cloud. We present spectral energy distributions from the optical to the far-infrared including new photometry from the Herschel Photodetector Array Camera and Spectrometer at 70{mu}m. Our sample, taken as part of the Herschel Orion Protostar Survey, contains 24 transitional disks, 8 of which we identify for the first time in this work. We analyze the full disks (FDs) with irradiated accretion disk models to infer dust settling properties. Using forward modeling to reproduce the observed n_Ks-[70]_ index for the FD sample, we find the observed disk indices are consistent with models that have depletion of dust in the upper layers of the disk relative to the midplane, indicating significant dust settling. We perform the same analysis on FDs in Taurus with Herschel data and find that Taurus is slightly more evolved, although both samples show signs of dust settling. These results add to the growing literature that significant dust evolution can occur in disks by ~1.5Myr.2018ApJ...863...13Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/863/13CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)J/A+A/337/403 : Low-mass stars evolutionary models (Baraffe+ 1998)J/ApJ/602/816 : Chamaeleon I star-forming region census (Luhman, 2004)J/A+A/489/1409 : IR photometry and spectroscopy in L1641N (Galfalk+, 2008)J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/A+A/504/461 : YSOs in L1630N and L1641 (Fang+, 2009)J/ApJ/703/1964 : Spectra of three nearby star-forming regions (Furlan+, 2009)J/ApJ/693/L81 : Extinction in star-forming regions (McClure, 2009)J/ApJ/712/925 : Transition circumstellar disks in Ophiuchus (Cieza+, 2010)J/ApJS/186/111 : Spitzer observations of Taurus members (Luhman+, 2010)J/ApJ/752/59 : Low-mass population in L1641 (Hsu+, 2012)J/AJ/144/192 : Spitzer survey of Orion A & B. I. YSO catalog (Megeath+, 2012)J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013)J/ApJS/207/5 : YSOs in LDN 1641 with Hectochelle spectra (Fang+, 2013)J/ApJ/764/114 : BVRI photometry of stars in Orion A (Hsu+, 2013)J/ApJ/769/149 : IR spectroscopy in Orion A: transitional disks (Kim+, 2013)J/ApJ/768/99 : X-ray survey of YSOs in Orion A (Pillitteri+, 2013)J/ApJ/767/36 : APEX observations of HOPS protostars (Stutz+, 2013)J/AJ/148/11 : Infrared photometry in Cygnus-X (Kryukova+, 2014)J/A+A/581/A30 : Herschel maps of {rho} Oph (Rebollido+, 2015)J/ApJS/224/5 : Herschel Orion Protostar Survey (HOPS): SEDs (Furlan+, 2016)J/ApJS/226/8 : Spitzer/IRS survey of Class II objects in Orion A (Kim+, 2016)J/ApJ/821/52 : NIR survey of Spitzer YSOs in Orion (Kounkel+, 2016)J/ApJ/825/91 : Refined classification for Orion A protostars (Lewis+, 2016)J/ApJ/834/142 : Gould's Belt Distances Survey (GOBELINS). II. (Kounkel+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/863/13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/863/13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/863/13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/863/13https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/863/13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/863/13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/863/13/ysos (Heschel fluxes and stellar properties (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/863/13/ysos?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/863/13/ysos?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/863/13/ysos?GETtext/xml+votable180.050000true85.676667-8.8038330.005555555555555556Cone search capability for table J/ApJ/863/13/flagged (Herschel fluxes and stellar properties for flagged objects (tables 7 and 8))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/863/13/flagged?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/863/13/flagged?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/863/13/flagged?GETtext/xml+votable180.050000true85.75375-8.7384440.0055555555555555566/21403 21425 21428 21430 21435 21436 214382.43238375192e-21 3.243176138527326e-21https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/863/13?format=asciiInfrareddefaultJ/ApJ/863/13/ysosHeschel fluxes and stellar properties (tables 1 and 2)SpTLiterature spectral typesrc.spTypecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTD?Transitional disk candidates (link to Table 3)meta.ref.urlcharID[198/1086] Running sequence number (G1)meta.id;meta.mainintprimaryRAJ2000[5] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[6/8] Degree of Declination (J2000)pos.eq.dec;meta.mainF70[0.01/10.1] Herschel/PACS 70um fluxJyphot.flux;em.IR.60-100umfloate_F70[0.001/0.6] Uncertainty in F70Jystat.errorfloatr_SpTReference for SpT (1)meta.ref;pos.framecharAv[0/34.5]? Visual extinctionmagphys.absorption;em.opt.Vfloatnullabler_AvReference (or source) for Av (1)meta.ref;pos.framecharLum[0.01/59.4]? LuminositysolLumphys.luminosityfloatnullabler_LumReference for Lum (1)meta.ref;pos.framecharl_logMdotlimit flag for logMdotmeta.code.errorcharlogMdot[-10.7/-5.6]? log mass accretion ratelog(solMass.yr**-1)arith.rate;phys.massfloatnullabler_logMdotReference for logMdot (1)meta.ref;pos.framecharLCatDisplay data from Hsu+, 2012, J/ApJ/752/59 and 2013, J/ApJ/764/114 ; Kim+, 2016, J/ApJS/226/8 ; Fang+, 2013, J/ApJS/207/5 and 2009, J/A+A/504/461 within 1"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/863/13/flaggedHerschel fluxes and stellar properties for flagged objects (tables 7 and 8)r_SpTReference for SpT (1)meta.ref;pos.framecharr_LumReference for Lum (1)meta.ref;pos.framechare_F70[0.001/0.6] Uncertainty in F70Jystat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[198/1086] Running sequence number (G1)meta.id;meta.mainintRAJ2000[5] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[6/8] Degree of Declination (J2000)pos.eq.dec;meta.mainF70[0.01/10.1] Herschel/PACS 70um fluxJyphot.flux;em.IR.60-100umfloatFlagFlux Flag(s) only for Table 7 (G2)meta.code.errorcharSpTLiterature spectral typesrc.spTypecharAv[0/34.5]? Visual extinctionmagphys.absorption;em.opt.Vfloatnullabler_AvReference (or source) for Av (1)meta.ref;pos.framecharLum[0.01/59.4]? LuminositysolLumphys.luminosityfloatnullablel_logMdotlimit flag for logMdotmeta.code.errorcharlogMdot[-10.7/-5.6]? log mass accretion ratelog(solMass.yr**-1)arith.rate;phys.massfloatnullabler_logMdotReference for logMdot (1)meta.ref;pos.framecharLCatDisplay data from Hsu+, 2012, J/ApJ/752/59 and 2013, J/ApJ/764/114 ; Kim+, 2016, J/ApJS/226/8 ; Fang+, 2013, J/ApJS/207/5 and 2009, J/A+A/504/461 within 1"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/863/13/table3Transitional disk candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[198/1086] Running sequence number (G1)meta.id;meta.mainintF09[0/1] Transitional Disk Candidate, Fang+ (2009, J/A+A/504/461, 2013, J/ApJS/207/5)meta.codeintMe10[0/1] Transitional Disk Candidate, Merin+ (2010ApJ...718.1200M)meta.codeintC10[0/1] Transitional Disk Candidate, Cieza+ (2010, J/ApJ/712/925)meta.codeintMu10[0/1] Transitional Disk Candidate, Muzerolle+ (2010ApJ...708.1107M)meta.codeintThisWork[0/1] Transitional Disk Candidate, This workmeta.codeintJ/ApJ/863/13/table4L1641 median SEDrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[0.5/70] Wavelength in micronumem.wlfloatSED[-11.4/-9.8] log median flux density, {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)phot.flux.density;em.IRfloatb_SED[-11.7/-9.9] log lower quartile, {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)meta.unit;arith.zp;stat.minfloatB_SED[-11.3/-9.7] log upper quartile {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)meta.unit;arith.zp;stat.maxfloatJ/ApJ/863/13/table5L1641 median SED for full disksrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[0.5/70] Wavelength in micronumem.wlfloatSED[-11.4/-9.8] log median flux density, {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)phot.flux.density;em.IRfloatb_SED[-11.7/-9.9] log lower quartile, {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)meta.unit;arith.zp;stat.minfloatB_SED[-11.3/-9.7] log upper quartile {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)meta.unit;arith.zp;stat.maxfloatJ/ApJ/863/13/table6L1641 median SED for transitional disksrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[0.5/70] Wavelength in micronumem.wlfloatSED[-11.4/-9.8] log median flux density, {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)phot.flux.density;em.IRfloatb_SED[-11.7/-9.9] log lower quartile, {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)meta.unit;arith.zp;stat.minfloatB_SED[-11.3/-9.7] log upper quartile {lambda}F{lambda} in erg/s/cm2 unitslog(mW.m**-2)meta.unit;arith.zp;stat.maxfloat