J/ApJ/896/79ivo://CDS.VizieR/J/ApJ/896/79doi:10.26093/cds/vizier.18960079CDSRobberto M.Gennaro M.Ubeira Gabellini M.G.Hillenbrand L.A.,Pacifici C.Ubeda L.Andersen M.Barman T.Bellini A.Da Rio N.,de Mink S.E.Lodato G.Manara C.F.Platais I.Pueyo L.Strampelli G.M.,Tan J.C.Testi L.2023-07-21T08:42:22Z2023-07-21T08:47:57ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsyoung-stellar-objectsinfrared-photometrytwo-color-diagramsstellar-masseseffective-temperatureextinctionIn order to obtain a complete census of the stellar and substellar population, down to a few M_Jup_ in the ~1Myr old Orion Nebula Cluster, we used the infrared channel of the Wide Field Camera 3 of the Hubble Space Telescope with the F139M and F130N filters. These bandpasses correspond to the 1.4{mu}m H2O absorption feature and an adjacent line-free continuum region. Out of 4504 detected sources, 3352 (about 75%) appear fainter than m130=14 (Vega mag) in the F130N filter, a brightness corresponding to the hydrogen- burning limit mass (M~0.072M_{sun}_) at ~1Myr. Of these, however, only 742 sources have a negative F130M-F139N color index, indicative of the presence of H2O vapor in absorption, and can therefore be classified as bona fide M and L dwarfs, with effective temperatures T<~2850K at an assumed 1Myr cluster age. On our color-magnitude diagram (CMD), this population of sources with H2O absorption appears clearly distinct from the larger background population of highly reddened stars and galaxies with positive F130M-F139N color index and can be traced down to the sensitivity limit of our survey, m130~21.5, corresponding to a 1Myr old ~3M_Jup_ planetary-mass object under about 2mag of visual extinction. Theoretical models of the BT-Settl family predicting substellar isochrones of 1, 2, and 3 Myr down to ~1M_Jup_ fail to reproduce the observed H2O color index at M<~20M_Jup_. We perform a Bayesian analysis to determine extinction, mass, and effective temperature of each substellar member of our sample, together with its membership probability.2020ApJ...896...79Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/896/79CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/111/846 : Orion HST survey (O'Dell+ 1996)J/ApJ/540/236 : KH photometry of Orion Nebula Cluster (Hillenbrand+, 2000)J/ApJ/541/977 : HST observations of low-mass stars in IC 348 (Najita+, 2000)J/ApJ/535/325 : Spectra of normal stars in the J-band (Wallace+ 2000)J/A+A/396/513 : Stellar Rotation in the Orion Nebula Cluster (Herbst+, 2002)J/ApJ/573/366 : Infrared photometry of Trapezium cluster (Muench+, 2002)J/ApJ/593/1093 : IC 348 membership (Luhman+, 2003)J/MNRAS/361/211 : JHK photometry of brown dwarfs in Orion (Lucas+, 2005)J/AJ/136/2136 : HST/ACS Atlas of Great Orion Nebula proplyds (Ricci+, 2008)J/ApJ/722/1092 : Optical photometry of the ONC. II. (Da Rio+, 2010)J/A+A/534/A10 : HST/NICMOS III imaging in ONC (Andersen+, 2011)J/A+A/533/A38 : Extinction map of OMC-1 (Scandariato+, 2011)J/ApJ/748/14 : ONC population data from WFI observations (Da Rio+, 2012)J/ApJ/755/154 : Mass accretion rates from HST in the ONC (Manara+, 2012)J/ApJ/753/149 : YSOVAR: six EBs in Orion (Morales-Calderon+, 2012)J/ApJ/744/6 : SONYC census of VLM objects in NGC1333 (Scholz+, 2012)J/AJ/146/85 : Spectral types of optical stars in ONC (Hillenbrand+, 2013)J/ApJS/207/10 : HST Treasury Program on the ONC (Robberto+, 2013)J/A+A/564/A29 : Optical and NIR photometry in Orion A (Bouy+, 2014)J/ApJ/782/8 : Spectroscopy of 104 objects in the ONC (Ingraham+, 2014)J/ApJ/818/59 : IN-SYNC. IV. YSOs in Orion A (Da Rio+, 2016)J/MNRAS/461/1734 : HAWK-I JHK photom. of the Orion Nebula Cloud (Drass+, 2016)J/ApJ/826/16 : ALMA and GeMS obs. of the OMC1 region (Eisner+, 2016)J/ApJS/225/10 : Kinematic analysis of M7-L8 dwarfs (Faherty+, 2016)J/AJ/154/256 : VLM stars and BDs in Upper Sco using Gaia DR1 (Cook+, 2017)J/ApJ/834/142 : Gould's Belt Distances Survey. II. OMC (Kounkel+, 2017)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/ApJ/870/32 : Kinematics in young star clusters & assoc. (Kuhn+, 2019)J/ApJ/881/79 : Flamingos-2 NIR photometry in NGC 2244 (Muzic+, 2019)J/ApJ/896/81 : HST survey of ONC in H2O abs. band. III. (Strampelli+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/896/79https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/896/79http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/896/79https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/896/79https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/896/79http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/896/79GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/896/79/table3 (Cross-matched ACS-VIS and WFC3-IR photometry of ONC sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/896/79/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/896/79/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/896/79/table3?GETtext/xml+votable180.050000true83.6163478-5.442952950.005555555555555556Cone search capability for table J/ApJ/896/79/table2 (WFC3-IR photometry of ONC sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/896/79/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/896/79/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/896/79/table2?GETtext/xml+votable180.050000true83.62638111-5.457796940.0055555555555555566/21438-21439 22804-228051.4021468880710216e-19 1.5364886602496635e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/896/79?format=asciiInfrareddefaultJ/ApJ/896/79/table3Cross-matched ACS-VIS and WFC3-IR photometry of ONC sourcesSeq[3/4504] Sequential running numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[83.55/84] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-5.7/-5.2] Declination (J2000)degpos.eq.dec;meta.mainF775W[13.1/81.2] HST/ACS F775W filter magnitude (2)magphot.mag;em.opt.Ifloate_F775W[0.002/84.2]? F775W uncertainty (2)magstat.errorfloatnullableF850LP[12.1/82.6] HST/ACS F850LP filter magnitude (2)magphot.mag;em.opt.Ifloate_F850LP[0.002/84.4]? F850LP uncertainty (2)magstat.errorfloatnullablemag130[5.87/22.7] HST/WFC3 F130N filter magnitudemagphot.mag;em.IR.Jfloate_mag130[0/1.1] mag130 uncertaintymagstat.errorfloatmag139[5.2/21.67] HST/WFC3 F139M filter magnitudemagphot.mag;em.IR.Jfloate_mag139[0/0.9] mag139 uncertaintymagstat.errorfloatcolor[-0.86/1.03] F130N-F139M color indexmagphot.color;em.IR;em.IRfloate_color[0/1.1] F130N-F139M color uncertaintymagstat.error;phot.colorfloatR13Display the data from Table 5 of Robberto+, 2013, J/ApJS/207/10 within 0.2"meta.ref.urlintnullablel_F775WUpper or lower limit flag on F775W (1)meta.code.errorcharl_F850LPUpper or lower limit flag on F850LP (1)meta.code.errorcharl_mag130Limit flag for saturated in F130N filtermeta.code.errorcharl_mag139Limit flag for saturated in F139M filtermeta.code.errorcharJ/ApJ/896/79/table4Estimated parameters of the ONC sampleSeq[1/4495] Sequential running numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlog(BF)[-0.5/2] Logarithm of the Bayes Factor (1)meta.code.memberfloatMstar[0/1.4] MasssolMassphys.massfloatTeff[671/4182] Effective TemperatureKphys.temperature.effectiveintAv[-73.9/30] Extinction estimated using distance from IR isochronemagpos.distancefloatJ/ApJ/896/79/table2WFC3-IR photometry of ONC sourcesSeq[1/4504] Sequential running numbermeta.id;meta.mainintprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOptACS photometry available for this source (link to Table 3)meta.ref.urlintnullableMmDerived parameters available for this source (link to Table 4)meta.ref.urlintnullableRAJ2000[83.55/84] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-5.72/-5.2] Declination (J2000)degpos.eq.dec;meta.mainXpix[209/12177] X pixel position on mosaicpixpos.cartesian.xdoubleYpix[852/14540] Y pixel position on mosaicpixpos.cartesian.ydoublel_mag130Limit flag for saturated in F130N filtermeta.code.errorcharmag130[5.88/23.27]? HST/WFC3 F130N filter magnitudemagphot.mag;em.IR.Jfloatnullablee_mag130[0/2.3] F130N filter magnitude uncertaintymagstat.errorfloatl_mag139Limit flag for saturated in F139M filtermeta.code.errorcharmag139[5.21/22.03]? HST/WFC3 F139M filter magnitudemagphot.mag;em.IR.Jfloatnullablee_mag139[0/1.5] F139M filter magnitude uncertaintymagstat.errorfloatcolor[-2.87/2.69]? F130N-F139M color indexmagphot.color;em.IR;em.IRfloatnullablee_color[0/2.5] F130N-F139M color uncertaintymagstat.error;phot.colorfloatNdet[0/6] Number of detectionsmeta.numberint