J/ApJ/684/654ivo://CDS.VizieR/J/ApJ/684/654doi:10.26093/cds/vizier.16840654CDSLuhman K.L.Muench A.A.2017-09-27T05:55:32Z2010-12-22T14:14:00ZCDS support team

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

cds-question@unistra.frinfrared-photometryyoung-stellar-objectsspectroscopyline-intensitiesWe have used images obtained with the Infrared Array Camera and the Multiband Imaging Photometer on board the Spitzer Space Telescope to search for low-mass stars and brown dwarfs with circumstellar disks in the Chamaeleon I star-forming region. Through optical spectroscopy of sources with red colors in these data, we have identified seven new disk-bearing members of the cluster. Three of these objects are probably brown dwarfs, according to their spectral types (M8, M8.5, M8-L0). Three of the other new members may have edge-on disks, based on the shapes of their infrared spectral energy distributions. One of the possible edge-on systems has a steeply rising slope from 4.5 to 24um, indicating that it could be a Class I source (star+disk+envelope) rather than a Class II source (star+disk). If so, then it would be one of the least massive known Class I protostars (M5.75, M~0.1M_{sun}_).2008ApJ...684..654Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/684/654CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/675/1375 : IRAC/MIPS photometry in Cha I (Luhman+, 2008)J/ApJS/173/104 : Stellar population in Chamaeleon I (Luhman, 2007)J/A+A/416/555 : Brown Dwarfs in ChaI Dark Cloud (Lopez-Marti+ 2004)J/ApJ/593/1093 : IC 348 membership (Luhman+, 2003)J/AJ/121/974 : JHK photometry in Cha I (Gomez+, 2001)J/AJ/121/2673 : 3{mu}m survey of the Chamaeleon I dark cloud (Kenyon+, 2001)J/ApJ/525/466 : Young low-mass stars and brown dwarfs in IC 348 (Luhman+,https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/684/654https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/684/654http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/684/654https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/684/654https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/684/654http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/684/654GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/684/654/new (New members of Chamaeleon I (table 1 and 2 of paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/684/654/new?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/684/654/new?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/684/654/new?GETtext/xml+votable180.050000true163.41575-77.20938890.005555555555555556Cone search capability for table J/ApJ/684/654/table3 (Spitzer photometry for known members of Chamaeleon I)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/684/654/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/684/654/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/684/654/table3?GETtext/xml+votable180.050000true163.41575-77.20941670.0055555555555555566/36956 36957 36958 371296.772611666688002e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/684/654?format=asciiOpticalInfrareddefaultJ/ApJ/684/654/newNew members of Chamaeleon I (table 1 and 2 of paper)SEDClSED class (8)src.classcharl_EW[>~ ] Limit flag on EWmeta.code.error;spect.line.eqWidthcharu_Lbol[~] Uncertainty flag on Lbolmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2M/ChaName (JHHMMSSss+DDMMSSs)meta.id;meta.maincharf_2M/Cha[f-i] Flag on Name (1)meta.codecharSpTMK spectral typesrc.spTypechare_SpT? Uncertainty on SpT (2)stat.errorintnullableu_Teff[~] Uncertainty flag on Teffmeta.code.error;phys.temperature.effectivecharTeffEffective temperature (3)Kphys.temperature.effectiveintu_AJ[~] Uncertainty flag on A_J_meta.code.errorcharAJJ-band extinctionphys.absorption;em.IR.JfloatLbolBolometric luminositysolLumphys.luminosityfloatf_Lbol[e] Luminosity uncertain (4)meta.codecharMmMembership evidence (5)meta.code.membercharJmag? 2MASS J-band magnitude (6)magphot.mag;em.IR.Jfloatnullablee_Jmag? Jmag uncertainty (6)magstat.error;phot.mag;em.IR.JfloatnullableHmag? 2MASS H-band magnitude (6)magphot.mag;em.IR.Hfloatnullablee_Hmag? Hmag uncertainty (6)magstat.error;phot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks-band magnitude (6)magphot.mag;em.IR.Kfloatnullablee_Ksmag? Ksmag uncertainty (6)magstat.error;phot.mag;em.IR.KfloatnullableEWEquivalent widths of the H{alpha} emission line0.1nmspect.line.eqWidth;em.line.Halphafloate_EW? Uncertainty on EW0.1nmstat.error;spect.line.eqWidthfloatnullablealpha1? {alpha}(2-8um) (7)spect.indexfloatnullablealpha2? {alpha}(2-24um) (7)spect.indexfloatnullablealpha3{alpha}(3.6-8um) (7)spect.indexfloatalpha4? {alpha}(3.6-24um) (7)spect.indexfloatnullableLAA08Display the Luhman et al. 2008 data (Cat. J/ApJ/675/1375)meta.ref.urlchar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.id;meta.maincharSimbadSimbad column added by the CDSchar_RAPositions from 2MASS name (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS name (declination part)degpos.eq.dec;meta.mainJ/ApJ/684/654/table3Spitzer photometry for known members of Chamaeleon IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS designation (JHHMMSSss+DDMMSSs)meta.id;meta.maincharONameName (1)meta.id[3.6]? Spitzer/IRAC 3.6um band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6]? 3.6um magnitude uncertaintymagstat.errorfloatnullable[4.5]? Spitzer/IRAC 4.5um band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5]? 4.5um magnitude uncertaintymagstat.errorfloatnullable[5.8]? Spitzer/IRAC 5.8um band magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? 5.8um magnitude uncertaintymagstat.errorfloatnullable[8.0]? Spitzer/IRAC 8.0um band magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? 8.0um magnitude uncertaintymagstat.errorfloatnullable[24]? Spitzer/MIPS 24um band magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_[24]? 24um magnitude uncertaintymagstat.errorfloatnullableSimbadNameSimbad column added by the CDSmeta.idchar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.id;meta.mainchar_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.main