J/ApJ/696/L84ivo://CDS.VizieR/J/ApJ/696/L84doi:10.26093/cds/vizier.16969084CDSCieza L.A.Padgett D.L.Allen L.E.McCabe C.E.Brooke T.Y.Carey S.J.,Chapman N.L.Fukagawa M.Huard T.L.Noriga-Crespo A.Peterson D.E.,Rebull L.M.2017-12-12T14:44:48Z2011-05-10T12:33:45ZCDS support team

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

cds-question@unistra.frmolecular-cloudspre-main-sequence-starsinfrared-photometrysurveysmultiple-starsWe combine the results from several multiplicity surveys of pre-main-sequence stars located in four nearby star-forming regions with Spitzer data from three different Legacy Projects. This allows us to construct a sample of 349 targets, including 125 binaries, which we use to to investigate the effect of companions on the evolution of circumstellar disks. We find that the distribution of projected separations of systems with Spitzer excesses is significantly different (P~2.4e-5, according to the K-S test for binaries with separations less than 400AU) from that of systems lacking evidence for a disk. As expected, systems with projected separations less than 40AU are half as likely to retain at least one disk than are systems with projected separations in the 40-400AU range. These results represent the first statistically significant evidence for a correlation between binary separation and the presence of an inner disk (r~1AU). Several factors (e.g., the incompleteness of the census of close binaries, the use of unresolved disk indicators, and projection effects) have previously masked this correlation in smaller samples. We discuss the implications of our findings for circumstellar disk lifetimes and the formation of planets in multiple systems.2009ApJ...696L..84Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/696/L84CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/515/A75 : Low-mass population in {rho} Oph cloud (Alves de Oliveira+,J/PASJ/60/209 : Faint companions around YSOs in TMC (Itoh+, 2008)J/ApJ/684/654 : Low-mass members of Chamaeleon I (Luhman+, 2008)J/ApJ/675/1375 : IRAC/MIPS photometry in Cha I (Luhman+, 2008)J/A+A/488/987 : Near-infrared survey of R CrA cloud (Haas+, 2008)J/A+A/446/485 : New very low-mass members in Taurus (Guieu+, 2006)J/A+A/452/245 : Near-IR photometry of PMS stars in rho Oph (Natta+, 2006)J/ApJ/647/1180 : Infrared photometry of Taurus SFR (Luhman+, 2006)J/ApJ/630/381 : Mid-IR imaging in {rho} Oph (Barsony+, 2005)J/AJ/121/2673 : 3{mu}m survey of the Chamaeleon I dark cloud (Kenyon+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/696/L84https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/696/L84http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/696/L84https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/696/L84https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/696/L84http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/696/L84GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/696/L84/table1 (Multiplicity and Spitzer data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/696/L84/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/696/L84/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/696/L84/table1?GETtext/xml+votable180.050000true63.30928.31960.0055555555555555565/292 6/1029 1031 1039 1048 1050 1051 1052 1054 1061 1063 1073 1074 1075 1081 1082 1083 1156 1159 36956 36957 37128 42957 42959 42970 42971 42980 42981 42983 42989 42992 42993 42994 47742 47825 478283.036429446233786e-20 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/696/L84?format=asciiInfrareddefaultJ/ApJ/696/L84/table1Multiplicity and Spitzer dataF5.8umSpitzer/IRAC 5.8 micron fluxmJyphot.flux.density;em.IR.4-8umdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject Namemeta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainRegionStar-forming region (Cha_I, CrA, Oph or Tau)meta.idcharSep? Angular separation (if binary)arcsecpos.angDistancefloatnullableRefReference for multiplicity survey (1)meta.ref;pos.framecharF3.6umSpitzer/IRAC 3.6 micron fluxmJyphot.mag;em.IR.3-4umdoublee_F3.6umError in 3.6 micron fluxmJystat.errordoubleF4.5umSpitzer/IRAC 4.5 micron fluxmJyphot.mag;em.IR.4-8umdoublee_F4.5umError in 4.5 micron fluxmJystat.errordoublee_F5.8umError in 5.8 micron fluxmJystat.errordoubleF8.0umSpitzer/IRAC 5.8 micron fluxmJyphot.flux.density;em.IR.8-15umdoublee_F8.0umError in 5.8 micron fluxmJystat.errordouble2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idchar