J/ApJ/813/83ivo://CDS.VizieR/J/ApJ/813/83doi:10.26093/cds/vizier.18130083CDSCheetham A.C.Kraus A.L.Ireland M.J.Cieza L.Rizzuto A.C.,Tuthill P.G.2018-01-02T13:42:54Z2016-03-18T12:12:13ZCDS support team

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

cds-question@unistra.frmultiple-starsinfrared-sourcesstellar-spectral-typesstellar-massespre-main-sequence-starsWe conduct a multiplicity survey of members of the {rho} Ophiuchus cloud complex with high-resolution imaging to characterize the multiple-star population of this nearby star-forming region and investigate the relation between stellar multiplicity and star and planet formation. Our aperture masking survey reveals the presence of five new stellar companions beyond the reach of previous studies, but does not result in the detection of any new substellar companions. We find that 43+/-6% of the 114 stars in our survey have stellar-mass companions between 1.3 and 780 AU, while 7_-5_^+8^% host brown dwarf companions in the same interval. By combining this information with knowledge of disk-hosting stars, we show that the presence of a close binary companion (separation <40AU) significantly influences the lifetime of protoplanetary disks, a phenomenon previously seen in older star-forming regions. At the ~1-2Myr age of our Ophiuchus members ~2/3 of close binary systems have lost their disks, compared to only ~30% of single stars and wide binaries. This has a significant impact on the formation of giant planets, which are expected to require much longer than 1 Myr to form via core accretion and thus planets formed via this pathway should be rare in close binary systems.2015ApJ...813...83Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/813/83CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/297 : NOMAD Catalog (Zacharias+ 2005)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/A+A/581/A30 : Herschel maps of {rho} Oph (Rebollido+, 2015)J/ApJ/745/19 : Binary systems in Taurus-Auriga (Kraus+, 2012)J/ApJ/744/134 : SONYC new brown dwarfs in {rho} Oph (Muzic+, 2012)J/AJ/142/140 : Optical spectroscopy of {rho} Oph stars. II. (Erickson+, 2011)J/ApJ/731/8 : Pap II-Multiple star formation in Taurus-Auriga (Kraus+, 2011)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/ApJ/712/925 : Transition circumstellar disks in Ophiuchus (Cieza+, 2010)J/ApJ/709/L114 : Protoplanetary disks in PMS binaries (Duchene, 2010)J/ApJ/703/1511 : Wide binaries in Taurus and Upper Sco (Kraus+, 2009)J/ApJ/696/L84 : Primordial circumstellar disks in binary syst. (Cieza+, 2009)J/ApJS/181/62 : Survey of young solar analogs (Metchev+, 2009)J/A+A/485/155 : HK photometry of rho Oph PMS stars (Alves de Oliveira+, 2008)J/ApJ/670/1367 : Gemini Deep Planet Survey (Lafreniere+, 2007)J/ApJ/662/413 : Wide multiplicity in 3 associations with 2MASS (Kraus+, 2007)J/A+A/460/695 : Search for Associations Containing Young stars (Torres+, 2006)J/A+A/458/461 : Binary stars in the Orion Nebula Cluster (Koehler+, 2006)J/A+A/452/245 : Near-IR photometry of PMS stars in rho Oph (Natta+, 2006)J/ApJ/640/1051 : 25pc sample of Sun-like stars (Grether+, 2006)J/ApJ/630/381 : Mid-IR imaging in {rho} Oph (Barsony+, 2005)J/AJ/130/1733 : Optical spectroscopy of {rho} Oph stars (Wilking+, 2005)J/AJ/126/1526 : IR photometry of ultracool dwarfs (Bouy+, 2003)J/ApJ/566/993 : rho Oph (Lynds 1688) cluster NICMOS imaging (Allen+, 2002)J/A+A/372/173 : ISOCAM obs. of the rho Ophiuchi cloud (Bontemps+, 2001)J/A+A/356/541 : T Tauri stars in the Sco-Cen OB association (Koehler+, 2000)J/A+A/337/403 : Low-mass stars evolutionary models (Baraffe+ 1998)J/A+A/333/619 : Upper Scorpius OB association Lithium survey (Preibisch+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/813/83https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/813/83http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/813/83https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/813/83https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/813/83http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/813/83GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/813/83/table1 (Survey sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/813/83/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/813/83/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/813/83/table1?GETtext/xml+votable180.050000true245.165-26.574555560.005555555555555556Cone search capability for table J/ApJ/813/83/table3 (Non detections)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/813/83/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/813/83/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/813/83/table3?GETtext/xml+votable180.050000true246.5125958-24.39334440.0055555555555555565/10745 6/42957 42958 42959 42970 42971 42976 42977 42988 42989 42992 42993 430008.650015785639275e-20 9.710690472292815e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/813/83?format=asciiInfraredOpticaldefaultJ/ApJ/813/83/table1Survey samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNDDisplay the non detection data (table 3)meta.ref.urlintnullableNameTarget Namemeta.id;meta.maincharprimaryCDisplay the companion data (table 4)meta.ref.urlintnullableRAJ2000[16] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[23/26] Degree of Declination (J2000)pos.eq.dec;meta.mainSpTAdopted MK Spectral Typesrc.spTypecharr_SpTSpectral Type Literature Reference (1)meta.ref;pos.frameintMass[0.2/11] Estimated mass following Kraus & Hillenbrand (2007, J/ApJ/662/413)solMassphys.massfloatRmag[6.9/20.8]? NOMAD R magnitude; Zacharias et al. (2004, I/297)magphot.mag;em.opt.RfloatnullableKsmag[4.5/10.7] 2MASS Ks magnitude; Skrutskie et al. (2006, VII/233)magphot.mag;em.IR.KfloatDisk[NY ] Evidence of a circumstellar disk?meta.codecharMult[NY] Evidence of multiplicity?meta.code.multipcharOphCatDisplay data from Preibisch+ 1998, J/A+A/333/619; Wilking+, 2005, J/AJ/130/1733; Torres+, 2006, J/A+A/460/695; Cieza+, 2010, J/ApJ/712/925; Erickson+, 2011, J/AJ/142/140 within 1.5" if anymeta.ref.urlintnullablePCatDisplay data within 1" from 2MASS (II/246) and NOMAD (I/297) photometric catalogsmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/813/83/table3Non detectionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePrimary Target Namemeta.id;meta.maincharDateObservation Datetime.epoch;obsnullableFilterAperture masking filter ("CH4_short", "Kp", "Ks" or "Lp")meta.id;instr.filterchardm10-20[0/4.2] Magnitude Detection limits in Filter at separations 10-20masmagphot.magfloatdm20-40Magnitude Detection limits in Filter at separations 20-40masmagphot.magfloatdm40-80[1.4/6.3] Magnitude Detection limits in Filter at separations 40-80masmagphot.magfloatdm80-160Magnitude Detection limits in Filter at separations 80-160masmagphot.magfloatdm160-240Magnitude Detection limits in Filter at separations 160-240masmagphot.magfloatdm240-320[0.9/6.2] Magnitude Detection limits in Filter at separations 240-320masmagphot.magfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/813/83/table4Companions identified with aperture maskingrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNamePrimary Target Namemeta.id;meta.maincharNew[a] a: First Observation flagmeta.codecharDateObservation Datetime.epoch;obsnullableFilterAperture masking filter ("CH4_short", "Kp", or "Ks")meta.id;instr.filtercharSep[21.7/128.2] Secondary-Primary Separationmaspos.angDistancefloate_Sep[0.1/3.5] Uncertainty in Sepmasstat.errorfloatPA[50.9/314.1] Secondary-Primary Position Angledegpos.posAngfloate_PA[0.09/2.2] Uncertainty in PAdegstat.errorfloatdmag[0.1/3] Magnitude difference in Filtermagphot.mag;arith.difffloate_dmag[0.01/0.5] Uncertainty in dmagmagstat.error;phot.magfloatq[0.08/0.9] Secondary/Primary Mass Ratiophys.massfloatMass[0.1/2.4] Derived Secondary MasssolMassphys.massfloat