J/ApJ/827/142ivo://CDS.VizieR/J/ApJ/827/142doi:10.26093/cds/vizier.18270142CDSBarenfeld S.A.Carpenter J.M.Ricci L.Isella A.2017-06-13T11:08:24Z2017-01-06T15:36:59ZCDS support team

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

cds-question@unistra.frstellar-massesstellar-spectral-typeseffective-temperaturemillimeter-astronomysubmillimeter-astronomyextinctionWe present ALMA observations of 106 G-, K-, and M-type stars in the Upper Scorpius OB Association hosting circumstellar disks. With these data, we measure the 0.88mm continuum and ^12^CO J=3-2 line fluxes of disks around low-mass (0.14-1.66M_{sun}_) stars at an age of 5-11Myr. Of the 75 primordial disks in the sample, 53 are detected in the dust continuum and 26 in CO. Of the 31 disks classified as debris/evolved transitional disks, five are detected in the continuum and none in CO. The lack of CO emission in approximately half of the disks with detected continuum emission can be explained if CO is optically thick but has a compact emitting area (<~40au), or if the CO is heavily depleted by a factor of at least ~1000 relative to interstellar medium abundances and is optically thin. The continuum measurements are used to estimate the dust mass of the disks. We find a correlation between disk dust mass and stellar host mass consistent with a power-law relation of M_dust_{propto}M_*_^1.67+/-0.37^. Disk dust masses in Upper Sco are compared to those measured in the younger Taurus star-forming region to constrain the evolution of disk dust mass. We find that the difference in the mean of log(M_dust_/M*) between Taurus and Upper Sco is 0.64+/-0.09, such that M_dust_/M* is lower in Upper Sco by a factor of ~4.5.2016ApJ...827..142Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/827/142CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/MNRAS/448/2737 : New PMS K/M Stars in Upper Scorpius (Rizzuto+, 2015)J/MNRAS/431/3222 : UKIDSS GCS Upper Sco members (Lodieu, 2013)J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)J/ApJ/758/31 : IR photometry for members of Upper Sco (Luhman+, 2012)J/ApJ/746/154 : Improved parallaxes for Sco-Cen members (Pecaut+, 2012)J/ApJ/745/56 : Upper Sco members rotational velocities (Dahm+, 2012)J/ApJ/738/122 : ScoCen debris disks Around F- and G-type stars (Chen+, 2011)J/A+A/533/A109 : Pisa pre-main sequence tracks and isochrones (Tognelli+, 2011)J/A+A/527/A24 : Spectra of low-mass stars in Upper Sco (Lodieu+, 2011)J/A+A/504/981 : Proper motions of cool stars in Upper Sco OB (Bouy+, 2009)J/ApJ/705/1646 : Debris disks in Upper Sco (Carpenter+, 2009)J/ApJ/688/377 : Low-mass objects in Upper Scorpius. II. (Slesnick+, 2008)J/ApJ/651/L49 : Upper Sco OB association IRAC observations (Carpenter+, 2006)J/AJ/131/3016 : Low-mass objects in Upper Scorpius (Slesnick+, 2006)J/AJ/124/404 : Upper Scorpius OB association Li survey. II. (Preibisch, 2002)J/AJ/120/479 : Low-mass stars in the Upper Sco association (Ardila+, 2000)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/827/142https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/827/142http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/827/142https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/827/142https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/827/142http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/827/142GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/827/142/stars (Stellar properties, continuum and CO J=3-2 flux measurements and derived dust masses)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/827/142/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/827/142/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/827/142/stars?GETtext/xml+votable180.050000true233.9523333-29.98197220.0055555555555555565/11090 11091 11094 6/42903 42932 42943 42976 42979 42984 42985 42986 42990 42992 43000 43001 44118 44307 44310 44311 44317 44318 44319 44343 44352 44353 44355 44356 44358 44369 44371 44374 44386 44389 44397 44400 44401 444042.2573230262263177e-22 2.2573230262263177e-22https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/827/142?format=asciiOpticalRadiodefaultJ/ApJ/827/142/starsStellar properties, continuum and CO J=3-2 flux measurements and derived dust massesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS ID (JHHMMSSss+DDMMSSs)meta.id;meta.maincharSpTMK spectral type (G2 to M5) from Luhman & Mamajek (2012, J/ApJ/758/31)src.spTypecharTypeDisk type (1)src.classcharAv[-0.6/4.3] Visual extinctionmagphys.absorption;em.opt.Vfloate_Av[0.2/0.5] Uncertainty in Avmagstat.errorfloatlogTeff[3.4/3.8] Log effective temperaturelog(K)phys.temperature.effectivefloate_logTeff[0/0.02] Uncertainty in logTefflog(K)stat.error;phys.temperature.effectivefloatlogL[-1.9/0.8] Log luminosity (estimated using 2MASS J-band; see section 2)log(solLum)phys.luminosity;em.IRfloate_logL[0.1/0.2] Uncertainty in logLlog(solLum)stat.errorfloatlogM[-0.9/0.3] Log stellar masslog(solMass)phys.massfloate_logM[0.04/0.2] Lower uncertainty in logMlog(solMass)stat.errorfloatE_logM[0.02/0.2] Upper uncertainty in logMlog(solMass)stat.error;stat.maxfloatf_Aper? Continuum flux density photometry flag: 1=aperturemeta.codeintnullableSnu[-0.4/904] ALMA 0.88mm continuum flux densitymJyphot.flux.density;em.mm.200-400GHzfloate_Snu[0.1/1] Uncertainty in SnumJystat.errorfloatdRA[-0.6/0.5]? ALMA continuum offset from stellar source, RA (1)arcsecpos.eq.ra;arith.difffloatnullablee_dRA[0.04/0.3]? Uncertainty in dRAarcsecstat.errorfloatnullabledDE[-0.6/0.6]? ALMA continuum offset from stellar source, Dec (1)arcsecpos.eq.dec;arith.difffloatnullablee_dDE[0.04/0.3]? Uncertainty in dDEarcsecstat.errorfloatnullableFWHM[0.1/0.5]? Full width at half maximum (2)arcsecspect.line.widthfloatnullablee_FWHM[0.001/0.07]? Uncertainty in FWHMarcsecstat.error;phys.angSizefloatnullableCOFlux[-86/22748] ALMA CO J=3-2 fluxmJy.km/sphot.flux.density;em.line.CO;spect.lineinte_COFlux[16/158] Uncertainty in COFluxmJy.km/sstat.errorintVmin[-17/3.5] Velocity range of the CO, minimumkm/sinstr.bandwidthfloatVmax[6/24] Velocity range of the CO, maximumkm/sinstr.bandwidthfloatAper[0.3/2.1] Aperture Radiusarcsecphys.angSize;srcfloatl_MdustUpper limit flag on Mdust, in Earth Massesmeta.code.errorcharMdust[0.05/128] Disk dust mass(5.97236x10+24kg)phys.massfloate_Mdust[0.03/32]? Uncertainty in Mdust, in Earth Masses(5.97236x10+24kg)stat.errorfloatnullableUCatDisplay Upper Sco members data from Carpenter+, 2006, J/ApJ/651/L49 and Luhman+, 2012, J/ApJ/758/31, within 1"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.main