J/ApJ/845/44ivo://CDS.VizieR/J/ApJ/845/44doi:10.26093/cds/vizier.18450044CDSTripathi A.Andrews S.M.Birnstiel T.Wilner D.J.2018-05-17T12:11:34Z2018-04-16T15:44:04ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsmillimeter-astronomysubmillimeter-astronomystellar-radiistellar-distanceinterstellar-mediumWe present a survey at subarcsecond resolution of the 340GHz dust continuum emission from 50 nearby protoplanetary disks, based on new and archival observations with the Submillimeter Array. The observed visibility data were modeled with a simple prescription for the radial surface brightness profile. The results were used to extract intuitive, empirical estimates of the emission "size" for each disk, R_eff_, defined as the radius that encircles a fixed fraction of the total continuum luminosity, L_mm_. We find a significant correlation between the sizes and luminosities, such that R_eff_{propto}L_mm_^0.5^, providing a confirmation and quantitative characterization of a putative trend that was noted previously. This correlation suggests that these disks have roughly the same average surface brightness interior to their given effective radius, ~0.2Jy/arcsec^2^ (or 8K in brightness temperature). The same trend remains, but the 0.2dex of dispersion perpendicular to this relation essentially disappears, when we account for the irradiation environment of each disk with a crude approximation of the dust temperatures based on the stellar host luminosities. We consider two (not mutually exclusive) explanations for the origin of this size-luminosity relationship. Simple models of the growth and migration of disk solids can account for the observed trend for a reasonable range of initial conditions, but only on timescales that are much shorter than the nominal ages present in the sample. An alternative scenario invokes optically thick emission concentrated on unresolved scales, with filling factors of a few tens of percent, which is perhaps a manifestation of localized particle traps.2017ApJ...845...44Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/845/44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)J/AJ/117/354 : OB associations from Hipparcos (de Zeeuw+, 1999)J/ApJ/734/98 : DISCS. II. Southern sky disk data (Oberg+, 2011)J/ApJ/751/115 : mm emission from Taurus binary systems (Harris+, 2012)J/ApJ/771/129 : Submillimetric Class II sources of Taurus (Andrews+, 2013)J/ApJ/773/168 : Submm fluxes of very low-mass stars and BDs (Mohanty+, 2013)J/MNRAS/435/1671 : SCUBA-2 850um survey in {sigma}Ori cluster (Williams+, 2013)J/ApJ/784/62 : Circumstellar disks around Taurus bin. stars (Akeson+, 2014)J/ApJ/802/77 : Protoplanetary disk masses in NGC 2024 cluster (Mann+, 2015)J/ApJ/826/16 : ALMA & GeMS observations of the OMC1 region (Eisner+, 2016)J/ApJ/827/142 : ALMA obs. of GKM stars in Upper Sco (Barenfeld+, 2016)J/ApJ/828/46 : ALMA survey of Lupus protoplanetary disks. I. (Ansdell+,J/ApJ/831/125 : ALMA 887{mu}m obs. of ChaI region (Pascucci+, 2016)J/AJ/153/240 : Protoplanetary disks in sigma Ori with ALMA (Ansdell+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/845/44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/845/44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/845/44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/845/44https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/845/44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/845/44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/845/44/disks (Imaging parameters and size-luminosity relation and associated parameters for the nearby disk targets (tables 2 and 4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/845/44/disks?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/845/44/disks?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/845/44/disks?GETtext/xml+votable180.050000true56.4512532.40333060.0055555555555555566/1029 1030 1031 1048 1050 1052 1053 1054 1073 1075 1081 1114 1115 1168 1170 1539 23549 23551 24277 24279 24300 28921 30741 38382 42704 42885 42970 42981 42992 44049 44361https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/845/44?format=asciiRadiodefaultJ/ApJ/845/44/table1Observations log for the 50 targetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget identifier (G1)meta.id;meta.maincharDateUT date of the observationtime.epoch;obsnullableConfigSMA configuration (1)instr.setupcharRef[1/21] Reference code (2)meta.noteintJ/ApJ/845/44/disksImaging parameters and size-luminosity relation and associated parameters for the nearby disk targets (tables 2 and 4)SimbadNameSimbad column added by the CDSmeta.idchare_L*Negative uncertainty on LsunsolLumstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget identifier (G1)meta.id;meta.maincharprimaryNobsNumber of SMA observations for this targetmeta.numberintnullableRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainnu[334.9/349.1] Mean frequence {nu}GHzem.freqfloatBeam1Beam 1arcsecphys.veloc.ang;instr.beamfloatBeam2Beam 2arcsecphys.angSizefloatPA[8/177] Beam position angledegpos.posAng;instr.beamintrms[0.7/10] rms noise levelmJy/beaminstr.det.noisefloatl_logReffLimit flag on logReffmeta.code.errorcharlogReff[1/2.3] Effective radiuslog(au)phys.size.radiusfloate_logReff[0.01/0.5]? Negative uncertainty on logRefflog(au)stat.errorfloatnullableE_logReff? Positive uncertainty on logRefflog(au)stat.error;stat.maxfloatnullablelogLmm[-1.7/0.2] Log of the millimeter continuum luminositylog(Jy)phys.luminosity;em.radiofloate_logLmmNegative uncertainty on logLmmlog(Jy)stat.errorfloatE_logLmm[0.01/0.5] Positive uncertainty on logLmmlog(Jy)stat.error;stat.maxfloatPlx[3/17] Mean parallax (bar{omega})maspos.parallax;stat.meanfloate_Plx[0.06/1.7] Plx uncertaintymasstat.error;pos.parallaxfloatDist[59/297] Distancepcpos.distance;pos.heliocentricinte_DistNegative uncertainty on Distpcstat.errorintE_Dist[1/130] Positive uncertainty on Distpcstat.error;stat.maxintL*[0.07/33.1] Stellar host luminositysolLumphys.luminosityfloatE_L*[0.05/15] Positive uncertainty on LsunsolLumstat.error;stat.maxfloatTd[8/62] Estimated average dust temperatureKphys.temperatureinte_TdNegative uncertainty on TdKstat.errorintE_Td[1/67] Positive uncertainty on TdKstat.error;stat.maxint