J/ApJS/256/30ivo://CDS.VizieR/J/ApJS/256/30doi:10.26093/cds/vizier.22560030CDSKospal A.Cruz-Saenz de Miera F.White J.A.Abraham P.Chen L.,Csengeri T.Dong R.Dunham M.M.Feher O.Green J.D.Hashimoto J.,Henning T.Hogerheijde M.Kudo T.Liu H.B.Takami M.Vorobyov E.I.2022-08-25T11:49:23Z2022-03-02T14:09:05ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsco-line-emissionradio-continuum-emissionmillimeter-astronomysubmillimeter-astronomyinterferometryThe FU Orionis-type objects (FUors) are low-mass pre-main-sequence stars undergoing a temporary but significant increase of mass accretion rate from the circumstellar disk onto the protostar. It is not yet clear what triggers the accretion bursts and whether the disks of FUors are in any way different from the disks of nonbursting young stellar objects. Motivated by this, we conducted a 1.3mm continuum survey of 10 FUors and FUor-like objects with ALMA, using both the 7m array and the 12m array in two different configurations to recover emission at the widest possible range of spatial scales. We detected all targeted sources and several nearby objects as well. To constrain the disk structure, we fit the data with models of increasing complexity from 2D Gaussian to radiative transfer, enabling comparison with other samples modeled in a similar way. The radiative transfer modeling gives disk masses that are significantly larger than what is obtained from the measured millimeter fluxes assuming optically thin emission, suggesting that the FUor disks are optically thick at this wavelength. In comparison with samples of regular class II and class I objects, the disks of FUors are typically a factor of 2.9-4.4 more massive and a factor of 1.5-4.7 smaller in size. A significant fraction of them (65%-70%) may be gravitationally unstable.2021ApJS..256...30Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/256/30CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)J/AJ/145/94 : Luminosities of protostars from Spitzer (Dunham+, 2013)J/AJ/147/140 : SED of 24 class I & class II FU Orionis stars (Gramajo+, 2014)J/A+A/582/L12 : V960 Mon light curves (Hackstein+, 2015)J/ApJ/828/46 : ALMA survey of Lupus protoplanetary disks. I. (Ansdell+, 2016)J/AJ/153/240 : Protoplanetary disks in sigma Ori with ALMA (Ansdell+, 2017)J/A+A/600/A141 : Orion A integral shaped filament image (Kainulainen+, 2017)J/A+A/607/A39 : 7 FU Orionis-type stars CO spectral cubes (Feher+, 2017)J/A+A/618/A79 : FU Orionis small-amplitude light variations (Siwak+, 2018)J/ApJ/878/111 : Members in Serpens with Gaia DR2 (Herczeg+, 2019)J/ApJ/890/130 : VANDAM survey of Orion protostars. II. (Tobin+, 2020)J/A+A/646/A102 : FU Ori multi-band interferometric observations (Labdon+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/256/30https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/256/30http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/256/30https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/256/30https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/256/30http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/256/30GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/256/30/table1 (Log of our ALMA continuum observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/256/30/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/256/30/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/256/30/table1?GETtext/xml+votable180.050000true67.89218.13469440.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/ApJS/256/306/21456 21677 22039 22805 23549 23637 30366 30613 39753 42233https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/256/30?format=asciiMillimeterRadiodefaultJ/ApJS/256/30/table1Log of our ALMA continuum observationsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the starmeta.id;meta.maincharDist[140/1574] Distancepcpos.distance;pos.heliocentricinte_Dist[10/350]? Negative uncertainty on Distpcstat.errorintnullableE_Dist[10/600]? Positive uncertainty on Distpcstat.error;stat.maxintnullableRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainDateDate of observation (UT)time.epochnullableConfConfigurationinstr.setupcharRes[0.1/5.2] Angular resolutionarcsecpos.angResolutionfloatExp[3.1/22.8] Exposure timemintime.duration;obs.exposurefloatPWV[0.2/2.3]? ALMA precipitable water vapourmminstr.setupfloatnullableBaseline1Lower range of baselineminstr.baseline;stat.minintBaseline2Upper range of baselineminstr.baseline;stat.maxintfitsDownload the FITS filemeta.ref.urlcharFileNameName of the FITS file in subdirectory "img"meta.id;meta.fitscharADatDisplay the Vizier/Saada associated databasemeta.ref.urlchar