J/A+A/642/A86ivo://CDS.VizieR/J/A+A/642/A86doi:10.26093/cds/vizier.36420086CDSTeixeira P.S.Scholz A.Alves J.2023-09-15T14:12:30Z2021-02-10T13:51:30ZCDS support team

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

cds-question@unistra.frstar-forming-regionsyoung-stellar-objectsinfrared-sourcesvisible-astronomyPrevious star formation studies have, out of necessity, often defined a population of young stars confined to the proximity of a molecular cloud. Gaia allows us to examine a wider, three-dimensional structure of nearby star forming regions, leading to a new understanding of their history. We present a wide-area survey covering 494 deg^2^ of the Lupus complex, a prototypical low-mass star forming region. Our survey includes all known molecular clouds in this region as well as parts of the Upper Scorpius and Upper Centaurus Lupus (UCL) groups of the Sco-Cen complex. We combine Gaia DR2 proper motions and parallaxes as well as ALLWISE mid-infrared photometry to select young stellar objects (YSOs) with disks. The YSO ages are inferred from Gaia color-magnitude diagrams, and their evolutionary stages from the slope of the spectral energy distributions. We find 98 new disk-bearing sources. Our new sample includes objects with ages ranging from 1 to 15Myr and masses ranging from 0.05 to 0.5M_{sun}_, and consists of 56 sources with thick disks and 42 sources with anemic disks. While the youngest members are concentrated in the clouds and at distances of 160 pc, there is a distributed population of slightly older stars that overlap in proper motion, spatial distribution, distance, and age with the Lupus and UCL groups. The spatial and kinematic properties of the new disk-bearing YSOs indicate that Lupus and UCL are not distinct groups. Our new sample comprises some of the nearest disks to Earth at these ages, and thus provides an important target for follow-up studies of disks and accretion in very low mass stars, for example with ALMA and ESO-VLT X-shooter.2020A&A...642A..86Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/642/A86CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)II/328 : AllWISE Data Release (Cutri+ 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/642/A86https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/642/A86http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/642/A86https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/642/A86https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/642/A86http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/642/A86GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/642/A86/tablea1 (New disk-bearing YSO candidate members of Lupus and/or UCL)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A86/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A86/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A86/tablea1?GETtext/xml+votable180.050000true239.5256667-42.14366670.005555555555555556Cone search capability for table J/A+A/642/A86/tabled1 (New disk-bearing YSO US candidate members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A86/tabled1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A86/tabled1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A86/tabled1?GETtext/xml+votable180.050000true245.4049167-28.97583330.005555555555555556Cone search capability for table J/A+A/642/A86/tablee1 (Candidate new V1062 Sco disk-bearing YSOs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/642/A86/tablee1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/642/A86/tablee1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/642/A86/tablee1?GETtext/xml+votable180.050000true253.0999167-39.09811110.0055555555555555566/42409 42411 42415 42419 42422 42425 42428 42430 42549 42554 42574 42582 42588 42590 42595-42596 42598-42600 42602 42606-42608 42610-42611 42614 42617 42621 42652 42655 42671 42683 42685 42691 42707-42708 42711 42713-42715 42718 42726 42736 42739 42753-42754 42756-42757 42760-42761 42764 42768-42769 42789 42791-42792 42795 42797 42799-42801 42824 42885 42890 42893-42895 42899 42906 42909 42918 42923 42934 42937-42938 42940 44051 44053 44062 44081 44101-44102 44104 44109 44115 44127 44140 44245 44293 44301 44304-44305 44307 44310 44314 44316 44331 44340https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/642/A86?format=asciiOpticalInfrareddefaultJ/A+A/642/A86/tablea1New disk-bearing YSO candidate members of Lupus and/or UCLrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[AB] Group (1)meta.codecharGaiaDR2Gaia DR2 designationmeta.id;meta.mainn_GaiaDR2[d] Note on GaiaDR2 (2)meta.notecharWISEAALLWISE designationmeta.idcharn_WISEA[+] Note on WISEA (2)meta.notecharTypeDisk typesrc.classcharNotesNotes (3)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from AllWISE name (right ascension part)degpos.eq.ra;meta.main_DEPosition from AllWISE name (declination part)degpos.eq.dec;meta.mainJ/A+A/642/A86/tabled1New disk-bearing YSO US candidate membersTypeDisk typesrc.classcharNotesNotes (3)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from AllWISE name (right ascension part)degpos.eq.ra;meta.main_DEPosition from AllWISE name (declination part)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[AB] Group (1)meta.codecharGaiaDR2Gaia DR2 designationmeta.id;meta.mainn_GaiaDR2[d] Note on GaiaDR2 (2)meta.notecharWISEAALLWISE designationmeta.idcharn_WISEA[+] Note on WISEA (2)meta.notecharJ/A+A/642/A86/tablee1Candidate new V1062 Sco disk-bearing YSOsNotesNotes (3)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from AllWISE name (right ascension part)degpos.eq.ra;meta.main_DEPosition from AllWISE name (declination part)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[AB] Group (1)meta.codecharGaiaDR2Gaia DR2 designationmeta.id;meta.mainn_GaiaDR2[d] Note on GaiaDR2 (2)meta.notecharWISEAALLWISE designationmeta.idcharn_WISEA[+] Note on WISEA (2)meta.notecharTypeDisk typesrc.classchar