J/ApJ/938/54ivo://CDS.VizieR/J/ApJ/938/54doi:10.26093/cds/vizier.19380054CDSRuiz-Rodriguez D.A.Cieza L.A.Casassus S.Almendros-Abad V.Jofre P.,Muzic K.Ramirez K.P.Batalla-Falcon G.Dunham M.M.,Gonzalez-Ruilova C.Hales A.Humphreys E.Nogueira P.H.Paladini C.,Tobin J.Williams J.P.Zurlo A.2025-02-04T20:09:42Z2024-09-24T13:59:21ZCDS support team

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

cds-question@unistra.frm-starsinfrared-astronomyspectroscopyco-line-emissionyoung-stellar-objectsbrown-dwarfsWe report the serendipitous discovery of an elliptical shell of CO associated with the faint stellar object SSTc2d J163134.1-240060 as part of the "Ophiuchus Disk Survey Employing ALMA" (ODISEA), a project aiming to study the entire population of protoplanetary disks in the Ophiuchus Molecular Cloud from 230GHz continuum emission and ^12^CO(J=2-1), ^13^CO(J=2-1) and C^18^CO(J=2-1) lines readable in Band 6. Remarkably, we detect a bright ^12^CO elliptical shape emission of ~3"x4" toward SSTc2d J163134.1-240060 without a 230GHz continuum detection. Based on the observed near-IR spectrum taken with the Very Large Telescope (KMOS), the brightness of the source, its three-dimensional motion, and Galactic dynamic arguments, we conclude that the source is not a giant star in the distant background (>5-10kpc) and is most likely to be a young brown dwarf in the Ophiuchus cloud, at a distance of just ~139pc. This is the first report of quasi-spherical mass loss in a young brown dwarf. We suggest that the observed shell could be associated with a thermal pulse produced by the fusion of deuterium, which is not yet well understood, but for a substellar object is expected to occur during a short period of time at an age of a few Myr, in agreement with the ages of the objects in the region. Other more exotic scenarios, such as a merger with planetary companions, cannot be ruled out from the current observations.2022ApJ...938...54Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/938/54CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/99/291 : CO and HCN obs. of circumstellar envelopes (Loup+ 1993)J/ApJS/111/445 : Spectra of normal stars in the K band (Wallace+ 1997)J/A+A/453/635 : Modelling the Gal. Interstellar Extinction (Marshall+, 2006)J/ApJ/667/308 : Weak-line T Tauri in Spitzer c2d Survey. II. (Cieza+, 2007)J/ApJS/173/104 : Stellar population in Chamaeleon I (Luhman, 2007)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/ApJS/190/100 : NIR proper motion survey using 2MASS (Kirkpatrick+, 2010)J/ApJ/745/56 : Upper Sco members rotational velocities (Dahm+, 2012)J/A+A/547/A105 : D-burning in core accretion objects (Molliere+, 2012)J/A+A/562/A127 : NIR integral field spectra of 15 M-L dwarfs (Bonnefoy+, 2014)J/ApJ/786/97 : Photospheric properties of T Tauri stars (Herczeg+, 2014)J/A+A/564/A55 : 1.1-2.4um sp. of 7 young M and L dwarfs (Manjavacas+, 2014)J/ApJ/810/158 : M,L,T dwarfs fundamental param. and SEDs (Filippazzo+, 2015)J/A+A/605/A116 : ALMA FITS cubes of CO(1-0) and CO(2-1) (Kerschbaum+, 2017)J/AJ/153/46 : Spectroscopy of candidate members in Taurus (Luhman+, 2017)J/A+A/626/A80 : Census of Rho Oph members from Gaia DR2 (Canovas+, 2019)J/MNRAS/482/698 : Oph. DIsc Survey Employing ALMA (ODISEA). I. (Cieza+, 2019)J/ApJ/875/L9 : ODISEA: Disk dust mass distributions (Williams+, 2019)J/AJ/159/282 : Membership in Ophiuchus & Upper Sco complex (Esplin+, 2020)J/A+A/638/A74 : Cat. of dense cores in Oph molecular cloud (Ladjelate+, 2020)J/A+A/657/A129 : 13 young brown dwarfs SINFONI spectra (Almendros-Abad+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/938/54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/938/54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/938/54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/938/54https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/938/54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/938/54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/938/54/fits (Summary of the VLT-KMOS spectrum of SSTc2d J163134.1-240060 (Data behind Figure 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/938/54/fits?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/938/54/fits?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/938/54/fits?GETtext/xml+votable180.050000true247.892083-24.0166670.0055555555555555566/42992https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/938/54?format=asciiInfraredRadiodefaultJ/ApJ/938/54/fitsSummary of the VLT-KMOS spectrum of SSTc2d J163134.1-240060 (Data behind Figure 3)_RAPosition from name (right ascension part)degpos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadNameSimbad column added by the CDSmeta.idcharnullable_DEPosition from name (declination part)degpos.eq.dec;meta.mainSSTc2dBrown dwarf identifier (JHHMMSS.s+DDMMSS)meta.id;meta.maincharInst[KMOS] Instrument ("KMOS")meta.id;instrcharProgIDESO program identifier ("107.22RQ.001")meta.id;obscharFileNameName of the FITS file in subdirectory "sp"meta.id;meta.fitscharSpInteractive spectrum plotmeta.ref.urlchar