An Alma Disk Mass for the Candidate Protoplanetary Companion to FW Tau

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dc.contributor.utaustinauthorKraus, Adam L.en_US
dc.creatorKraus, Adam L.en_US
dc.creatorAndrews, Sean M.en_US
dc.creatorBowler, Brendan P.en_US
dc.creatorHerczeg, Gregoryen_US
dc.creatorIreland, Michael J.en_US
dc.creatorLiu, Michael C.en_US
dc.creatorMetchev, Stanimiren_US
dc.creatorCruz, Kelle L.en_US
dc.date.accessioned2016-10-28T19:38:38Z
dc.date.available2016-10-28T19:38:38Z
dc.date.issued2015-01en_US
dc.description.abstractWe present ALMA observations of the FW Tau system, a close binary pair of M5 stars with a wide-orbit (300 AU projected separation) substellar companion. The companion is extremely faint and red in the optical and near-infrared, but boasts a weak far-infrared excess and optical/near-infrared emission lines indicative of a primordial accretion disk of gas and dust. The component-resolved 1.3mm continuum emission is found to be associated only with the companion, with a flux (1.78 +/- 0.03 mJy) that indicates a dust mass of 1-2M(circle plus). While this mass reservoir is insufficient to form a giant planet, it is more than sufficient to produce an analog of the Kepler-42 exoplanetary system or the Galilean satellites. The mass and geometry of the disk-bearing FW Tau companion remains unclear. Near-infrared spectroscopy shows deep water bands that indicate a spectral type later than M5, but substantial veiling prevents a more accurate determination of the effective temperature (and hence mass). Both a disk-bearing "planetary-mass" companion seen in direct light or a brown dwarf tertiary viewed in light scattered by an edge-on disk or envelope remain possibilities.en_US
dc.description.departmentAstronomyen_US
dc.description.sponsorshipen_US
dc.identifierdoi:10.15781/T2VT1GS4H
dc.identifier.citationKraus, Adam L., Sean M. Andrews, Brendan P. Bowler, Gregory Herczeg, Michael J. Ireland, Michael C. Liu, Stanimir Metchev, and Kelle L. Cruz. "An ALMA Disk Mass for the Candidate Protoplanetary Companion to FW Tau." The Astrophysical Journal Letters, Vol. 798, No. 1 (Jan., 2015): L23.en_US
dc.identifier.doi10.1088/2041-8205/798/1/l23en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/2152/43123
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Lettersen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectplanets and satellites: Formationen_US
dc.subjectplanets and satellites: generalen_US
dc.subjectprotoplanetary disksen_US
dc.subjectbrown dwarf disksen_US
dc.subjectsub-stellar companionen_US
dc.subjecton circumstellar disken_US
dc.subjectvery-low massen_US
dc.subjectbinary-systemsen_US
dc.subjectupper scorpiusen_US
dc.subjectwide orbitsen_US
dc.subjectplaneten_US
dc.subjectFormationen_US
dc.subjectgiant planetsen_US
dc.subjectstarsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleAn Alma Disk Mass for the Candidate Protoplanetary Companion to FW Tauen_US
dc.typeArticleen_US

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