37 New T-type Brown Dwarfs in the Canada-France Brown Dwarfs survey

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DOIResolve DOI: http://doi.org/10.1088/0004-6256/141/6/203
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TypeArticle
Journal titleThe Astronomical journal
ISSN0004-6256
Volume141
Issue6
Article number203
Pages203-1
Subjectbrown dwarfs; infrared: stars, proper motions, surveys
AbstractThe Canada-France Brown Dwarfs Survey is an i'- and z'-band survey realized with MegaCam at the Canada-France-Hawaii Telescope that covers a surface area of 780 deg(2). Image analysis is now completed while J-band follow-up campaigns are similar to 90% done. The survey identified about 70 T dwarf candidates, of which 43 now have near-infrared spectra obtained with NIRI and GNIRS at Gemini and ISAAC at the Very Large Telescope. Six of these were previously published and we present here the 37 new discoveries, all T dwarfs. They range from T0 to T8.5 with four being of type T7 or later. Both newly identified T8 dwarfs are possibly high log( g) massive brown dwarfs of thin disk age. One T4.5 dwarf shows signs of sub-metallicity. We present proper motions and near-infrared photometry, and discuss about the most peculiar/interesting objects in some details.
Publication date
PublisherThe American Astronomical Society
LanguageEnglish
AffiliationNRC Herzberg Institute of Astrophysics; National Research Council Canada
Peer reviewedYes
NPARC number19739590
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Record identifier3467a362-bdb7-46fe-beb7-343a90f86c75
Record created2012-03-29
Record modified2016-05-09
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