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95716 |
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|a Melis, Carl
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|a MIT Kavli Institute for Astrophysics and Space Research
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|a Burgasser, Adam J.
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|a Dufour, P.
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|a Farihi, J.
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|a Bochanski, John J.
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|a Burgasser, Adam J.
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|a Parsons, S. G.
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|a Gansicke, Boris T.
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|a Koester, D.
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|a Swift, Brandon J.
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|a GASEOUS MATERIAL ORBITING THE POLLUTED, DUSTY WHITE DWARF HE 1349-2305
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|b Institute of Physics/American Astronomical Society,
|c 2015-02-27T15:01:03Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/95716
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|a We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE 1349-2305. Optical spectroscopy reveals weak Ca II infrared triplet emission indicating that metallic gas debris orbits and is accreted by the white dwarf. Atmospheric abundances are measured for magnesium and silicon while upper limits for iron and oxygen are derived from the available optical spectroscopy. HE 1349-2305 is the first gas disk-hosting white dwarf star identified among previously known polluted white dwarfs. Further characterization of the parent body polluting this star will require ultraviolet spectroscopy.
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|a National Science Foundation (U.S.) (Award No. AST-1003318)
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|a Centre de recherche en astrophysique du Québec (CRAQ postdoctoral fellow)
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|a Natural Sciences and Engineering Research Council Canada
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|a Fonds québécois de la recherche sur la nature et les technologies (Fund FQRNT Québec)
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|a en_US
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|a Article
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|t Astrophysical Journal
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