Gaseous material orbiting the polluted, dusty white dwarf HE1349-2305
Melis, Carl, Dufour, P., Farihi, J., Bochanski, J., Burgasser, Adam J., Parsons, S. G., Gaensicke, B. T. (Boris T.), Koester, D. and Swift, Brandon J.. (2012) Gaseous material orbiting the polluted, dusty white dwarf HE1349-2305. Astrophysical Journal Letters, Vol.751 (No.1). article no.L4. ISSN 2041-8213Full text not available from this repository.
Official URL: http://dx.doi.org/10.1088/2041-8205/751/1/L4
We present new spectroscopic observations of the polluted, dusty, helium-dominated atmosphere white dwarf star HE1349-2305. 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. HE1349-2305 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. © 2012. The American Astronomical Society. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QB Astronomy
Q Science > QC Physics
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Astrophysical Journal Letters|
|Publisher:||IOP Publishing Ltd|
|Official Date:||20 May 2012|
|Page Range:||article no.L4|
|Access rights to Published version:||Restricted or Subscription Access|
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