Melis, C;
Dufour, P;
Farihi, J;
Bochanski, J;
Burgasser, AJ;
Parsons, SG;
Gänsicke, BT;
... Swift, BJ; + view all
(2012)
Gaseous material orbiting the polluted, dusty white dwarf HE1349-2305.
Astrophysical Journal Letters
, 751
(1)
, Article L4. 10.1088/2041-8205/751/1/L4.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | Gaseous material orbiting the polluted, dusty white dwarf HE1349-2305 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/2041-8205/751/1/L4 |
| Publisher version: | http://dx.doi.org/10.1088/2041-8205/751/1/L4 |
| Language: | English |
| Additional information: | Copyright © 2012. The American Astronomical Society. All rights reserved. |
| Keywords: | circumstellar matter; planet-star interactions; stars: abundances; stars: individual (HE 1349–2305); white dwarfs |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1477432 |
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