Melis, Carl, Dufour, P., Farihi, J., Bochanski, J., Burgasser, Adam J., Parsons, S. G., Gaensicke, B. T., Koester, Detlev 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. doi:10.1088/2041-8205/751/1/L4 ISSN 2041-8213.

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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. © 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, Engineering and Medicine > Science > Physics
Journal or Publication Title:	Astrophysical Journal Letters
Publisher:	IOP Publishing Ltd
ISSN:	2041-8213
Official Date:	20 May 2012
Dates:	Date Event 20 May 2012 Published
Volume:	Vol.751
Number:	No.1
Page Range:	article no.L4
DOI:	10.1088/2041-8205/751/1/L4
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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