Gänsicke, B. T. (Boris T.), Marsh, T. R., Southworth, J. (John) and Rebassa-Mansergas, A.. (2006) A gaseous metal disk around a white dwarf. SCIENCE, 314 (5807). pp. 1908-1910. ISSN 0036-8075

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Abstract

The destiny of planetary systems through the late evolution of their host stars is very uncertain. We report a metal-rich gas disk around a moderately hot and young white dwarf. A dynamical model of the double-peaked emission lines constrains the outer disk radius to just 1.2 solar radii. The likely origin of the disk is a tidally disrupted asteroid, which has been destabilized from its initial orbit at a distance of more than 1000 solar radii by the interaction with a relatively massive planetesimal object or a planet. The white dwarf mass of 0.77 solar mass implies that planetary systems may form around high-mass stars.

Item Type:	Journal Article
Subjects:	Q Science
Journal or Publication Title:	SCIENCE
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
ISSN:	0036-8075
Date:	22 December 2006
Volume:	314
Number:	5807
Number of Pages:	3
Page Range:	pp. 1908-1910
Identification Number:	10.1126/science.1135033
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/32603

Data sourced from Thomson Reuters' Web of Knowledge

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