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A gaseous metal disk around a white dwarf

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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, Volume 314 (Number 5807). pp. 1908-1910. doi:10.1126/science.1135033 ISSN 0036-8075.

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Official URL: http://dx.doi.org/10.1126/science.1135033

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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
Divisions: Faculty of Science, Engineering and Medicine > Science > Statistics
Journal or Publication Title: Science
Publisher: American Association for the Advancement of Science
ISSN: 0036-8075
Official Date: 22 December 2006
Dates:
DateEvent
22 December 2006UNSPECIFIED
Volume: Volume 314
Number: Number 5807
Number of Pages: 3
Page Range: pp. 1908-1910
DOI: 10.1126/science.1135033
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

Data sourced from Thomson Reuters' Web of Knowledge

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