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