The chemical composition of an extrasolar minor planet

被引：244

作者：

Zuckerman, B. ^{[1
,2
]}

Koester, D. ^{[3
]}

Melis, C. ^{[1
,2
]}

Hansen, Brad M. ^{[1
,2
]}

Jura, M. ^{[1
,2
]}

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Ctr Astrobiol, Los Angeles, CA 90095 USA

[3] Univ Kiel, Inst Theoret Phys & Astrophys, D-24098 Kiel, Germany

来源：

ASTROPHYSICAL JOURNAL | 2007年 / 671卷 / 01期

关键词：

planetary systems; stars : abundances; white dwarfs;

D O I：

10.1086/522223

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the relative abundances of 17 elements in the atmosphere of the white dwarf star GD 362, material that, very probably, was contained previously in a large asteroid or asteroids with composition similar to the Earth-Moon system. The asteroid may have once been part of a larger parent body not unlike one of the terrestrial planets of our solar system.

引用

页码：872 / 877

页数：6

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