Carbon Deficiency in Externally Polluted White Dwarfs: Evidence for Accretion of Asteroids
Carbon Deficiency in Externally Polluted White Dwarfs: Evidence for Accretion of Asteroids
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外部污染的白矮星的碳缺乏：小行星吸积的证据
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
M. Jura
中科院分区：
文献类型：
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作者：
M. Jura
现有测定表明，在三颗似乎受到外部污染的白矮星的大气中，n(C)/n(Fe) 比太阳光低 10 倍以上。如果恒星吸积了星际物质，这些结果就不容易解释，我们将这些测量结果重新解释为这些恒星吸积了具有球粒状成分的小行星的证据。
Existing determinations show that n(C)/n(Fe) is more than a factor of 10 below solar in the atmospheres of three white dwarfs that appear to be externally polluted. These results are not easily explained if the stars have accreted interstellar matter, and we reinterpret these measurements as evidence that these stars have accreted asteroids with a chondritic composition.