Two white dwarfs with oxygen-rich atmospheres

B. T. Gänsicke, D. Koester, J. Girven, Thomas R. Marsh, D. Steeghs

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Abstract

Stars with masses ranging from 7 to 10 times the mass of the Sun end their lives either as massive white dwarfs or weak type II supernovae, but there are only limited observational constraints on either evolutionary channel. Here we report the detection of two white dwarfs with large photospheric oxygen abundances, implying that they are bare oxygen-neon cores and that they may have descended from the most massive progenitors that avoid core collapse.

Original languageEnglish
Pages (from-to)188-190
Number of pages3
JournalScience
Volume327
Issue number5962
DOIs
Publication statusPublished - 2010
Externally publishedYes

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