White dwarf stars with carbon atmospheres

P. Dufour (), J. Liebert, G. Fontaine and N. Behara
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P. Dufour: University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721, USA
J. Liebert: University of Arizona, 933 North Cherry Avenue, Tucson, Arizona 85721, USA
G. Fontaine: Université de Montréal, CP 6128, Succursal Centre-Ville, Montréal, QC H3C 3J7, Canada
N. Behara: CIFIST, GEPI, Observatoire de Paris-Meudon, 92195, France

Nature, 2007, vol. 450, issue 7169, 522-524

Abstract: Carbon copies White dwarf stars are an endpoint of stellar evolution for some smaller stars. They come in two forms as a rule, with either hydrogen- or helium-rich atmospheres. The discovery of white dwarfs with atmospheres primarily composed of carbon, with little or no hydrogen or helium, is therefore unexpected. Though quite rare, this new type of star appears to represent an alternative route for stellar evolution.

Date: 2007
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DOI: 10.1038/nature06318

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