Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-01-22
J.Phys.Conf.Ser.172:012012,2009
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
6 pages, 2 figures, to appear in Journal of Physics Conference Proceedings for the 16th European White Dwarf Workshop
Scientific paper
10.1088/1742-6596/172/1/012012
Recently, Dufour et al. (2007) reported the unexpected discovery that a few white dwarfs found in the Sloan Digital Sky Survey had an atmosphere dominated by carbon with little or no trace of hydrogen and helium. Here we present a progress report on these new objects based on new high signal-to-noise follow-up spectroscopic observations obtained at the 6.5m MMT telescope on Mount Hopkins, Arizona.
Dufour Patrick
Fontaine Gérard
Liebert James
Sukhbold Tuguldur
Swift Brandon
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