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Paper: White Dwarfs with Carbon Dominated Atmosphere: New Observations and Analysis
Volume: 469, 18th European White Dwarf Workshop (EUROWD12)
Page: 167
Authors: Dufour, P.; Vornanen, T.; Bergeron, P.; Fontaine, Berdyugin, A.
Abstract: White dwarf stars with a surface composition completely dominated by carbon and oxygen, the so-called Hot DQs, are found to be magnetic in an extremely high proportion. Here we present new high-resolution spectroscopic observations with the VLT and try to determine whether all Hot DQs could be magnetic at some level. We also discuss further the idea that most, if not all, white dwarfs showing either C I or C II atomic absorption lines in the optical may form a continuous sequence of massive white dwarf stars.
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