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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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