White Dwarfs with Carbon Dominated Atmoshpere: New Observations and Analysis



: Dufour P, Vornanen T, Bergeron P, Fontaine, Berdyugin A

: Krzesinski I, Stachowski G, Moskalik P, Bajan K

: 2013

: 18th European White Dwarf Workshop

: ASP Conference Series

: 469

: 167

: 978-1-58381-820-6

: 978-1-58381-821-3


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 CI or CII atomic absorption lines in the optical may form a continuos sequence of massive white stars.



Last updated on 2024-26-11 at 22:46