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| Paper: |
Model Atmosphere Analysis of the Magnetic Field in Cool, Hydrogen-line (DA) White Dwarfs |
| Volume: |
493, 19th European Workshop on White Dwarfs |
| Page: |
53 |
| Authors: |
Rolland, B.; Bergeron, P. |
| Abstract: |
We present a detailed model atmosphere analysis of the strength and
geometry of the magnetic field in cool, hydrogen-line (DA) white
dwarfs using offset dipole models. We show in particular that most stars
in our sample can only be accounted for if they are unresolved double
white dwarf systems, one of which even consists of two magnetic DA
stars. Our results also suggest that the magnetic field in these cool
white dwarfs cannot have a fossil origin, and must be somehow
generated by some mechanism that remains unexplained at this stage. |
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