On the nature of the magnetic DB white dwarfs
We use recent calculations of the Zeeman splitting of neutral helium lines and atmospheric models to investigate the properties of the magnetic DB white dwarfs in the field range 10-1000 MG. We confirm that GD 229 exhibits spectroscopic signatures indicative of neutral helium in a magnetic field of ∼500 MG, and argue that HE 1043-0502 may also be helium rich with an even higher field of ∼750 MG. The dominant features in the phase-averaged spectrum of the polarized magnetic white dwarf HE...[Show more]
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|Source:||Monthly Notices of the Royal Astronomical Society|
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