Three New Magnetic White Dwarf Stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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18

Polarization, Stars: Magnetic Fields, Stars: White Dwarfs

Scientific paper

The discovery of strong magnetic fields on three isolated white dwarf stars, G111-49, G183-35, and G256-7, is reported. Effective field strengths of +6.8 +/- 0.5 MG (1 MG = 106 G) in G183-35, +4.9 +/- 0.5 MG in G256-7, and approximately -220 MG in G111-49 were measured with the aid of circular spectropolarimetry. These stars, none of which were ever part of previous magnetic field searches, were found as part of a polarization survey of DC white dwarf stars in search of magnetic fields greater than 500 kG.

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