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- W4288278696 abstract "We report the discovery of a new magnetic DA white dwarf (WD), WD0011-721, which is located within the very important 20pc volume-limited sample of the closest WDs to the Sun. This star has a mean field modulus <|B|> of 343 kG, and from the polarisation signal we deduce a line-of-sight field component of 75 kG. The magnetic field is sufficiently weak to have escaped detection in classification spectra. We then present a preliminary exploration of the data concerning the frequency of such fields among WDs with hydrogen-rich atmospheres (DA stars). We find that 20 +- 5% of the DA WDs in this volume have magnetic fields, mostly weaker than 1 MG. Unlike the slow field decay found among the magnetic Bp stars of the upper main sequence, the WDs in this sample show no evidence of magnetic field or flux changes over several Gyr." @default.
- W4288278696 created "2022-07-28" @default.
- W4288278696 creator A5014887556 @default.
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- W4288278696 date "2019-07-26" @default.
- W4288278696 modified "2023-10-02" @default.
- W4288278696 title "A new weak-field magnetic DA white dwarf in the local 20 pc volume" @default.
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- W4288278696 doi "https://doi.org/10.1051/0004-6361/201936009" @default.
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