Weak magnetic fields in white dwarfs and their direct progenitors?

Alternative titleLow magnetic fields in white dwarfs and their direct progenitors?
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TypeArticle
Journal titleAstrophysics
Article numberarXiv:1210.3987
Subjectsolar and stellar astrophysics
AbstractWe have carried out a re-analysis of polarimetric data of central stars of planetary nebulae, hot subdwarfs, and white dwarfs taken with FORS1 (FOcal Reducer and low dispersion Spectrograph) on the VLT (Very Large Telescope), and added a large number of new observations in order to increase the sample. A careful analysis of the observations using only one wavelength calibration for the polarimetrically analysed spectra and for all positions of the retarder plate of the spectrograph is crucial in order to avoid spurious signals. We find that the previous detections of magnetic fields in subdwarfs and central stars could not be confirmed while about 10% of the observed white dwarfs have magnetic fields at the kilogauss level.
Publication date
PublisherCornell University Library
Linkhttps://arxiv.org/abs/1210.3987
LanguageEnglish
AffiliationNRC Herzberg Astronomy and Astrophysics; National Research Council Canada
Peer reviewedNo
NPARC number23002108
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Record identifier71ca0672-5e10-495b-a85a-80538609ed42
Record created2017-08-22
Record modified2017-08-22
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