Isolated Magnetic White Dwarf Stars: A Search for Low Fields and Offset Dipole Models for High Fields

Details Isolated Magnetic White Dwarf Stars: A Search for Low Fields and Offset Dipole Models for High Fields Isolated Magnetic White Dwarf Stars: A Search for Low Fields and Offset Dipole Models for High Fields

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...185.9004p&link_type=abstract

American Astronomical Society, 185th AAS Meeting, #90.04; Bulletin of the American Astronomical Society, Vol. 26, p.1470

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The magnetic field evidently survives stellar evolution through to the white dwarf stage, but this is not well understood. With the aid of circular spectropolarimetry, the understanding of the white dwarf magnetic field is improving. The work presented here consists of two projects. The first is a survey of 51 isolated DC white dwarf stars searching for magnetic field strengths > 5*E(5) G. The survey is not yet complete, however, several objects have proven interesting, for example G 183-35 has a magnetic field of ~ 7times 10(6) G and G 158-45 (LHS 1044) shows evidence of rotation. The second project consists of running the magnetic white dwarf modelling code of S. Jordan of the University of Kiel to compare models of circular polarization and flux spectra to observational data of G 99-47, G 227-35, and KUV 813-14. All three stars are best fit with offset dipole or dipole+quadrupole fields.

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