The extraordinary magnetic variation of the helium-strong star HD 37776 - A quadrupole field configuration

Details The extraordinary magnetic variation of the helium-strong star HD 37776 - A quadrupole field configuration The extraordinary magnetic variation of the helium-strong star HD 37776 - A quadrupole field configuration

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...289l...9t&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 289, Feb. 1, 1985, p. L9-L13. Research supported by

Other

70

B Stars, Magnetic Field Configurations, Magnetic Stars, Periodic Variations, Quadrupoles, Stellar Magnetic Fields, Helium, Spectral Energy Distribution

Scientific paper

Extensive longitudinal magnetic field measurements of the helium-strong B star HD 37776 have been obtained. It is found that when these data are phased with a period of 1.538 days derived from helium line variations, an extraordinary double-wave magnetic curve results. It is argued that this curve is in fact the real magnetic curve of the star and that HD 37776 is therefore the first known star in which a quadrupole-like field geometry dominates the usual dipole found in other magnetic stars.

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