The very strong and unusual magnetic field of the BP silicon star HD 133880

Details The very strong and unusual magnetic field of the BP silicon star HD 133880 The very strong and unusual magnetic field of the BP silicon star HD 133880

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...352l...5l&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 352, March 20, 1990, p. L5-L8. Research supported by NSERC.

Astronomy and Astrophysics

Astrophysics

31

A Stars, B Stars, Peculiar Stars, Stellar Magnetic Fields, Variable Stars, Astronomical Photometry, Magnetic Measurement, Silicon, Stellar Composition

Scientific paper

The Ap Si star HD 133880 is found to have a very nonsinusoidal magnetic field curve. It is argued that this star is one of a very small number of Ap stars that have predominantly nondipolar field geometries. One possible family of models that reproduces the observed magnetic curve may be found using a collinear dipole and quadrupole; these models suggest that the quadrupolar field component is at least 1.3 times larger than the dipolar component.

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