Are AP stars magnetic balloons

Details Are AP stars magnetic balloons Are AP stars magnetic balloons

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254..196h&link_type=abstract

Astrophysical Journal, Part 1, vol. 254, Mar. 1, 1982, p. 196-202.

Astronomy and Astrophysics

Astrophysics

11

Magnetic Stars, Peculiar Stars, Stellar Envelopes, Stellar Magnetic Fields, Stellar Models, Stellar Structure, Hertzsprung-Russell Diagram, Main Sequence Stars, Photosphere, Star Clusters, Stellar Evolution

Scientific paper

A study of the effect on the structure of upper-main sequence envelopes of a large, global magnetic field has determined that, for an envelope model incorporating a 1000-Gauss field, the additional B-squared/8(pi) magnetic pressure component may expand the photosphere of a 2.0-solar mass star by 20%. The implications of this effect for Ap stars, and for the position of the main sequence in cluster H-R diagrams, are discussed. The relative importance of convection in such expanded stars is also considered.

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