Chapter

The early-type magnetic stars

Leon Mestel

in Stellar Magnetism

Published in print February 2012 | ISBN: 9780199641741
Published online May 2012 | e-ISBN: 9780191738609 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199641741.003.0009

Series: International Series of Monographs on Physics

                   The early-type magnetic stars

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Chapters 4 and 5 discussed various aspects of the interaction between the magnetic field and the thermal-gravitational-rotational fields in different stellar domains. This chapter broadens the discussion with an eye to the understanding of those early-type stars, numbering over 200, which show surface magnetic fields, detectable through the Zeeman effect. The discussion covers the stability of large-scale stellar magnetic fields; the dynamics of the oblique rotator and the Eulerian nutation and the consequent internal motions; non-uniform rotation and the oblique rotator model; models of rotating magnetic stars; magnetic torques acting on the oblique rotator and spin-down, spin-up, and changes in obliquity; the origin of the field; abundance anomalies; and the rapidly oscillating Ap (roAp) phenomenon.

Keywords: magnetic fields; thermal-gravitational-rotational fields; early-type stars; Zeeman effect; oblique rotator; Eulerian nutation; magnetic torque; rapidly oscillating Ap phenomenon

Chapter.  38563 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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