Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..94..159s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 94, no. 1, July 1983, p. 159-163.
Astronomy and Astrophysics
Astrophysics
11
A Stars, Magnetic Variations, Peculiar Stars, Stellar Magnetic Fields, Astrophysics, Precession, Radial Velocity
Scientific paper
The magnetic field of HR 465 varies with a period of 23.3 yr. The number and intensity of the absorption lines show their extrema at the times of the cross-over points of the magnetic field in contrast to the phase relation of these quantities known for most short-time magnetic Ap stars. Apart from the variations produced by the binary motion no further general velocity changes were found. The radial velocity determined by lines of the neutral elements differ somewhat significantly from those of the ionized elements. The interpretation causes difficulties in all discussed models; a precession model seems to be a little more favourable than a rigid-rotator or alternating dynamo model.
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