Magnetism of the He-weak star HR2949

Details Magnetism of the He-weak star HR2949 Magnetism of the He-weak star HR2949

2010-09-17

arxiv.org/abs/1009.3509v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

2 pages, 1 figure, IAUS 272 - Active OB Stars: Structure, Evolution, Mass Loss and Critical Limits

Scientific paper

A magnetic field and rotational line profile variability (lpv) is found in
the He-weak star HR2949. The field measured from metallic lines varies in a
clearly non-sinusoidal way, and shows a phase lag relative to the
morphologically similar HeI equivalent width variations. The surface abundance
patterns are strong and complex, and visible even in the hydrogen lines.

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