Magnetism of the He-weak star HR 2949

Magnetism of the He-weak star HR 2949

A magnetic field and rotational line profile variability (lpv) is found in the He-weak star HR 2949. The field measured from metallic lines varies in a clearly non-sinusoidal way, and shows a phase lag relative to the morphologically similar He i equivalent width variations. The surface abundance pa...

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Veröffentlicht in:Proceedings of the International Astronomical Union 2010-07, Vol.6 (S272), p.210-211
Hauptverfasser: Rivinius, Thomas, Wade, Gregg A., Townsend, Richard H. D., Shultz, Matthew, Grunhut, Jason H., Stahl, Otmar
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Contributed Papers
Magnetic fields
Spectrum analysis
Star & galaxy formation
Stars & galaxies
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Zusammenfassung:A magnetic field and rotational line profile variability (lpv) is found in the He-weak star HR 2949. The field measured from metallic lines varies in a clearly non-sinusoidal way, and shows a phase lag relative to the morphologically similar He i equivalent width variations. The surface abundance patterns are strong and complex, and visible even in the hydrogen lines.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921311010386