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Magnetism of the He-weak star HR 2949†

Published online by Cambridge University Press:  12 July 2011

Thomas Rivinius ,
Gregg A. Wade ,
Richard H. D. Townsend ,
Matthew Shultz ,
Jason H. Grunhut  and
Otmar Stahl
Thomas Rivinius
Affiliation:
ESO, Chile
Gregg A. Wade
Affiliation:
RMC, Canada
Richard H. D. Townsend
Affiliation:
UW Madison, USA
Matthew Shultz
Affiliation:
RMC, Canada
Jason H. Grunhut
Affiliation:
RMC, Canada
Otmar Stahl
Affiliation:
LSW/ZAH Heidelberg, Germany
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Abstract

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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.

Keywords

stars: binariesstars: early-typestars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 210 - 211
Copyright
Copyright © International Astronomical Union 2011

References

Koen, C. & Eyer, L. 2002, MNRAS, 331, 45CrossRefGoogle Scholar
Rivinius, T., Stahl, O., Baade, D., & Kaufer, A. 2003, IBVS 5397Google Scholar