Magnetism of the He-weak star HR2949

Th. Rivinius; G. Wade; R. H. D. Townsend; M. Shultz; J. Grunhut; O. Stahl; the MiMeS Collaboration

doi:10.1017/S1743921311010386

Magnetism of the He-weak star HR2949

Solar and Stellar Astrophysics 2015-05-20 v1

Authors: Th. Rivinius , G. Wade , R. H. D. Townsend , M. Shultz , J. Grunhut , O. Stahl , the MiMeS Collaboration

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Abstract

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.

Keywords

magnetic field helium-weak star rotational line profile variability surface abundance patterns HR2949

Cite

@article{arxiv.1009.3509,
  title  = {Magnetism of the He-weak star HR2949},
  author = {Th. Rivinius and G. Wade and R. H. D. Townsend and M. Shultz and J. Grunhut and O. Stahl and the MiMeS Collaboration},
  journal= {arXiv preprint arXiv:1009.3509},
  year   = {2015}
}

Comments

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

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