New Photometric Observations of sigma Ori E

Mary Oksala; Rich Townsend

New Photometric Observations of sigma Ori E

Astrophysics 2007-05-23 v1

Authors: Mary Oksala , Rich Townsend

Abstract

We present new UBVRI observations of the magnetic Bp star sigma Ori E. The basic features of the star's lightcurve have not changed since the previous monitoring by Hesser et al. (1977), indicating that the star's magnetosphere has remained stable over the past three decades. Interestingly, we find a rotation period that is slightly longer than in the Hesser et al. (1977) analysis, suggesting possible spindown of the star.

Keywords

sigma Ori E magnetic Bp star photometry lightcurve rotation period magnetosphere spindown

Cite

@article{arxiv.astro-ph/0511454,
  title  = {New Photometric Observations of sigma Ori E},
  author = {Mary Oksala and Rich Townsend},
  journal= {arXiv preprint arXiv:astro-ph/0511454},
  year   = {2007}
}

Comments

3 pages, 2 figures, to appear in "Active OB Stars: Laboratories for Stellar & Circumstellar Physics", ASP Conf. Ser. 2005, S. Stefl, S. P. Owocki & A. Okazaki, eds

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