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MR Persei - A new rotating, spotted flare star (1992)

Vesper, D. N. ; Honeycutt, R. K. ; Schlegel, E. M. ; [et al.]

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Publication Date: 2011-08-24

Description: Spectroscopy and photometry are used to show that MR Persei, an object originally classified as a dwarf nova, is in fact a flare star. The automated CCD photometry consists of sequences of exposures within a single night as well as long-term photometry over a five-month interval. One sequence shows a 30-min flare, accompanied by post-flare 'dips'. A 0.2 mag variation with a period of about one-half day is also seen in this sequence. The long-term photometry is used to refine the period to 0.45483 d, which we attribute to the rotation of a spotted star. Evidence for membership of MR Per in the young Alpha Per cluster is considered, and found to be inconclusive.

Keywords: ASTROPHYSICS

Type: Astronomical Society of the Pacific, Publications (ISSN 0004-6280); 104; 681; p. 1039-1044.

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