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MR Persei - A new rotating, spotted flare starSpectroscopy 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.
Document ID
19930032510
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Honeycutt, R. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Turner, G. W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Vesper, D. N.
(Indiana Univ. Bloomington, United States)
Schlegel, E. M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Astronomical Society of the Pacific, Publications
Volume: 104
Issue: 681
ISSN: 0004-6280
Subject Category
Astrophysics
Accession Number
93A16507
Distribution Limits
Public
Copyright
Other

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