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Time-series photometric spot modeling. I - Parameter study and application to HD 17433 = VY ArietisNew UBVRI photometry of the active chromosphere binary HD 17433 (VY) Ari from 1987 through 1991 is presented, and the long-term and short-term spot behavior is studied. A 0.2 mag variation of the mean brightness and a maximum wave amplitude of up to 0.4 mag in 1988 are found. The newly measured photometric period of 16.42 d suggests asynchronous rotation of the primary component by about 30 percent.
Document ID
19930059236
Document Type
Reprint (Version printed in journal)
Authors
Strassmeier, K. G. (Wien, Univ. Vienna, Austria)
Bopp, B. W. (Toledo Univ. OH, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1992
Publication Information
Publication: Astronomy and Astrophysics
Volume: 259
Issue: 1
ISSN: 0004-6361
Subject Category
ASTROPHYSICS
Funding Number(s)
PROJECT: FFWF PROJECT P7993-PHY
Distribution Limits
Public
Copyright
Other