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Ultraviolet and optical variability of RY TauriUltraviolet and optical observations of the T Tauri star RY Tau were analyzed. They show evidence for strong variability over 1985 to 1986. High dispersion IUE observations of the Mg II emission line profiles show significant changes in the wind of RY Tau, with the wind absorption almost disappearing on 1986 March 20. The behavior of the emission line flux variability when compared to the optical light curve shows evidence for changes in circumstellar extinction and changes in starspot/plage distribution on the visible hemisphere of the star.
Document ID
19870009757
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brown, A. (Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Linsky, J. L. (Joint Inst. for Lab. Astrophysics Boulder, CO, United States)
Drake, S. A. (Systems and Applied Sciences Corp. Lanham, Md., United States)
Herbst, W. (Van Vleck Observatory Middletown, Conn., United States)
Date Acquired
September 5, 2013
Publication Date
September 1, 1986
Publication Information
Publication: ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE
Subject Category
Astronomy
Accession Number
87N19190
Funding Number(s)
CONTRACT_GRANT: NAS5-26409
CONTRACT_GRANT: NAG5-82
Distribution Limits
Public
Copyright
Other

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