Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985acaps...5...36l&link_type=abstract
(Acta Astrophysica Sinica, vol. 5, no. 1, 1985, p. 36-43) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 9, June 1985
Astronomy and Astrophysics
Astrophysics
Binary Stars, Stellar Activity, Stellar Atmospheres, Stellar Spectra, Radial Velocity, Spectral Line Width, Stellar Models, Variable Stars
Scientific paper
The spectrum of 44i Boo was observed in 1981 March and in 1983 March. It is found that the equivalent widths of the Ca II K and Ca I 4227 A lines showed periodic variations with different phases, and that the profile of the H-alpha line also varied in step. A preliminary analysis is made based on the observations and recent IUE data, and a simple model atmosphere with stellar activity of 44i Boo (B) is proposed.
Cha Guang-Wei
liu Xian-Feng
Peng Song-Quan
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