Abstract
ABSTRACT Photoelectric spectrophotometry of the Ca is K emission line in the flare star BY Dra during 1975 shows no evidence for variability over the 3d8 rotation period. Apparently the K-line emission is produced uniformly over the stellar surface, and is not localized in plage regions. Concurrent variations in (B - V) and (b- y) confirm that the color changes seen over the photometric cycle are a continuum effect, rather than a result of varying emission line flux. Key words: BY Draconis variables - variable stars
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Publications of the Astronomical Society of the Pacific
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
