Abstract
Previous studies of the brightness of Vega ( a Lyrae ) by Guthnick and Prager (1918) and by Fath (1935) have indicated that this star is a variable of small amplitude. In particular, the observations made by Fath at the Lick Observatory on three nights in 1933 and 1934 indicated light variations as large as 0^04. Indeed, simultaneous radial velocity observations seemed to suggest a rough correlation between brightness and radial velocity in the sense that maximum brightness corresponded with maximum negative radial velocity. The total amplitude of the radial velocity change was roughly 2 km/sec. An examination of Fath's plots of the brightness of Vega against time suggests a periodicity of between two and three hours. His observations were made in the blue with a
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.
