Four-colour photometry of eclipsing binaries. I. HS Hya, light curves, photometric elements, and determination of helium content.
Abstract
Summary. Photometric elements are derived for the eclipsing binary HS Hya. Using published spectroscopic elements the absolute dimensions are derived. A comparison with new stellar model calculations was carried out and the helium content of HS Hya was found to be Y=0.22+0.04. Key words: eclipsing binary - light curves - photometric elements and helium content
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- September 1975
- Bibcode:
- 1975A&A....42..303G