Reanalysis of the light curve of ES Lib.
Abstract
Wood's model (1972) is used to reanalyze the photoelectric light curve of Bartolini et al. (1973) of the single-lined eclipsing binary ES Lib. The calculated photometric elements differed considerably from those computed by Bartolini; larger values were found for the orbital inclination angle, the unperturbed radius, and the fractional luminosities. For the adopted mass ratio equals 0.4, the primary hotter star appeared to fill its inner Lagrangian surface, whereas the K-type seemed to be detached. In view of the large sum of the fraction radii of the two components, ES Lib can be related to the contact systems, which pass through broken-contact phases (Robertson and Eggleton, 1977).
- Publication:
-
Astronomische Nachrichten
- Pub Date:
- 1981
- DOI:
- 10.1002/asna.19813020404
- Bibcode:
- 1981AN....302..187G
- Keywords:
-
- Eclipsing Binary Stars;
- Electrophotometry;
- Light Curve;
- Stellar Spectrophotometry;
- A Stars;
- Late Stars;
- Mass Ratios;
- Stellar Models;
- Astrophysics