V792 HER = HD 155638 - A totally eclipsing RS CVn binary

Details V792 HER = HD 155638 - A totally eclipsing RS CVn binary V792 HER = HD 155638 - A totally eclipsing RS CVn binary

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.182....1n&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 182, no. 1, Aug. 1991, p. 1-17.

Astronomy and Astrophysics

Astrophysics

5

Eclipsing Binary Stars, F Stars, G Stars, Light Curve, X Ray Sources, Interstellar Extinction, Radial Velocity, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

Photometric and radial velocity data of the totally eclipsing binary are reviewed to obtain the elements of the system and determine precise abundances of known elements. Using observational data from 1982-84, the orbital period and the wave period are identified, and the light curve is rectified in B and V for some data. Both stars are examined in terms of observational data to estimate the masses and the absolute dimensions of the system. The absolute elements of the system are determined by applying Kepler's Third Law to circular orbits. The distance to the system is 310 parsecs, and the stars are classified as F3V and K0III. HD 155638 is found to be a totally eclipsing RS CVn binary according to the definition by Hall (1976) with orbital and wave periods of 27.5348 d and 27.07 d respectively and a spot-migration period of 4.4 years.

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