Photometric study of the eclipsing binary EG CEP

Details Photometric study of the eclipsing binary EG CEP Photometric study of the eclipsing binary EG CEP

Apr 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998coska..28...51c&link_type=abstract

Contributions of the Astronomical Observatory Skalnate Pleso, vol. 28, no. 1, p. 51-62.

Astronomy and Astrophysics

Astronomy

7

Binaries, Photometry

Scientific paper

New photoelectric B and V observations of EG Cep were taken and 11 new minima times were determined. They confirm the long-term increase of the orbital period. The light-curve analysis shows that the system is semi-detached. Mass transfer from the less to the more massive component is responsible for the observed orbital period increase. Variations in the transferred matter projected onto the surface of the components are responsible for the colour dependent variable shift of the minima. This effect, more pronounced in the secondary minima, explains also the disagreement of the limb-darkening coefficient of the secondary component with the theoretical value.

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