Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg

Details Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg Orbital Period Changes and Long Term Luminosity Variation in Active Binary CG Cyg

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.304..157j&link_type=abstract

Astrophysics and Space Science, Volume 304, Issue 1-4, pp. 157-160

Astronomy and Astrophysics

Astrophysics

1

Cg Cyg, Eclipsing Binary, Period Variations

Scientific paper

UBV photometric observations of the active binary star CG Cygnus have been presented and analyzed to obtain absolute parameters of both components. Updated O-C diagram analysis by Kalimeris method yielded the values of 1.55× 10-6 day and 1.4×10-7day as the amplitudes of orbital period modulation, and Pmod1˜ 52.3 yr and Pmod2 ˜ 15.9 yr as the modulation periodicities. Finally, the consequences of period changes have been discussed on the basis of Applegate mechanism.

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