Orbital period changes and photometric study of contact binary system AK Her

Details Orbital period changes and photometric study of contact binary system AK Her Orbital period changes and photometric study of contact binary system AK Her

Apr 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010newa...15..339s&link_type=abstract

New Astronomy, Volume 15, Issue 4, p. 339-342.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

UBV photometry of the W UMa type eclipsing binary AK Her is presented. Light curves analysis were carried out using W-D code to obtain physical parameters of both components. The updated O-C diagram analysis yielded the values of P=62.61±0.01 years, P=25.05±0.01 years and P=13.91±0.01 years as the modulation periodicities and the values of 2.01×10-8±2.1×10-9 days, 8.9×10-9±2.1×10-9 days and 8.3×10-9±2.1×10-9 days as amplitude of orbital period modulation respectively. The consequences of these period changes are discussed on the basis of third body and magnetic activity.

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