Period changes and light curve analysis of eclipsing binary AB Andromedae

Details Period changes and light curve analysis of eclipsing binary AB Andromedae Period changes and light curve analysis of eclipsing binary AB Andromedae

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap%26ss.317...71h&link_type=abstract

Astrophysics and Space Science, Volume 317, Issue 1-2, pp. 71-77

Astronomy and Astrophysics

Astrophysics

Ab And, Eclipsing Binary, Period Variations

Scientific paper

BV photometry of close binary star AB And in two observational seasons have been presented. Updated O-C diagram analysis by Kalimeris method yielded the values of 0.0188 day and 0.0065 day as amplitudes of orbital period modulation with P mod1˜61 yr and P mod2˜34 yr as the modulation periodicities. Light curve analysis was carried out by W-D method and geometric and physical parameters of the components. Finally, the consequences of period changes have been discussed on the basis of light-time effect due to third body in the system and Applegate mechanism.

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