The BVRI Light Curves And Period Analysis Of The Beta Lyrae System XX Leonis

Details The BVRI Light Curves And Period Analysis Of The Beta Lyrae System XX Leonis The BVRI Light Curves And Period Analysis Of The Beta Lyrae System XX Leonis

2007-11-19

arxiv.org/abs/0711.2955v1

IAU Symp.240:127,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures, 2 tables, conference proceedings

Scientific paper

The contact eclipsing binary system XX Leonis (P = 0.97 days, sp A8) has been analysed using the PHOEBE programme, based on the Wilson Devinney code. The BVRI light curves were obtained during spring 2006 using the 20-cm telescope and ST-7 CCD detector. The effective temperature of the primary component determined from the photometric analysis is T=(7889+/-61)K, the inclination of the orbit is i=(89.98+/-2.45)deg and the photometric mass ratio q=(0.41+/-0.01). Also the third body hypothesis was suggested, based on the period analysis using 57 minimum times and resulting the period of the third body p3= (52.96+/-0.01)yr, amplitude A=(0.057+/-0.029)d and eccentricity e=(0.79+/-0.08) which gives the minimum mass m3,min=(3.6+/-0.8)M_sun.

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