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A photometric study of BO Canum Venaticorum
Author(s) -
Albayrak B.,
Müyesseroğlu Z.,
Özdemir S.
Publication year - 2001
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/1521-3994(200106)322:2<125::aid-asna125>3.0.co;2-f
Subject(s) - physics , ephemeris , astrophysics , light curve , occultation , orbital period , maxima and minima , photometry (optics) , astronomy , stars , mathematics , mathematical analysis , satellite
Photometric BV light curves of BO CVn obtained in 1992 and new times of minima are presented. The primary minimum shows a transit, whereas the secondary minimum, shows an occultation. The system may be classified as an A‐type W UMa system. A complete study of minima allows one to detect a possibly increasing period by about 0.037 s/yr. This indicates that the conservative mass transfer rate from the less massive component to the more massive one is 1.57 10 —10 M ⊙ /yr. Because of the variable period, the new ephemeris is determined for future observations. Using the Wilson‐Devinney code a simultaneous solution of the B and V light curves is also performed. The analysis shows that the system is in a contact configuration with q = 0.205 ± 0.001 and fillout factor (f) = 0.18, T 1 = 7240 K (fixed) , T 2 = 7150± 10 K . The high orbital inclination i = 87°.54 ± 0.26 was con firmed by photometric observations of the secondary minimum.