DD Mon BV light curves (Qian+ 1997)

Details DD Mon BV light curves (Qian+ 1997) DD Mon BV light curves (Qian+ 1997)

Apr 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..41250475q&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/125/475. Originally published in: 1997A&AS..125..475Q

Computer Science

Binaries: Eclipsing, Photometry

Scientific paper

New BV light curves of the short-period eclipsing binary system DD Mon have been obtained. Light-curve variability is seen in both B and V bands as compared with the light curves obtained in 1986 by Yamasaki et al. (1990AJ.....99.1218Y). The light curves are analyzed by using Wilson-Devinney's synthetic light-curve program, and the present photometric solution reveals that DD Mon is a near-contact binary with the secondary component filling the Roche lobe. Combined with Yamasaki et al.'s (1990AJ.....99.1218Y) spectroscopic results, absolute quantities of DD Mon are derived: mass of the primary M1=1.05+/-0.08M&sun;, mass of the secondary M2=0.47+/-0.04M&sun;, radius of the primary R1=1.36+/-0.04R&sun;, radius of the secondary R2=1.03+/-0.03R&sun;. These results show that the components of DD Mon have evolved away from the ZAMS and through a mass-transfer process to the present semi-detached state. The variation in shape of the light curve may be caused by the evolution of the system and the activity of dark spots. (2 data files).

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