UBV photometry of V839 Ophiuchi (Akalin, 1997)

Details UBV photometry of V839 Ophiuchi (Akalin, 1997) UBV photometry of V839 Ophiuchi (Akalin, 1997)

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997ycat..41250407a&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/125/407. Originally published in: 1997A&AS..125..407A

Computer Science

Binaries: Eclipsing, Photometry: Ubv

Scientific paper

A complete period variation analysis and new light curves of V839 Oph together with new ephemeris data are presented. The period variation was found to be dP/dt=3.1x10^-7d/yr. The period increament indicates that the conservative mass transfer rate from the less massive component to the more massive one is 6.5x10^-7Msun/yr. We fitted parabolic and we discuss the possible detection of sinusoidal curves to the (O-C) diagram and sinusoidal oscillations with period of about 20yr and semi-amplitude of 0.0065 day. A simultaneous solution of the B and V light curves was computed using the Wilson-Devinney synthetic light-curve code. The light curve solution indicates that the A-type W UMa-type system is in contact with a filling factor of ~39%. (2 data files).

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