Photometric Study of the Near Critical Contact System, GSC 3355 0394

Details Photometric Study of the Near Critical Contact System, GSC 3355 0394 Photometric Study of the Near Critical Contact System, GSC 3355 0394

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aj....140.1150s&link_type=abstract

The Astronomical Journal, Volume 140, Issue 5, pp. 1150-1157 (2010).

Astronomy and Astrophysics

Astronomy

1

Binaries: Close, Binaries: Eclipsing, Stars: Evolution, Stars: Individual: Gsc 3355 0394

Scientific paper

GSC 3355 0394 has an EB-type light curve, which is dominated by hot and cool spot activities. It displays night-to-night variations in light-curve shapes. The period study yields six new times of minimum light and the first precision ephemeris, HJD T min I = 2, 454, 408.9547 ± 0.0017 + 0.4621603 ± 0.0000008d*E. VRcIc standard magnitudes are presented. BVRI Wilson synthetic light-curve solutions are calculated for both a Mode 4 (V1010 Oph-type, semidetached, more massive component filling its Roche lobe) configuration and a Mode 3, contact configuration (fill-out 100% or critical contact). The critical contact is the lowest residual solution. Four major spot regions are needed to model this binary, at least one is evidently a stream spot.

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