Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915106g&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #151.06; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We present here the photometric light curve analysis of the eclipsing binary star BX Dra. The eclipsing binary star BX Dra was observed by Jerry Gunn and Brian Hakes using the Jubilee observatory near Peoria, Illinois and the Meade LX 2000 Hanna City Robotic Telescope and a CCD photometer at Hanna City, Illinois. The data spans over nine nights in 1997 in B and V band-pass filters. We obtained a revised orbital period of 0.579097 days from 15 eclipsing minima. The published spectral classification is A3. The 1993 version of the Wislon-devinney model gave the photometric solutions. The adopted solution indicates that BX Dra is W UMa type contact binary. The mass ratio, q = (m2 /m1, where star 1 eclipses at the primary minimum) = 0.26 suggest that BX Dra is a W UMA system with A-type configuration. Generally contact systems of spectral type A3 have periods ranging from 0.4 to 0.6 days. BX Dra has considerably longer periods and thus appears to be an evolved contact with case B mass transfer. We recommend spectroscopic study of this system.
Goderya Shaukat N.
Sykes T.
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