ASAS J071829-0336.7: Short-Period End for Contact Binaries Redefined

Details ASAS J071829-0336.7: Short-Period End for Contact Binaries Redefined ASAS J071829-0336.7: Short-Period End for Contact Binaries Redefined

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ibvs.5886....1p&link_type=abstract

Information Bulletin on Variable Stars, 5886, 1.

Physics

3

Eclipsing Binaries, Photometry

Scientific paper

CCD photometry at the Star'a Lesn'a Observatory revealed that two extremely short-period ASAS variables are genuine contact binaries. While J071829-0336.7 redefines the short-period end to P = 0.211249 days, the true orbital period of J113031-0101.9, P = 0.270961 days, is substantially longer than given in the ASAS database. The light curve of the latter system indicates mass ratio of about q = 0.15 typical for A-type systems.

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