Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..180s&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Feb. 1989, p. 180-188.
Astronomy and Astrophysics
Astronomy
6
Astronomical Photometry, Eclipsing Binary Stars, Light Curve, Roche Limit, Lyra Constellation, Stellar Spectra
Scientific paper
The eclipsing binary star RR Lep was observed on seven nights during December 1979 with the facilities at Cerro Tololo Inter-American Observatory. The observations covering eclipse portions of the light curve yielded two epochs of minimum light. These observations are apparently the first published photoelectric data to be reported on the system. A study of the period of the system indicates that it may have remained fairly constant for almost 50 years. The light curves, defined by 700 observations with the B filter and 699 with the V filter, indicate a very large temperature disparity between the components and they show a superluminous region between the phases of 0.1 and 0.26. Also, a sinusoidal light variation is found to be present in the light curve over half a cycle. The light curves are modeled with the Wilson-Devinney code. The preliminary solution indicates that RR Lep is a classical semidetached Algol system with an A-type primary and a K-type secondary which fills its Roche lobe.
Bookmyer Beverly B.
Faulkner Danny R.
Fuller Rita E.
Samec Ronald G.
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