Other
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasp..117.1394k&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 117, Issue 838, pp. 1394-1402.
Other
3
Stars: Variables: Other, Stars: Binaries: Eclipsing, Techniques: Photometric, Stars: Individual (Lz Herculis), Stars: Individual (2Mass 17500367+2928020)
Scientific paper
We present BV photometric results of the variable star LZ Her. Frolov & Irkaev classified it as a field SX Phe-type pulsating star, but our observations clearly show that LZ Her is not an SX Phe star, but rather a W UMa-type eclipsing binary, as reported by Garrido et al. The orbital period is derived to be 0.33173646 days by combining our data with that in the literature. The eclipsing light-curve solution from the Wilson-Devinney code shows that LZ Her belongs to the W subgroup of W UMa stars; the primary component is less massive and hotter, with a spectral type of F9-G0, and the secondary is more massive and cooler, with a spectral type G5-G6. The spectral types were estimated from the photometric light-curve solution. Asymmetric light curves could be explained by assuming a cool spot on the secondary star. In the observing field of LZ Her, we found a new eclipsing binary, 2MASS 17500367+2928020, with an orbital period of 0.3056 days.
Kang Yong Beom
Kim Chul-Hee
Kim Seung-Lee
Koo Jae-Rim
Lee Chung Uk
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