Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.128..369j&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 128, no. 2, Dec. 1986, p. 369-375. Research supported by the University of
Astronomy and Astrophysics
Astrophysics
18
Astronomical Photometry, Eclipsing Binary Stars, Light Curve, Starspots, Stellar Color, Stellar Magnitude
Scientific paper
Photometric observations of eclipsing binary star XY UMa have been presented. The light curve analysis have been carried out on two colours, B and V, by inferring as much information as possible about the star from other published data and then synthesizing light curves and comparing them with our own observations. The light fluctuations of outside eclipses caused by intrinsic light variation of primary component have been obtained by deconvolution of the theoretical light curve from observed one. It has been shown that the intrinsic light variation of primary component can be interpreted in terms of cool star-spot covering 8 percent of the stellar photosphere. Finally, the significance of star-spot has been discussed.
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