Photometric observations of the binary system V350 Lacertae

Details Photometric observations of the binary system V350 Lacertae Photometric observations of the binary system V350 Lacertae

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.188..151d&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 188, no. 1, Feb. 1992, p. 151-158. Research supported by Ankara University

Astronomy and Astrophysics

Astrophysics

2

Binary Stars, Late Stars, Light Curve, Stellar Spectrophotometry, Ubv Spectra, Calcium, Fourier Series, Hydrogen, Light Elements, Telescopes

Scientific paper

Differential UBV observations of the small amplitude (0.12 mag in V) single-lined active binary V350 Lac are presented. It was observed that the light minima occur in conjunction time. A shift of the light curve (0.05 in orbital phase) toward lower phases could be due to a small error in the light elements. The primary minimum is about 0.04 mag deeper than the secondary. It was shown that different depths of two light minima are not produced by the reflection effect but due primarily to gravity darkening on the tidally elongated and synchronously rotating visible component. An O'Connel effect observed as the brighter primary maximum could be an indication of starspot activity or gas streaming between the components.

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