Photoelectric photometry of the early-type semi-detached binary UW Orionis

Details Photoelectric photometry of the early-type semi-detached binary UW Orionis Photoelectric photometry of the early-type semi-detached binary UW Orionis

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990acasn..31....7z&link_type=abstract

(Acta Astronomica Sinica, vol. 31, no. 1, 1990, p. 7-14) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 14, Sept. 199

Astronomy and Astrophysics

Astrophysics

2

Astronomical Photometry, Early Stars, Eclipsing Binary Stars, Electrophotometry, Light Curve

Scientific paper

A photoelectric light curve of UW Ori is given along with a new epoch formula. A preliminary photometric solution was obtained using the Wilson-Devinney method of light curve synthesis. The results show that it is an early-type, almost contact, semidetached binary of large mass, with a mass ratio 0.513. If the large mass component is a zero age main sequence star, then the small mass component is no longer such. The O-C in the time of minimum suggests an increasing period.

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