Analysis of the light curve of the eclipsing close binary system HD 149779

Details Analysis of the light curve of the eclipsing close binary system HD 149779 Analysis of the light curve of the eclipsing close binary system HD 149779

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...167...53v&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 167, no. 1, Oct. 1986, p. 53-60.

Astronomy and Astrophysics

Astrophysics

2

Eclipsing Binary Stars, Light Curve, Stellar Spectrophotometry, Ubv Spectra, Fourier Series, Frequency Response, Least Squares Method, Phase Diagrams

Scientific paper

uvby photometric observations of the B2 IV star HD 149779 are analysed. The star is variable with a light range of 0m.26 in V and a period of 1d.27. The variability is due to eclipses, and an analysis of the light curves by the method of differential corrections, using the model of Wilson-Devinney, reveals that HD 149779 consists of two nearly identical components almost filling their Roche lobes. The observed Strömgren indices of HD 149779 suggest a spectral type somewhat earlier than B2, probably B1.

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