UBV photoelectric photometry of the 1976-1978 eclipse of VV Cephei

Details UBV photoelectric photometry of the 1976-1978 eclipse of VV Cephei UBV photoelectric photometry of the 1976-1978 eclipse of VV Cephei

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987acaps...7..120h&link_type=abstract

(Acta Astrophysica Sinica, vol. 7, 1987, p. 120-128) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 11, Sept. 1987, p

Astronomy and Astrophysics

Astrophysics

Eclipsing Binary Stars, Electrophotometry, M Stars, Stellar Spectrophotometry, Supergiant Stars, Ubv Spectra, Astronomical Catalogs, Optical Thickness, Stellar Atmospheres, Stellar Color

Scientific paper

This paper presents the result of UBV photoelectric photometry of the 1976 - 1978 eclipse of VV Cephei. The contact times are determined on the base of B-V and U-B curves. The epoch of the mid-eclipse is JD 2443361 which agrees with the predicted one. The unequal depths of falling and rising branches of the colour curves can be explained by a gas stream from the M-type supergiant component. The radius of the M-type supergiant is about 1860 R_sun; with atmospheric tickness of 450 R_sun;.

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