UBVR-photometry of HDE 245770 = A0535 + 26 from 1986-1989

Details UBVR-photometry of HDE 245770 = A0535 + 26 from 1986-1989 UBVR-photometry of HDE 245770 = A0535 + 26 from 1986-1989

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pazh...16.1099b&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 16, Dec. 1990, p. 1099-1106. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

3

Astronomical Photometry, Binary Stars, Stellar Luminosity, X Ray Stars, Accretion Disks, Annual Variations, Astronomical Models, Electron Density (Concentration), Ubv Spectra

Scientific paper

Results of UBVR-photometry of the optical component of the x-ray binary A0535 + 26 from 1986-1989 are given. Photometric characteristics of the object are compared with those of the previous period and an analysis of the brightness curve is made. Excess radiation, i.e. that not connected with the Be-star, is determined, and its spectral distribution analyzed. In the framework of the accretion disk model the electron density in the radiating region is estimated. Observational features that appear to conflict with this model are indicated.

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