The photometric behavior and orbital period of the system HDE 245770 = A 0535 + 26

Details The photometric behavior and orbital period of the system HDE 245770 = A 0535 + 26 The photometric behavior and orbital period of the system HDE 245770 = A 0535 + 26

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65.1196g&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, Nov.-Dec. 1988, p. 1196-1206. In Russian.

Astronomy and Astrophysics

Astronomy

8

Accretion Disks, Astronomical Photometry, B Stars, Neutron Stars, X Ray Sources, Infrared Spectra, Irregular Variable Stars, Light Curve, Spectral Energy Distribution, Visible Spectrum

Scientific paper

Results of photometric observations (1981 - 1985) are given for the transient X-ray source A 0535+26, whose optical component is the Be star HDE 245770. Analyzing the photometric data the authors deteced radiation of a disc of accreting matter that is gradually accumulated, precipitating afterwards on to the neutron star's surface. The latter leads to a X-ray flare. Physical parameters of the accreting accumulating disc are determined. The characteristic timescale of formation of such a disc is likely to be ≡1000 days.

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