Photometry and discussion of the classical algol systems U SGE and U CEP

Details Photometry and discussion of the classical algol systems U SGE and U CEP Photometry and discussion of the classical algol systems U SGE and U CEP

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.125..219k&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 125, no. 2, Aug. 1986, p. 219-242.

Astronomy and Astrophysics

Astrophysics

13

Astronomical Photometry, Eclipsing Binary Stars, Curve Fitting, H Beta Line, Stellar Mass Accretion, Stellar Structure

Scientific paper

The classical Algol-type eclipsing binary systems U Sge and U Cep are studied and compared against a background of photometric evidence. Broadband photometry of the primary minimum of U Sge over a four year period fails clearly to confirm Olson's (1982) finding of radial variations. On the other hand, the 'W'-type pattern of variation indicated in Olson's (1976) Hβ photometry of the primary eclipse of U Cep is also noticed for U Sge. These effects are analysed in terms of an emitting accretion disk, surrounding the primary components. The findings can be placed in a "Case B"-type interacting binary context.

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