The UBVRI photometry of DQ Herculis (N 1934). II. Physical properties of the system.

Details The UBVRI photometry of DQ Herculis (N 1934). II. Physical properties of the system. The UBVRI photometry of DQ Herculis (N 1934). II. Physical properties of the system.

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988afz....29..293d&link_type=abstract

Astrofizika, Tom 29, Vyp. 2, p. 293 - 299

Astronomy and Astrophysics

Astronomy

Nova Herculis 1934, Cataclysmic Binaries: Photometry

Scientific paper

Physical parameters of DQ Her are determined on the basis of complex analysis of 1982 - 1986 UBVRI light curves, spectral data and model simulations. The UBVRI brightness distribution functions on the unperturbed by the hot spot accretion disc, enveloping the white dwarf, are obtained. The average UBVRI radius of the luminous part of the accretion disc is (35 - 43)% of the orbit radius α. Supposing, the secondary's mass satisfies the empirical relation M2-P for cataclysmic variables, then, in case K1 = 149 km/s, the mass of the white dwarf is Mwd = (0.70 - 0.73) Msun; α ≅ (1.03 - 1.04)x1011cm, i ≅ 79° - 82°, R20 ≅ (0.41 - 0.40) α and the mass ratio M2/Mwd ≅ 0.65 - 0.62.

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