Statistics – Computation
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aca....43..101s&link_type=abstract
Acta Astronomica (ISSN 0001-5237), vol. 43, no. 2, p. 101-119.
Statistics
Computation
98
Dwarf Novae, Stellar Models, White Dwarf Stars, Computational Astrophysics, Starspots, Stellar Mass, Stellar Orbits, Stellar Temperature, Viscosity
Scientific paper
The basic model parameters of WZ Sge at quiescence are reexamined, and masses and dimensions are redetermined using the value of K1 and other observational and theoretical constraints. The masses are estimated to be M1 about 0.45 solar mass and M2 about 0.06 solar mass; the orbital radius is about 3.4 x 10 exp 10 cm; and the inclination i = 75 deg. The mass-transfer rate at quiescence, estimated from the luminosity of the hot spot, is about 2 x 10 exp 15 g/s; the effective temperature of the white dwarf primary is 16,200 K; and the distance is about 48 parsecs. These parameters are not very different from those estimated earlier by various authors. Clearly different are only the determinations by Gilliland et al. (1986). It is shown however that high masses obtained by Gilliland et al., cannot be correct.
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