Time Resolved Spectroscopy of Cataclysmic Variables - U-Geminorum

Details Time Resolved Spectroscopy of Cataclysmic Variables - U-Geminorum Time Resolved Spectroscopy of Cataclysmic Variables - U-Geminorum

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...248..684s&link_type=abstract

Astrophysical Journal, Vol.248, P. 684, 1981

Astronomy and Astrophysics

Astrophysics

81

Scientific paper

Spectroscopic observations of the dwarf nova U Gem are presented. We also present new measurements of the radial-velocity variations of the accretion disk emission lines. With these new measurements, we derive the masses of the white dwarf primary and the red dwarf secondary: Mwd = 1.18 Msun, Mred = 0.56 Msun. Analysis of the emission-line profiles show that the disk in U Gem cannot be approximated by a model in which the disk particles are assumed to follow simple periodic orbits described by the three-body approximation. Furthermore, the line profiles indicate the presence of turbulent velocities in the disk.

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