Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...309..147m&link_type=abstract
Astronomy and Astrophysics, v.309, p.147-154
Astronomy and Astrophysics
Astrophysics
17
Novae, Cataclysmic Variables, Stars: Individual: Cu Vel, Stars: Imaging, Stars: Fundamental Parameters
Scientific paper
Time resolved Hα spectroscopy and differential photometry at the U, B bands, reveal an orbital period of 1.884+/-0.005h and a K radial velocity semiamplitude of 49+/-6km/s. The dynamical solution and spectroscopic measures indicate a mass ratio M_2_/M_1_=0.115+/-0.005, a primary mass M_1_=1.23+/-0.23Msun_, a secondary mass M_2_=0.15+/-0.03Msun_ and an inclination angle i=59+/-6deg. Doppler imaging reveals a line emissivity decreasing with radius as r^-1.4^. Smooth 0.11mag semiamplitude periodic oscillations at U and B bands, Hα V/R variations and equivalent width oscillations up to 15% of the mean value, could be due to a hotspot located in the stream-disk impact region. This picture is supported by the Hα Doppler tomogram.
Díaz Marco
Mennickent Ronald E.
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