SPECTROSCOPIC IMAGING OF THE SECONDARY STAR IN AM HER

Spectroscopic observations of AM Her are used to determine the orbital velocity of the secondary star. We describe how the radial velocities and flux deficits derived from the Na I doublet around 8190 Angstrom can be used to map the Na I surface distribution and hence give an est imate of K-2, corrected for the effects of irradiation. The resulting surface maps are consistent with the accretion geometry proposed by Cr opper and, from the 'quality' of the fit, suggest an inclination of 50 degrees or more, higher than that normally quoted.