Polars:
Spectral Characteristics
€Optical spectra are dominated by strong emission lines of Hydrogen and Helium
€General slope influenced by Balmer and Paschen continua
€UV spectra show strong CIV, SiIV and NV lines (plus others)
€Strong lines indicative of substantial emission from the accretion stream
€In high state generally no signature of the secondary or primary
Schacter et al (1991)
Tanzi et al (1980)