Spectrophotometry of Nova Cygni 1975 (V1500 Cygni)

Abstract

The spectrum of Nova Cygni 1975 obtained at the Beijing Observatory is further analysed here. The distance, interstellar absorption, intensity ratios of some emission lines of the nova, the temperature of the central star and the electron density and temperature in the expanding shell are derived. As the nova declined in brightness, both the temperature of the central star and the electron temperature increased and they showed similar fluctuations.