Spektralphotometrische Untersuchung der Nova Delphini 1967

Nova Delphini 1967 (HR Del) was discovered on July 8, 1967. It belongs to the small group of slow novae. A study was conducted of 35 objective prism spectra of Nova Delphini 1967. The spectra had been obtained during the time from July 1967 to August 1974. The wavelength range from 3400 to 6500 A was used for the reduction of the observations. Distance and interstellar extinction of the nova were determined. The intensity distribution in the continuum between 3400 and 6500 A was measured. The obtained data were used as a basis for the derivation of the color temperature (4250 A) and the radius of the photosphere as a function of time. A relation between changes in the color temperature and brightness is considered.