Photoionization models of the evolution of Nova DQ Her 1934

Data on the optical evolution of a single nova Nova DQ Her 1934 is presented. The evolution of the nova remnant and the physical conditions which influence the appearance and the evolution of the ejecta are determined from these data quantatively where possible. Through modeling a nova it is hoped to be able to learn the evolution of To photospheric temperature and Lbol (bolometric luminosity) of the remnant, the evolution of Ne (electron number density) and Te (electron temperature) in the ejecta, the physical conditions in the dust-forming region, the total mass of the ejecta and the relative abundances of the elements. This would also allow the discovery of the physical processes which influence the evolution and the appearance of the ejecta. (U.K.)