A study of the shell of Nova V705 Cas

Spectroscopic observations of the DQ Her-type Nova V705 Cas in the wavelength range Hγ-7400 Å at the nebular stage are presented. The Balmer decrement yields E _B–V =0.98. Based on statistical relationships, we estimated E _B–V to be 0.7 and the distance to the Nova to be 1.17 kpc. The discrepancy between the estimates of E _B–V may result from circumstellar reddening after the formation of a dust shell. The helium, oxygen, nitrogen, argon, iron, and calcium abundances in the Nova shell are determined. The shell of V705 Cas is similar in chemical composition to those of other DQ Her-type novae.