A study of the shell of Nova V705 Cas

Spectroscopic observations of the DQ Her-type Nova V705 Cas in the waveleng th range H gamma-7400 Angstrom at the nebular stage are presented. The Balm er decrement yields EB-V - 0.98. Based on statistical relationships, we est imated EB-V to be 0.7 and the distance to the Nova to be 1.17 kpc. The disc repancy between the estimates of EB-V may result from circumstellar reddeni ng 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-typ e novae. (C) 2000 MAIK "Nauka/Interperiodica.