THE INFRARED DEVELOPMENT OF V705 CASSIOPEIAE

We report 1.2-18.5 mu m spectrophotometric measurements of the CO nova V705 Cassiopeiae (Nova Cas 1993). Observations were made over a 2.5 y r period between 7.1 and 929.4 days past outburst. This time frame was marked by all major phases of nova evolution, An optically thick, car bon dust shell formed by day 70.9. Later evolutionary stages of the du st shell are modeled using a combination of emission from carbon, sili cate, and hydrocarbon grains. Using this model, we estimate carbon, si licate, and gas abundances in addition to several other calculable phy sical parameters.