Spectroscopic results of the recurrent nova RS ophiuchi

Abstract

The recurrent nova RS Ophiuchi has had five outbursts in 1898, 1933, 1958, 1967 and 1985. We present here in brief the spectroscopic results of the 1985 outburst and subsequent quiescence, based on data obtained at the Vainu Bappu Observatory (VBO), Kavalur. Detailed results of the 1985 outburst appear in Anupama and Prabhu (1989). Spectra were recorded in the range 6200-8900 A at dispersion of 194 A mm⁻¹ at four epochs: 32, 59 and 60; 89 and 91 and 108 days since the 1985 outburst maximum on January 27.5. In addition, spectra were recorded in the range 4300-5600 and 5000-7600 A at dispersion of 132 A mm⁻¹on day 60, and in the range 5700-8000 A, at dispersion of 194 A mm⁻¹, on days 89, 91 and 108.