Possibility of fluorescence phenomena in the ultraviolet spectrum of symbiotic stars and long period variables

Abstract

We discuss essentially the cases where molecular fluorescences may be excited by Lyman α and other strong discrete ultraviolet emissions, including lines beyond the Lyman limit. The stars involved are the symbiotic objects and the long period variables. The molecules are H2, N2, O2, NO and CO which have their resonance systems in the ultraviolet.