What is NC(+E?) ? According to Nussbaumer & Vogel (1996, A&A, 307, 470) PU Vulpeculae is a symbiotic nova with a period of ~13 years! This means a different binary configuration than in classical novae, so despite the thermonuclear runaway, exclusion from the nova list is justified. Regards, Alon ------------------------------------------------------------------------- Dr. Alon Retter Tel. (work) +44-(0)1782-58-3493 Physics Dept. Fax (work) +44-(0)1782-711093 Keele University ----------------------------------- Staffordshire 'As a scientist I don't believe myself, so ST5 5BG, U.K. why should I believe you?' (A.R. 1965-2085) ------------------------------------------------------------------------- On Fri, 20 Aug 1999, Taichi Kato wrote: > Re: [vsnet-chat 2238] Re: (fwd) Nova Paper research > > I have recently received another related question. "Is PU Vul a nova?" > This object is currently classified as NC(+E?). If the thermonuclear runaway > on a white dwarf in a binary is the nature of the nova, is there any > reason to exclude NC-type from the nova list? > > Regards, > Taichi Kato > >