CAOSP abstracts, Volume: 55, No.: 3, year: 2025

Author(s): Munari, U.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 55, no. 3, p. 47-66.
Date: 04/2025
Title: Symbiotic novae
Keyword(s): binaries: symbiotic, novae, cataclysmic variables, circumstellar matter, jets and outflows, catalogs
Pages: 47 -- 66
DOI: https://doi.org/10.31577/caosp.2025.55.3.47
NASA ADS Abstract Service: 2025CoSka..55c..47M
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: (Invited Review) According to modern definition, a symbiotic nova is an otherwise normal nova (i.e. powered by explosive thermonuclear burning) that erupts within a symbiotic star, which is a binary where a WD accretes from a cool giant companion. Guided primarily by the very well observed eruptions of RS Oph in 2006 and 2021, and that of V407 Cyg in 2010, we describe the main multi-wavelength properties of symbiotic novae and their relation to classical novae, and propose a 3D model structure that identifies the emitting source location for hard and supersoft X-rays, radio syncrothron and thermal, permitted and forbidden emission lines. Very few symbiotic novae are known in the Galaxy, and we compile a revised catalog based on firm astrometric identification. The exciting prospect of an imminent new outburst of T CrB is also discussed.