The Contribution of Chemical Abundances in Nova Ejecta to the Interstellar Medium

Abstract

According to the nova model from \citet{Yaron2005} and \citet{Jose1998} and using Monte Carlo simulation method, we investigate the contribution of chemical abundances in nova ejecta to the interstellar medium (ISM) of the Galaxy. We find that the ejected mass by classical novae (CNe) is about $2.7\times 10^{-3}$ ${\mathrm{M}}_{\odot }\mathrm{y}{\mathrm{r}}^{-1}$. In the nova ejecta, the isotopic ratios of C, N and O, that is, ${}^{13}$C/${}^{12}$C, ${}^{15}$N/${}^{14}$N and ${}^{17}$O/${}^{16}$O, are higher about one order of magnitude than those in red giants. We estimate that about 10$\%$, 5$\%$ and 20$\%$ of ${}^{13}$C, ${}^{15}$N and ${}^{17}$O in the ISM of the Galaxy come from nova ejecta, respectively. However, the chemical abundances of C, N and O calculated by our model can not cover all of observational values. This means that there is still a long way to go for understanding novae.

15 pages, 5 fiures, 4 tables, Accepted for publication in PASJ

References in corpus (3)

• Population synthesis for symbiotic stars with white dwarf accretors
• Nuclear Thermometers for Classical Novae
• Exploring masses and CNO surface abundances of red giant stars

Cited by in corpus (8)

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• Cosmic-Ray Lithium Production at the Nova Eruption Followed by a Type Ia Supernova
• Molecules in the peculiar age-defying source IRAS 19312+1950
• A search for cool molecular gas in GK Persei and other classical novae
• The Formation of Bimodal Dust Species in Nova Ejecta
• The bi-modal ${}^7$Li distribution of the Milky Way's thin-disk dwarf stars: The role of Galactic-scale events and stellar evolution
• Heavy element contributions of rotating massive stars to Interstellar Medium
• Evidence for GeV Cosmic Rays from White Dwarfs in the Local Cosmic Ray Spectra and in the Gamma-ray Emissivity of the Inner Galaxy