Overshoot convective mixing in nova outbursts

Ami S. Glasner, Eli Livne, James W. Truran

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We present a 2D study of the overshoot convective mechanism in nova outbursts for a wide range of possible compositions of the layer underlying the accreted envelope. Previous surveys studied this mechanism only for solar composition matter accreted on top of carbon oxygen (CO) white dwarfs. Since, during the runaway, mixing with carbon enhances the hydrogen burning rates dramatically, one should question whether significant enrichment of the ejecta is possible also for other underlying compositions (He, O, Ne, Mg) predicted by stellar evolution models. When needed we upgraded our reaction network and simulated several non-carbon cases. Despite large differences in rates, time scales and energetics, our results show that the convective dredge up mechanism predicts significant enrichment in all cases, including that of helium enrichment in recurrent novae.
Original languageEnglish
Title of host publicationStella Novae:
Subtitle of host publicationPast and Future Decades
EditorsP.A. Woudt, V.A.R.M. Ribeiro
Place of PublicationSAN FRANCISCO, CA
PublisherAstronomical Society of the Pacific
Number of pages8
ISBN (Print)978-1-58381-864-0
StatePublished - 2014

Publication series

NameAstronomical Society of the Pacific Conference Series


Dive into the research topics of 'Overshoot convective mixing in nova outbursts'. Together they form a unique fingerprint.

Cite this