White dwarf mergers and the origin of R Coronae Borealis stars

E. Garc\'ia-Berro; J. Isern; J. Jos\'e; L.G. Althaus; P. Lor\'en-Aguilar; R. Longland

arxiv: 1110.1855 · v1 · pith:RZLUGD5Znew · submitted 2011-10-09 · 🌌 astro-ph.HE · astro-ph.SR

White dwarf mergers and the origin of R Coronae Borealis stars

P. Lor\'en-Aguilar , R. Longland , J. Jos\'e , E. Garc\'ia-Berro , L.G. Althaus , J. Isern This is my paper

classification 🌌 astro-ph.HE astro-ph.SR

keywords dwarfwhiteborealiscoronaemassessolarstarsabundance

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We present a nucleosynthesis study of the merger of a 0.4 solar masses helium white dwarf with a 0.8 solar masses carbon-oxygen white dwarf, coupling the thermodynamic history of Smoothed Particle Hydrodynamics particles with a post-processing code. The resulting chemical abundance pattern, particularly for oxygen and fluorine, is in qualitative agreement with the observed abundances in R Coronae Borealis stars.

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White dwarf mergers and the origin of R Coronae Borealis stars

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