Abstract Details
| Name: Gajendra Pandey Affiliation: Indian Institute of Astrophysics Conference ID: ASI2015_941 Title : Are extreme helium and R Coronae Borealis stars, merged products of two white dwarfs? Abstract Type : Plenary Abstract : Extreme helium and R Coronae Borealis stars are hydrogen poor but carbon rich supergiants. Two scenarios are proposed for the origin of these stars: the double degenerate (white dwarf merger), and the final helium-shell flash in a single star. In this talk, I will discuss our recent results based on Neon, Fluorine, and 13C abundances in these stars. These abundances are important clues to determining the evolutionary pathways/connections of extreme helium and R Coronae Borealis stars. |