The R Coronae Borealis stars - atmospheres and abundances

• An abundance analysis of the H-deficient and He- and C-rich R Coronae Borealis (R CrB) stars has been undertaken to examine the ancestry of the stars. The investigation is based on high-resolution spectra and line-blanketed H-deficient model atmospheres.

Nyckelord

stars : abundances; stars : evolution; stars : AGB and post-AGB; stars : variables : general; stars : individual : RCrB; stars : individual : Sakurai's object; EXTREME HELIUM STARS; HIGH-RESOLUTION SPECTROSCOPY; DEFICIENT CARBON STARS; MODEL ATMOSPHERES

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