Elemental abundances in CEMP stars: r– and s–process elements

Abstract

A number of Carbon-Enhanced Metal-poor (CEMP) stars are known to exhibit enhancement of both r – and s – process elements. An understanding of the relative contributions from r – and s – process would provide insight into the production mechanisms, nucleosynthetic sites and origins of the heavy elements observed in the stars. We have investigated ways to delineate the observed abundances into their respective r – and s – process contributions. Preliminary results obtained using appropriate model functions in the framework of a parametric model are discussed.