We present models for the slow neutron-capture process (s-process) in asymptotic giant
branch stars of metallicity [Fe/H]=− 2.3 and masses 0.9–6 M☉. We encountered different …

The carbon-enhanced metal-poor (CEMP) stars constitute approximately one fifth of the
metal-poor ($[{\rm Fe}/{\rm H}]\la-2$) population but their origin is not well understood. The …

We have developed a detailed stellar evolution code capable of following the simultaneous
evolution of both stars in a binary system, together with their orbital properties. To …

One possible scenario for the formation of carbon-enhanced metal-poor stars is the
accretion of carbon-rich material from a binary companion which may no longer visible. It is …

Radioactive nuclei were present in the early solar system (ESS), as inferred from analysis of
meteorites. Many are produced in massive stars, either during their lives or their final …

In recent years much interest has been shown in the process of thermohaline mixing in red
giants. In low-and intermediate-mass stars this mechanism first activates at the position of …

We investigate the formation of carbon-enhanced metal-poor (CEMP) stars via the scenario
of mass transfer from a carbon-rich asymptotic giant branch primary to a low-mass …

An analysis of the fluorine abundance in Galactic asymptotic giant branch (AGB) carbon
stars (24 N-type, 5 SC-type, and 5 J-type) is presented. This study uses the state-of-the-art …

Fluorine has many different potential sites and channels of production, making narrowing
down a dominant site of fluorine production particularly challenging. In this work, we …

We examine the effects of thermohaline mixing on the composition of the envelopes of low-
metallicity asymptotic giant branch (AGB) stars. We have evolved models of 1, 1.5 and 2 M⊙ …