Now showing items 1-4 of 4
Investigation of a sample of carbon-enhanced metal-poor stars observed with FORS and GMOS
(EDP Sciences, 2018-06)
Aims. Carbon-enhanced metal-poor (CEMP) stars represent a sizeable fraction of all known metal-poor stars in the Galaxy. Their formation and composition remains a significant topic of investigation within the stellar ...
Ages and Heavy Element Abundances from Very Metal-poor Stars in the Sagittarius Dwarf Galaxy
(Institute of Physics Publishing, 2018-03)
Sagittarius (Sgr) is a massive disrupted dwarf spheroidal galaxy in the Milky Way halo that has undergone several stripping events. Previous chemical studies were restricted mainly to a few, metal-rich ([Fe/H] ) stars that ...
TOPoS: IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars
(EDP Sciences, 2018-04)
Context. Extremely metal-poor (EMP) stars provide us with indirect information on the first generations of massive stars. The TOPoS survey has been designed to increase the census of these stars and to provide a chemical ...
ESPRESSO highlights the binary nature of the ultra-metal-poor giant HE 0107-5240
(EDP Sciences, 2020)
Context. The vast majority of the known stars of ultra low metallicity ([Fe=H] >-4:5) are known to be enhanced in carbon, and belong to the 'low-carbon band' (A(C) = log(C=H) + 12 7:6). It is generally, although not ...