The origin of carbon-enhanced metal-poor (CEMP) stars and their possible connections with the chemical elements produced by the first stellar generations is still highly debated. We briefly review observations of CEMP stars in different environments (Galactic stellar halo, ultra-faint, and classical dwarf galaxies) and interpret their properties using cosmological chemical-evolution models for the formation of the Local Group. We discuss the implications of current observations for the properties of the first stars, clarify why the fraction of carbon-enhanced to carbon-normal stars varies in dwarf galaxies with different luminosity, and discuss the origin of the first CEMP(-no) star found in the Sculptor dwarf galaxy.
Carbon-enhanced metal-poor stars in different environments / Salvadori, S.; Skúladóttir, Á.; de Bennassuti, M.. - In: ASTRONOMISCHE NACHRICHTEN. - ISSN 0004-6337. - STAMPA. - 337:(2016), pp. 935-938. [10.1002/asna.201612402]
Carbon-enhanced metal-poor stars in different environments
SALVADORI, STEFANIA;Skúladóttir, Á.;
2016
Abstract
The origin of carbon-enhanced metal-poor (CEMP) stars and their possible connections with the chemical elements produced by the first stellar generations is still highly debated. We briefly review observations of CEMP stars in different environments (Galactic stellar halo, ultra-faint, and classical dwarf galaxies) and interpret their properties using cosmological chemical-evolution models for the formation of the Local Group. We discuss the implications of current observations for the properties of the first stars, clarify why the fraction of carbon-enhanced to carbon-normal stars varies in dwarf galaxies with different luminosity, and discuss the origin of the first CEMP(-no) star found in the Sculptor dwarf galaxy.I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.