Chemical composition of extremely metal-poor stars in the Sextans dwarf spheroidal galaxy

Context. Individual stars in dwarf spheroidal galaxies around the Milky Way Galaxy have been studied both photometrically and spectroscopically. Extremely metal-poor stars among them are very valuable because they should record the early enrichment in the Local Group. However, our understanding of these stars is very limited because detailed chemical abundance measurements are needed from high resolution spectroscopy.


Publié dans:
Astronomy & Astrophysics, 502, 569-U208
Année
2009
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 Notice créée le 2010-11-30, modifiée le 2018-12-03


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