Medium resolution spectroscopy in ω Centauri: abundances of 400 subgiant and turn-off region stars

Medium resolution spectra of more than 400 subgiant and turn-off region stars in ω Centauri were analysed. The observations were performed at the VLT/Paranal with FORS2/MXU. In order to determine the metallicities of the sample stars, we defined a set of line indices (mostly iron) adjusted to the re...

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Veröffentlicht in:	Astronomy and astrophysics (Berlin) 2006-11, Vol.458 (3), p.777-788
Hauptverfasser:	Kayser, A., Hilker, M., Richtler, T., Willemsen, P. G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Earth, ocean, space Exact sciences and technology galaxies: dwarf galaxies: nuclei Galaxy: globular clusters: individual: ω Cen stars: abundances
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