Issue |
A&A
Volume 441, Number 1, October I 2005
|
|
---|---|---|
Page(s) | 131 - 140 | |
Section | Galactic structure, stellar clusters, and populations | |
DOI | https://doi.org/10.1051/0004-6361:20052875 | |
Published online | 13 September 2005 |
High-resolution spectroscopy of the old open cluster Collinder 261: abundances of iron and other elements
1
INAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, Italy e-mail: carretta@pd.astro.it
2
INAF – Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
Received:
14
February
2005
Accepted:
30
May
2005
We present the
analysis of high resolution spectra of six red giant stars
in the old open cluster Collinder 261.
Reddening values for individual stars, derived
from the relation between colours and temperatures (deduced
from our fully spectroscopic analysis) are consistent with previous
determinations based on photometry.
For this cluster we derive an iron abundance of .
We also obtain the abundances of light metals (O, Na and Al), α-elements (Mg,
Si, Ca, Ti), elements of the Fe-group (Sc, Cr, Mn, Co, Ni) and the
neutron-capture element Ba. No intrinsic star-to-star scatter is present
in any of these elements within our sample.
We compare our findings with previous investigations on this cluster,
discussing in detail differences in analysis methods and results.
Key words: stars: abundances / stars: atmospheres / Galaxy: disk / Galaxy: open clusters and association: general / Galaxy: open clusters and associations: individual: Collinder 261
© ESO, 2005
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