SIMBAD references

2003AJ....126.2372F - Astron. J., 126, 2372-2384 (2003/November-0)

Abundances of red giants in the old open cluster Collinder 261.

FRIEL E.D., JACOBSON H.R., BARRETT E., FULLTON L., BALACHANDRAN S.C. and PILACHOWSKI C.A.

Abstract (from CDS):

We present an analysis of high-dispersion echelle spectra of four giant stars in the 8 Gyr open cluster Cr 261 obtained with the Cerro Tololo Inter-American Observatory's 4 m telescope. Abundances were determined relative to the bright, slightly metal-poor disk giant Arcturus. Cr 261 is found to have a mean [Fe/H]=-0.22±0.05 (mean error). Oxygen abundances, determined from the forbidden [O I] lines, show roughly solar or slightly depleted abundance ratios. The α-elements Mg, Ca, and Ti also show scaled solar abundance ratios, with suggestions that the Si abundance is slightly enhanced. The odd-Z elements Na and Al are significantly enhanced relative to scaled solar abundances. The abundance results for Cr 261 are compared with those from high-dispersion studies of other old open clusters in the literature, which, overall, show similar behavior in all these elements. None of the abundance ratios show significant trends with overall cluster [Fe/H] or with cluster age.

Abstract Copyright:

Journal keyword(s): Galaxy: Abundances - open clusters and associations: individual (Collinder 261) - Stars: Abundances

Status at CDS:  

Simbad objects: 17

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2020.06.01-08:58:36

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