SIMBAD references

2006ApJ...642..462G - Astrophys. J., 642, 462-469 (2006/May-1)

The metallicity of the old open cluster NGC 6791.

GRATTON R., BRAGAGLIA A., CARRETTA E. and TOSI M.

Abstract (from CDS):

We have observed four red clump stars in the very old, metal-rich open cluster NGC 6791 to derive its metallicity using the high-resolution spectrograph SARG mounted on the Galileo National Telescope (TNG). Using a spectrum synthesis technique, we obtain an average value of [Fe/H]=+0.47 (±0.04, rms=0.08) dex. Our method was tested on µ Leo, a well-studied, metal-rich field giant. We also derive average oxygen and carbon abundances for NGC 6791 from synthesis of [O I] at 6300 Å and C2at 5086 Å, finding [O/Fe]≃-0.3 and [C/Fe]≃-0.2.

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Journal keyword(s): Galaxy: Disk - Galaxy: Open Clusters and Associations: General - Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 6791 - Stars: Abundances

Simbad objects: 9

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