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The Abundances of α- elements in the open cluster NGC 6791 from APOGEE data

Published online by Cambridge University Press:  17 July 2015

K. Cunha  and
V.V. Smith
K. Cunha
Affiliation:
Observatorio Nacional, Rio de Janeiro, Brazil & University of Arizona, Tucson, USA
V.V. Smith
Affiliation:
National Optical Astronomy Observatory, Tucson, USA
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Abstract

The open cluster NGC 6791 is among the oldest, most massive open clusters in the Galaxy. High-resolution H-band spectra from the SDSS III / Apache Point Observatory Galactic Evolution Experiment (APOGEE) of 11 red giants in NGC 6791 are analyzed for their chemical abundances of 8 elements: C, N, O, Mg, Si, Ca, Ti and Fe. From the infrared spectra, this cluster is confirmed to be among the most metal-rich clusters in the Galaxy (< [Fe/H] >= 0.34 ± 0.06), and is found to have roughly solar values of the α-element abundances.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 68: Volume 67-68: The Milky Way Unravelled by Gaia: GREAT Science from the Gaia Data Releases , 2014 , pp. 365
Copyright
© EAS, EDP Sciences, 2015

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References

Cunha, K., Smith, V.V., Johnson, J.A., et al., 2015, ApJ, 798, L41CrossRef