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2010AJ....140.2109M - Astron. J., 140, 2109-2123 (2010/December-0)

Metallicities of young open clusters. I. NGC 7160 and NGC 2232.


Abstract (from CDS):

We present a moderate-resolution spectroscopic analysis of the 10-25 Myr clusters NGC 7160 and NGC 2232 using observations obtained with the WIYN 3.5 m telescope. Both NGC 7160 and NGC 2232 are found to have super-solar metallicities, with a mean [Fe/H] = 0.16±0.03 (s.e.m.) for NGC 7160, and 0.22±0.09 (s.e.m.) or 0.32±0.08 for NGC 2232, depending on the adopted temperature scale. NGC 7160 exhibits solar distributions of Na, Fe-peak, and α-elements. NGC 2232 is underabundant in light elements Al and Si, by ∼0.25 and ∼0.15 dex, respectively; [Ni/Fe] is roughly solar. The abundance of lithium in NGC 2232 stars is in agreement with undepleted values reported for other cluster main-sequence stars. Our abundances are similar to other metal-rich open clusters and Galactic thin and thick disk stars.

Abstract Copyright:

Journal keyword(s): circumstellar matter - open clusters and associations: general - open clusters and associations: individual (NGC 7160, NGC 2232) - stars: abundances

VizieR on-line data: <Available at CDS (J/AJ/140/2109): stars.dat table6.dat table7.dat>

Simbad objects: 80

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