AAS 201st Meeting, January, 2003
Session 44. Galactic Open Clusters and Their Contents
Poster, Tuesday, January 7, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[44.05] The Abundances of Open Clusters NGC 188 and NGC 6791

G. Worthey (WSU)

Analysis of low resolution spectra of K giants in old open clusters NGC 188 and NGC 6791 yields [Fe/H] = 0.075 ± 0.045 for NGC 188 and [Fe/H] = 0.320 ± 0.023 for NGC 6791. Both estimates are subject to a drift between our underlying star catalog's abundance scale and the true abundance scale, but the quoted precision of as low as 5% for abundance measurements derived from low resolution spectral indices is readily achievable given multiple measurements and reasonable signal to noise ratios. These estimates are independent of distance and dust extinction.

The author(s) of this abstract have provided an email address for comments about the abstract: gworthey@wsu.edu

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