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2016ApJS..227...24K - Astrophys. J., Suppl. Ser., 227, 24-24 (2016/December-0)

A new catalog of homogenized absorption line indices for Milky Way globular clusters from high-resolution integrated spectroscopy.

KIM H.-S., CHO J., SHARPLES R.M., VAZDEKIS A., BEASLEY M.A. and YOON S.-J.

Abstract (from CDS):

We perform integrated spectroscopy of 24 Galactic globular clusters (GGCs). Spectra are observed from one core radius for each cluster with a high wavelength resolution of ∼2.0 A FWHM. In combination with two existing data sets from Puzia et al. and Schiavon et al., we construct a large database of Lick spectral indices for a total of 53 GGCs with a wide range of metallicities, -2.4 <= [Fe/H] <= 0.1, and various horizontal-branch morphologies. The empirical index-to-metallicity conversion relationships are provided for the 20 Lick indices for the use of deriving metallicities for remote, unresolved stellar systems.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): catalogs - globular clusters: general - stars: abundances - stars: abundances

Simbad objects: 60

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2020.08.03-23:54:10

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