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

Kim, H.-S. and Cho, J. and Sharples, R.M. and Vazdekis, A. and Beasley, M.A. and Yoon, S.-J. (2016) 'A new catalog of homogenised absorption line indices for Milky Way globular clusters from high-resolution integrated spectroscopy.', Astrophysical journal supplement., 227 (2). p. 24.

Abstract

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 Å 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 lesssim [Fe/H] lesssim 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.

Item Type:Article
Full text:(AM) Accepted Manuscript
First Live Deposit - 07 December 2016
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.3847/1538-4365/227/2/24
Publisher statement:© 2016. The American Astronomical Society. All rights reserved.
Record Created:07 Dec 2016 15:28
Last Modified:02 Mar 2017 10:00

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