A NEW CATALOG of HOMOGENIZED ABSORPTION LINE INDICES for MILKY WAY GLOBULAR CLUSTERS from HIGH-RESOLUTION INTEGRATED SPECTROSCOPY

Hak Sub Kim; Jaeil Cho; Ray M. Sharples; Alexandre Vazdekis; Michael A. Beasley; Suk Jin Yoon

doi:10.3847/1538-4365/227/2/24

A NEW CATALOG of HOMOGENIZED ABSORPTION LINE INDICES for MILKY WAY GLOBULAR CLUSTERS from HIGH-RESOLUTION INTEGRATED SPECTROSCOPY

Hak Sub Kim, Jaeil Cho, Ray M. Sharples, Alexandre Vazdekis, Michael A. Beasley, Suk Jin Yoon

Institute of Earth·Atmosphere·Astronomy(BK21+)

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9 Citations (Scopus)

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 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.

Original language	English
Article number	24
Journal	Astrophysical Journal, Supplement Series
Volume	227
Issue number	2
DOIs	https://doi.org/10.3847/1538-4365/227/2/24
Publication status	Published - 2016 Dec

Bibliographical note

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© 2016. The American Astronomical Society. All rights reserved..

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4365/227/2/24

Cite this

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title = "A NEW CATALOG of HOMOGENIZED ABSORPTION LINE INDICES for MILKY WAY GLOBULAR CLUSTERS from HIGH-RESOLUTION INTEGRATED SPECTROSCOPY",

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 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.",

author = "Kim, {Hak Sub} and Jaeil Cho and Sharples, {Ray M.} and Alexandre Vazdekis and Beasley, {Michael A.} and Yoon, {Suk Jin}",

year = "2016",

month = dec,

doi = "10.3847/1538-4365/227/2/24",

language = "English",

volume = "227",

journal = "Astrophysical Journal, Supplement Series",

issn = "0067-0049",

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T1 - A NEW CATALOG of HOMOGENIZED ABSORPTION LINE INDICES for MILKY WAY GLOBULAR CLUSTERS from HIGH-RESOLUTION INTEGRATED SPECTROSCOPY

AU - Kim, Hak Sub

AU - Cho, Jaeil

AU - Sharples, Ray M.

AU - Vazdekis, Alexandre

AU - Beasley, Michael A.

AU - Yoon, Suk Jin

PY - 2016/12

Y1 - 2016/12

N2 - 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 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.

AB - 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 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.

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A NEW CATALOG of HOMOGENIZED ABSORPTION LINE INDICES for MILKY WAY GLOBULAR CLUSTERS from HIGH-RESOLUTION INTEGRATED SPECTROSCOPY

Abstract

Bibliographical note

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