Bibcode
Kim, Hak-Sub; Cho, Jaeil; Sharples, Ray M.; Vazdekis, A.; Beasley, M. A.; Yoon, Suk-Jin
Referencia bibliográfica
The Astrophysical Journal Supplement Series, Volume 227, Issue 2, article id. 24, 34 pp. (2016).
Fecha de publicación:
12
2016
Número de citas
10
Número de citas referidas
10
Descripción
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 ≲ [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.