A NEW CATALOG OF HOMOGENIZED ABSORPTION LINE INDICES FOR MILKY WAY GLOBULAR CLUSTERS FROM HIGH-RESOLUTION INTEGRATED SPECTROSCOPY

Journal Article · Thu Dec 01 00:00:00 EST 2016 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.3847/1538-4365/227/2/24· OSTI ID:22660918

Kim, Hak-Sub; Yoon, Suk-Jin ^[1]; Cho, Jaeil ^[2]; Sharples, Ray M. ^[3]; Vazdekis, Alexandre

---

1. Center for Galaxy Evolution Research, Yonsei University, Seoul 03722 (Korea, Republic of)
2. Gwacheon National Science Museum, Gyeonggi 13817 (Korea, Republic of)
3. Department of Physics, University of Durham, South Road, Durham DH1 3LE (United Kingdom)

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.

• OSTI ID: 22660918
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 227, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ABSORPTION
ABUNDANCE
CATALOGS
CONVERSION
INDEXES
METALLICITY
MILKY WAY
MORPHOLOGY
RESOLUTION
SPECTROSCOPY
STAR EVOLUTION
STARS
WAVELENGTHS