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The Globular Cluster System of NGC 1399: Optical HST Imaging and ESO (Ground-Based) Near-IR Imaging

Published online by Cambridge University Press:  25 May 2016

Paul Goudfrooij
Affiliation:
Space Telescope Science Institute, Baltimore, USA
M. Victoria Alonso
Affiliation:
Observatorio Astronomico Cordoba, Cordoba, Argentina
Dante Minniti
Affiliation:
Lawrence Livermore National Laboratory, Livermore, USA

Extract

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We report on an ongoing study of the optical–near-IR colors of globular clusters (GCs) in E galaxies. The motivation is that (i) HST images give the necessary resolution to discriminate against foreground stars and background galaxies, while the photometry goes very deep; (ii) Near-IR observations reach only the brightest clusters, but provide a much larger color baseline which is very useful to e.g., identify intermediate-age clusters such as those found in the LMC and in NGC 5128 (cf. Minniti et al. 1996, ApJ, 467, 221), and to measure more accurate metallicities, particularly at the metal-rich extreme of the metallicity distribution.

Type
Mergers & Remnants
Copyright
Copyright © Kluwer 1999