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Globular clusters in the near–infrared

Published online by Cambridge University Press:  21 October 2010

E. Valenti ,
L. Origlia  and
R. M. Rich
E. Valenti
Affiliation:
ESO – European Southern Observatory, Av. Alonso de Cordova, 3107 Casilla 19001, Santiago, CHILE Pontificia Universidad Catolica de Chile, Departamento de Astronomia y Astrofisica, Av. Vicuña Mackenna 4860, 782–0436 Macul, Santigo, CHILE
L. Origlia
Affiliation:
INAF – Osservatorio Astronomico di Bologna, Via Ranzani, 1, 40127 Bologna, ITALY
R. M. Rich
Affiliation:
Department of Physics and Astronomy, Math–Sciences 8979, UCLA, Los Angeles CA90095–1562, USA
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The study of Globular Cluster (GC) stellar populations (SPs) addresses fundamental astrophysical questions ranging from stellar structure, evolution and dynamics, to Galaxy formation. Indeed, they represent: i) fossils from the remote and violent epoch of Galaxy formation, ii) test particles for studying Galaxy dynamics and stellar dynamical model, and iii) fiducial templates for studying integrated light from distant stellar systems. In particular, high resolution spectroscopy of GC SPs provides abundance patterns which are crucial for understanding the formation and chemical enrichment time–scale of the host galaxy. Here the major results on Galactic GCs based on high-resolution near-infrared (near–IR) spectroscopy are briefly reviewed. Optical and IR spectroscopy are complementary tools to investigate SPs in different environments, the latter being more suitable in the case of moderately–high extinction regions (AV≥2) and high metallicity.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Highlights H15: Highlights of Astronomy , November 2009 , pp. 555 - 556
Copyright
Copyright © International Astronomical Union 2010

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