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Undressing M87 by Exposing its Most Private Globulars

Published online by Cambridge University Press:  17 July 2013

Mireia Montes ,
José A. Acosta-Pulido ,
M. Almudena Prieto  and
Juan A. Fernández-Ontiveros
Mireia Montes*
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Vía Láctea s/n, La Laguna, E-38200, Spain Departamento de Astrofísica, Universidad de La Laguna, La Laguna, E-38207, Spain
José A. Acosta-Pulido
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Vía Láctea s/n, La Laguna, E-38200, Spain Departamento de Astrofísica, Universidad de La Laguna, La Laguna, E-38207, Spain
M. Almudena Prieto
Affiliation:
Instituto de Astrofísica de Canarias (IAC), Vía Láctea s/n, La Laguna, E-38200, Spain Departamento de Astrofísica, Universidad de La Laguna, La Laguna, E-38207, Spain
Juan A. Fernández-Ontiveros
Affiliation:
Max-Planck-Institut für Radioastronomie (MPIfR), Bonn, D-53121, Germany
*
†E-mail: mmontes@iac.es (MM)
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Abstract

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We present a multiwavelength photometric analysis of the innermost (3×3 kpc2) Globular Clusters (GCs) of M87. Their Spectral Energy Distributions (SEDs) were built with J and Ks imaging obtained with NaCo at the VLT, along with HST UV-optical archival data. Using both Galatic GC templates and stellar population models, we derived ages (> 10 Gyr) and metallicities ([Fe/H]~ −0.7) for these clusters (e.g: Cohen et al. 1998). These GCs have lower metallicities than its host galaxy. This agrees with the idea that the GC population formed earlier than the bulk of the stars.

Keywords

galaxies: star clustersgalaxies: infrared
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 318
Copyright
Copyright © International Astronomical Union 2013 

References

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