Undressing M87 by Exposing its Most Private Globulars

Montes, M.; Acosta-Pulido, J. A.; Prieto, M. A.; Fernández-Ontiveros, Juan A.
Referencia bibliográfica

The Intriguing Life of Massive Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 295, pp. 318-318

Fecha de publicación:
7
2013
Número de autores
4
Número de autores del IAC
3
Número de citas
0
Número de citas referidas
0
Descripción
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.