Stellar Populations of Bulges of Disc Galaxies in Clusters

Bibcode
2008Msngr.133...31M
Morelli, Lorenzo; Pompei, Emanuela; Pizzella, Alessandro; Méndez-Abreu, Jairo; Corsini, Enrico Maria; Coccato, Lodovico; Saglia, Roberto; Sarzi, Marc; Bertola, Francesco
Referencia bibliográfica

The Messenger, vol. 133, p. 31-35

Fecha de publicación:
9
2008
Número de autores
9
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
Photometry and long-slit spectroscopy are presented for 14 S0 and spiral galaxies of the Fornax, Eridanus and Pegasus clusters and the NGC 7582 group. The age, metallicity and α/Fe enhancement of the stellar population in the centres and their gradients are obtained using stellar population models with variable element abundance ratios. Most of the sample bulges display solar α/Fe enhancement, no gradient in age, and a negative gradient of metallicity. One of the bulges, that of NGC 1292, is a pseudobulge and the properties of its stellar population are consistent with a slow build-up within a scenario of secular evolution.
Tipo
Sin árbitro

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