Stellar Populations of Bulges of Disc Galaxies in Clusters

Details Stellar Populations of Bulges of Disc Galaxies in Clusters Stellar Populations of Bulges of Disc Galaxies in Clusters

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008msngr.133...31m&link_type=abstract

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

Physics

Scientific paper

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.

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