Astronomical Science Stellar Populations of Bulges of Disc Galaxies in Clusters

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 A /Fe enhancement of the stellar population in the centres and their gradients are obtained using stellar population mod-els with variable element abundance ratios. Most of the sample bulges dis-play solar A /Fe enhancement, no gra-dient 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 ar