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OATS-DAUT SEMINAR
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Speaker: Peter Katgert (Leiden Observatory, NL)

Title: The shapes of disks and bulges in cluster galaxies of different morphological types

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Abstract: We analyzed the 2-d surface-brightnesses of more than 2000 galaxies in ENACS clusters (z <~ 0.1), by applying a GIM2D bulge-disk decomposition to the R-band CCD-images of these galaxies. Since all galaxies were also morphologically classified, the shapes of both components could be studied as a function of galaxy type. There appear to be systematic differences between the properties of both bulges and disks in ellipticals and non-ellipticals. We attempt to understand our results in terms of ideas about the formation of bulges, and about the formation, destruction and possible rebuilding of disks.
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contact: Andrea Biviano (OATS)