2010•arXiv (Cornell University)Open access
The Coexistence of Classical Bulges, Pseudobulges, and Supermassive\n Black Holes
Peter Erwin
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Abstract
Some S0 and early-type spiral galaxies possess "composite bulges"; in these\ngalaxies, the photometric bulge -- the central stellar light in excess of the\ndisk light -- is composed of both a "(disky) pseudobulge", with a flattened,\ndisklike morphology and relatively cool stellar kinematics, and a rounder,\nkinematically hot "classical bulge" embedded within. I speculate that\nsupermassive black holes (SMBH) in such galaxies may correlate with the\nclassical-bulge component only, and not with the pseudobulge component;\npreliminary comparisons with SMBH masses appear to support this hypothesis.\n
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