The currently popular story, illustrated in the first graph, posits that the total mass in the bulge of old stars swarming around the central regions of a galaxy is directly related to the mass of the black hole that resides in the galaxy's core. The actual data are plotted in the second graph. The lower-right quadrant of this graph is unpopulated, but this may be the result of the selection effect described in the text.
|Illustration: BH-Bulge "correlation"|
|Graph: BH - Bulge "correlation"|