The central slope of the rotation curve, a good dynamical indicator
of the mass concentration at the galactic center, was found to be in
good agreement with the mass concentration suggested by the surface
brightness measurements. Of the 178 galaxies that have a sharp
brightness peak at the center, 80% have high central slopes in the
rotation curves. The central slope of the rotation curve again has
no correlation with the morphological class of the galaxies, nor does
it depend on the absolute magnitude or maximum rotation velocity of a
galaxy. These results were confirmed by independently examining 123
galaxies of the northern sky selected from various sources in the
literature.
1999, for Intel ISEF
(Research processing)