Abstract
Using black hole masses which span 10^5 to 10^(10) solar masses, the
distribution of galaxies in the (host spheroid stellar mass)-(black hole mass)
diagram is shown to be strongly bent. While the core-Sersic galaxies follow a
near-linear relation, having a mean M\_(bh)/M\_(sph) mass ratio of \~0.5\%, the
Sersic galaxies follow a near-quadratic relation: M\_bh\~M\_sph^(2.22+\-0.58).
This is not due to offset pseudobulges, but is instead an expected result
arising from the long-known bend in the M\_(sph)-sigma relation and the
log-linear M\_(bh)-sigma relation.
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