Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

M BH (M Sun)
10 10
10 9
10 8
10 7
10 6
60 70 80 90100 200 300 400
σ c (km s -1 )
Figure 2.22 Measured black hole masses (MBH) as a function of central stellar velocity
dispersion (σc) for reliable determinations summarized by Tremaine et al. (2002). The
line indicates the fit M• = 1.3 ×10 8 M⊙(σc/200) 4.72 . (*) indicates masses determined
from stellar dynamical modeling; (◦) indicates masses determined from gas kinematics;
and (△) indicates masses determined from MASER kinematics. The members of
the UGC FR-I sample which have previous black hole mass measurements are shown
as black squares (�).
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