Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

NGC 315 (UGC 597) This elliptical galaxy has a nuclear dust disk (b/a = 0.23).
It has a core-jet radio morphology on VLA and VLBA scales. The STIS slits were
aligned parallel to the galaxy major axis. The central kinematic and flux properties
are listed in Table 3.6; the gas appears to be in organized motion, possibly regular
rotation. The fit to the central spectrum is improved by the addition of a broad
component. Data for this galaxy are shown in Figure 3.3 (see key in Figure 3.1 for
an explanation of these plots).
NGC 383 (UGC 689) This S0 galaxy has a nuclear dust disk (b/a = 0.77). It
has a core-jet radio morphology on VLBA scales, and a twin-jet morphology on VLA
scales. The STIS slits were aligned parallel to the galaxy major axis. The central
kinematic and flux properties are listed in Table 3.7; the gas exhibits a regular rotation
profile. In the negative offset side slit there is a dip in the velocity dispersion profile
at a position close to the nucleus. The fit to the central spectrum is improved by the
addition of a broad component. Data for this galaxy are shown in Figure 3.4 (see key
in Figure 3.1 for an explanation of these plots).
NGC 541 (UGC 1004) This cD S0 galaxy has a nuclear dust disk (b/a = 0.91). It
has a radio core on VLBA scales and a core-jet morphology on VLA scales. The STIS
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