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Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

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slits were aligned to a mean of the position angles of the central isophotes measured<br />

from our WFPC/2 images, which vary considerably. We allowed considerable flexibil-<br />

ity <strong>in</strong> position angle to enable reasonable observ<strong>in</strong>g w<strong>in</strong>dows. The central k<strong>in</strong>ematic<br />

<strong>and</strong> flux properties are listed <strong>in</strong> Table 3.8; the gas does not exhibit a regular rotation<br />

profile. The fit to the central spectrum is not significantly improved by the addition<br />

of a broad component, though the fit improves somewhat when judged by eye. Data<br />

for this galaxy are shown <strong>in</strong> Figure 3.5 (see key <strong>in</strong> Figure 3.1 for an explanation of<br />

these plots).<br />

NGC 741 (UGC 1413) This E0 galaxy has no apparent nuclear dust. It has a<br />

radio core on VLBA scales <strong>and</strong> a core-jet morphology on VLA scales. The STIS slits<br />

were aligned approximately parallel to the galaxy major axis, however a certa<strong>in</strong> degree<br />

of freedom was allowed <strong>in</strong> slit placement to allow reasonable observ<strong>in</strong>g w<strong>in</strong>dows. The<br />

central k<strong>in</strong>ematic <strong>and</strong> flux properties are listed <strong>in</strong> Table 3.9. Very few po<strong>in</strong>ts had<br />

sufficient signal to noise to obta<strong>in</strong> good fits <strong>in</strong> these data, it has not been <strong>in</strong>cluded<br />

<strong>in</strong> further analysis of global k<strong>in</strong>ematic properties. The fit to the central spectrum is<br />

not improved by the addition of a broad component. Data for this galaxy are shown<br />

<strong>in</strong> Figure 3.6 (see key <strong>in</strong> Figure 3.1 for an explanation of these plots).<br />

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