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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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<strong>Gas</strong> Radial Velocity (km s -1 )<br />

400<br />

300<br />

200<br />

100<br />

0<br />

-100<br />

-200<br />

-0.4 -0.2 0.0 0.2 0.4<br />

Position along slit (arcsec)<br />

-0.4 -0.2 0.0 0.2 0.4<br />

Position along slit (arcsec)<br />

Figure 4.20 Observed velocity profiles <strong>in</strong> the central slit position of NGC 4486 (M87)<br />

dur<strong>in</strong>g two different visits. Measured from the flux <strong>and</strong> velocity dispersion profiles<br />

the observations were separated by approximately 0.1 pixels. Large differences <strong>in</strong> the<br />

measured velocities <strong>in</strong> the very central pixels are readily apparent.<br />

<strong>Gas</strong> Radial Velocity (km s -1 )<br />

400<br />

300<br />

200<br />

100<br />

0<br />

-100<br />

-200<br />

207

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