Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

Intensity (erg s −1 cm −2 Å −1 arcsec −2 )
v r (km s −1 )
2.0•10 −14
1.5•10 −14
1.0•10 −14
5.0•10 −15
2400
2300
2200
2100
2000
0
−5.0•10 −15
Reduced 2−D Spectrum
Single Gaussian per Line Fit
v r
X = −0.1
Y (arcsec)
0.46
0.20
-0.05
-0.30
Hα+[NII] & [SII] − Narrow Line Fit
σ gas
v r
+0.1 0.0 -0.1
X (arcsec)
6503 6557 6610 6664 6718 6772 6825
Wavelength (Angstroms)
X = 0.0
X = +0.1
−0.51 −0.17 0.17 0.51
Y (arcsec)
σ gas (km s −1 )
500
400
300
200
100
0
0.5"
X = −0.1
X = 0.0
X = +0.1
−0.51 −0.17 0.17 0.51
Y (arcsec)
Intensity (erg s −1 cm −2 Å −1 arcsec −2 )
2.0•10 −14
1.5•10 −14
1.0•10 −14
5.0•10 −15
F (10 −14 ergs s −1 cm −2 Hz −1 )
45
35
25
15
5
−5
5
4
3
2
1
0
2.5
2.0
1.5
1.0
0
−5.0•10 −15
σ gas
+0.1 0.0 -0.1
X (arcsec)
[NII] 6585 Flux
X = −0.1
X = 0.0
X = +0.1
0.5
0.0
−0.51 −0.17 0.17 0.51
Y (arcsec)
F([NII] 6585)
+0.1 0.0 -0.1
X (arcsec)
Hα+[NII] & [SII] − Narrow & Broad Cpt. Fit
[NII] 6585/Hα
10.0
1.0
0.1
F([NII])/F(Hα)
+0.1 0.0 -0.1
X (arcsec)
6503 6557 6610 6664 6718 6772 6825
Wavelength (Angstroms)
[NII]/Hα
X = −0.1
X = 0.0
X = +0.1
−0.51 −0.17 0.17 0.51
Y (arcsec)
Figure 3.13 Observation and fit data for NGC 4261, see Figure 3.1 for description.
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