Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

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presented in Appendix A of Verdoes Kleijn et al., 2002a). Verdoes Kleijn et al. (1999) obtained V - and I-band images and narrow-band images centered on the Hα + [N II] emission lines. They found that although obscuration by dust prevents satisfactory determinations of the central cusp slopes, that the data suggest that most of the sample galaxies have shallow cores. Dust is detected in all but two galaxies and central emission line gas is detected in all of the galaxies in the sample. There are a wide variety of central dust morphologies, ranging from central disks to lanes and irregular distributions; the dust morphologies for each individual source are described in §3.4. 2.3 Stellar Dynamics We estimate the central stellar velocity dispersion (σc) within one eighth of the effective radius (re/8) using the relationship � � σap σc = 30 � �−0.04 rap , (2.3) re/8 as described by Jørgensen et al. (1995) and basing σap on ground based measurements from various sources as referenced in Table 2.3. We found the effective radii of the sample nuclei using the WFPC2 imaging de-
scribed by Verdoes Kleijn et al. (1999), and fitting a r 1/4 -law profile of the form I = I0 exp (−7.67(x/re) 0.25 − 1) (2.4) to the stellar surface brightness profile outside of the break radius. This procedure to find σc follows the same prescription as Ferrarese & Merritt (2000). Using their relationship between σc and M• (Merritt & Ferrarese, 2001): M• = 1.30 × 10 8 M⊙ � σc 200kms −1 31 � 4.72 , (2.5) we estimate values of M• for our sample galaxies. The stellar velocity dispersions and black hole mass estimates are listed in Table 2.3, where we also give measured black hole masses for the 5 sample galaxies for which such data exist. The five measured black hole masses are plotted on a M• − σc diagram including all reliable black hole masses (cf Figure 1.8) in Figure 2.22. Variations of this relationship give different values for M•, however for our pur- poses in this dissertation we will give black hole mass estimates based on the above relationship and remind the reader that the masses may vary somewhat from these values.
Page 1 and 2: Gas Disks and Supermassive Black Ho
Page 3 and 4: Abstract Gas Disks and Supermassive
Page 5 and 6: Contents 1 Introduction 1 1.1 Radio
Page 7 and 8: 4.2.3 Stellar luminosity densities
Page 9 and 10: List of Tables 1.1 Properties of va
Page 11 and 12: 5.1 Weighted mean kinematic paramet
Page 13 and 14: 2.12 Optical continuum image of the
Page 15 and 16: 4.14 Data-Model residuals with vary
Page 17 and 18: Acknowledgments First I would like,
Page 19 and 20: Chapter 1 Introduction The relation
Page 21 and 22: 1.1 Radio galaxies A radio galaxy c
Page 23 and 24: This thesis focuses on a sample of
Page 25 and 26: et al., 2000; Tomita et al., 2000;
Page 27 and 28: larger than the generally expected
Page 29 and 30: most reliable is, of course, by the
Page 31 and 32: galaxies were obtained with the Fai
Page 33 and 34: • What connections can be found b
Page 35 and 36: Table 1.2. Reliable black hole mass
Page 37 and 38: Figure 1.2 An example of a FR-I (le
Page 39 and 40: Figure 1.4 From Martel et al. (2000
Page 41 and 42: Figure 1.6 The famous cartoon by Ph
Page 43 and 44: M BH (M Sun) 10 10 10 9 10 8 10 7 1
Page 45 and 46: dish flux density measurements at 1
Page 47: 2.2.1 Radio properties Radio observ
Page 51 and 52: Table 2.2. Multiwavelength Fluxes o
Page 53 and 54: 0.5" Figure 2.1 Optical continuum i
Page 63 and 64: 0.5" Figure 2.11 Optical continuum
Page 75 and 76: Chapter 3 STIS spectroscopy of the
Page 77 and 78: spectra in a future paper. We inclu
Page 79 and 80: 3.2.1 Data Reduction We used the st
Page 81 and 82: λvac − λair λair = 6.4328 × 1
Page 83 and 84: line flux of the Hα line and colum
Page 85 and 86: 3.3.3 Quantifying error sources The
Page 87 and 88: and velocity dispersions (dominated
Page 89 and 90: slits were aligned to a mean of the
Page 91 and 92: windows. The central kinematic and
Page 93 and 94: (slit one) than the central positio
Page 95 and 96: (see key in Figure 3.1 for an expla
Page 97 and 98: the gas exhibits a regular rotation
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show the relationship between the t
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3.5.2 Flux ratios and ionization In
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them to the samples of LINERS by Ho
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lines. 5. Flux-unconstrained Broad
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Table 3.1. HST-STIS G750M observing
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Table 3.3. Position angles of vario
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Table 3.5. NGC 193: Measured Parame
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Table 3.11. NGC 2329: Measured Para
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Table 3.15. UGC 7115: Measured Para
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Table 3.27. Presence of a Nuclear B
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Table 3.29. Fits to the central pix
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Table 3.31. Comparison of broad lin
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(a) (b) (i) (ii) (c) (i) (ii) (iii)
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Intensity (erg s −1 cm −2 Å
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Page 155 and 156:
Page 157 and 158:
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Difference in mean velocity on each
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Mean velocity dispersion (km s -1 )
Page 165 and 166:
Chapter 4 Modeling gas in gravitati
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4.2 Thin disk models with and witho
Page 169 and 170:
gas disks were computed by making a
Page 171 and 172:
intensity contours are aligned conc
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4.2.4 Dynamical models As discussed
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are described in Appendix A of van
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models integrating using 150 by 150
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models. Pronounced differences can
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NGC 383: This S0 galaxy has a nucle
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at an offset of 80 km s −1 , equi
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gas velocities are very well settle
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NGC 5141: This S0 galaxy has a nucl
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e compatible with a ∼ 9 × 10 8 M
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hole masses for these galaxies. The
Page 193 and 194:
numerical approaches they made the
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In the positive offset slit of NGC
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4.5 Conclusions In this chapter we
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low statistical significance) possi
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Table 4.2. STIS PSF Parameters. Gau
Page 203 and 204:
Table 4.4. Mass to light ratio (Υ)
Page 205 and 206:
Table 4.6. Black hole signatures in
Page 207 and 208:
weighted 600 500 400 300 200 100 =
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weighted 600 500 400 300 200 100 =
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weighted 500 400 300 200 100 = 0. k
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weighted 500 400 300 200 100 = 37.
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weighted 500 400 300 200 100 = 50.
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weighted 600 500 400 300 200 100 =
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weighted 500 400 300 200 100 = -50.
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weighted 800 600 400 200 = 280. km
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weighted 500 400 300 200 100 = -47.
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Gas Radial Velocity (km s -1 ) 400
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Gas Radial Velocity (km s -1 ) Gas
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Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Gas Radial Velocity (km s -1 ) 300
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Page 243 and 244:
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v r (km s −1 ) 5000 4800 4600 440
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v r (km s −1 ) 4700 4600 4500 440
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M BH (M Sun) 10 10 10 9 10 8 10 7 1
Page 253 and 254:
We showed that the mean dispersions
Page 255 and 256:
within 100 pc of the nucleus: � N
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as face on disks are approached; th
Page 259 and 260:
the inclination of the dust disk. O
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where we observe smaller and larger
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on scales of 1/8 the Effective radi
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may have some connections with the
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is well correlated with σc (correl
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e primarily driven by the central e
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organized rotation. This supports t
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Table 5.1. Weighted mean kinematic
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Table 5.3. Correlations between kin
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σ100 (km s -1 −−− ) 500 400
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−−− 2 2 σ100 / ∆100 100.00
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ε 100 (km s -1 ) 250 200 150 100 5
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∆ 100 (km s -1 ) 500 400 300 200
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ε 100 (km s -1 ) 250 200 150 100 5
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V-Band I-Band VLA Peak VLBA Peak 10
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42 41 40 39 38 M87 nuclear SED 37 8
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ased on the gas kinematics? • How
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emaining galaxies may be of particu
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in nearby galaxies, and is being us
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of the features observed in the vel
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From the work presented in this dis
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Comparing samples of active and qui
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Bower, G. A., Green, R. F., Danks,
Page 305 and 306:
Herrnstein, J. R., Moran, J. M., Gr
Page 307 and 308:
Quataert, E., & Narayan, R. 2001, A
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Gas Disks and Supermassive Black Holes in Nearby Radio Galaxies

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