Table 6
Masses and accretion rates in nuclei of chosen AGN.
| Object | log (MBH/M⊙) | log (Mdisk/M⊙) | Radius/pc | MBH/Mdisk | Lacc/LEdd | ṀBH/M⊙ |
|
|
||||||
| NGC 1068 | 6.94 (1) | 8.08 (2) | 35 (2) | 0.07 | 0.339 (1) | 3.06 × 10-2 |
| NGC 3227 | 7.59 (1) | 7.30a (3) | 63 (3) | 1.95 | 0.022 (1) | 8.88 × 10-3 |
| NGC 3783 | 7.47 (1) | 7.30–7.85 (2) | 60 (2) | 1.48–0.42 | 0.053 (1) | 1.62 × 10-2 |
| NGC 7469 | 7.09 (1) | 7.56a (4) | 65 (4) | 0.34 | 0.157 (1) | 2.00 × 10-2 |
Notes. For each object (Col. 1), in Col. 2 the black hole mass is given as estimated from reverberation mapping except for NGC 1068, for which the dynamical mass estimate is given. Column 3 gives the disk mass inside the radius denoted in Col. 4, either estimated from the dynamical mass or from the K-band luminosity. Column 5 gives the efficiency of accretion luminosity ϵL = Lacc/LEdd from observation, from which the accretion rate ṀBH = ϵL/ϵM·(1 − ϵM)·MBH/τ can be calculated, where ϵM is the mass accretion efficiency with a typical value of 0.3 and τ is the characteristical accretion timescale with a value of ≈0.23 Gyr (see Shapiro 2005).
Reference. (1) Khorunzhev et al. (2012); (2) Davies et al. (2007); (3) Davies et al. (2006); (4) Davies et al. (2004).
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