2003MNRAS.340..793W

Query : 2003MNRAS.340..793W

2003MNRAS.340..793W - Mon. Not. R. Astron. Soc., 340, 793-798 (2003/April-2)

The size of the broad-line regions in dwarf active galaxies.

WANG T.-G. and ZHANG X.-G.

Abstract (from CDS):

Using the empirical relation between black hole mass and bulge velocity dispersion established for active and quiescent galaxies, we derive the sizes of the broad-line regions (BLRs) for 22 dwarf active galaxies. These sizes are compared with those of Seyfert 1 galaxies and quasars. We find that the size of the BLRs of Seyfert 1s and quasars is well scaled with the luminosity of the Hα line with a slope of ≃0.5, and dwarf active galaxies show larger BLRs than the values predicted by the BLR size-luminosity relation for Seyfert 1 galaxies and quasi-stellar objects (QSOs). The results suggest that the BLRs of dwarf active galactic nuclei (AGN) have lower ionization or/and lower density than those of Seyfert 1 galaxies and QSOs. Photoionization calculations show that the large BLRs are consistent with observed emission line spectra.

Abstract Copyright: 2003 RAS

Journal keyword(s): black hole physics - galaxies: active - galaxies: dwarf - galaxies: kinematics and dynamics

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
2 NGC 1052 Bla 02 41 04.79849989 -08 15 20.7519527 11.84 11.41 10.47 10.71   ~ 1397 2
3 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
4 NGC 1161 Sy2 03 01 14.1715734192 +44 53 50.674920288   13.20 12.08     ~ 84 0
5 NGC 2787 LIN 09 19 18.6046606656 +69 12 11.630716128   12.92 11.79     ~ 381 0
6 NGC 2985 Sy2 09 50 22.233 +72 16 43.13   11.37 10.61     ~ 269 1
7 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
8 NGC 3065 GiP 10 01 55.2298337568 +72 10 13.113502068   14.17 13.19     ~ 129 0
9 NGC 3226 rG 10 23 27.0064075320 +19 53 54.674937420   14.32 13.33     ~ 440 1
10 NGC 3642 LIN 11 22 17.9010437568 +59 04 28.275641436   14.86 14.04     ~ 220 0
11 NGC 3718 Sy2 11 32 34.8571790688 +53 04 04.520222040   11.35 10.61     ~ 408 1
12 NGC 3998 Sy2 11 57 56.1334044408 +55 27 12.922443432   11.64 12.10 10.09   ~ 682 2
13 NGC 4036 LIN 12 01 26.7603659808 +61 53 44.625848784   12.18 11.20     ~ 282 0
14 NGC 4143 LIN 12 09 36.0679174440 +42 32 03.031963368   13.04 12.08     ~ 251 0
15 NGC 4203 LIN 12 15 05.0549203560 +33 11 50.383965120   12.98 11.99     ~ 514 2
16 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2512 4
17 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
18 NGC 4395 Sy2 12 25 48.8633109888 +33 32 48.700168152 10.84 10.54 10.11 9.98   ~ 1286 1
19 NGC 4450 LIN 12 28 29.5910654016 +17 05 05.976112020   10.90 10.08     ~ 587 2
20 NGC 4452 GiG 12 28 43.2980346552 +11 45 18.201826692 13.27 12.87 11.98     ~ 215 1
21 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
22 M 58 Sy2 12 37 43.59747 +11 49 05.1240 10.80 10.48 9.66     ~ 1140 2
23 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 570 0
24 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1156 1
25 NGC 5077 rG 13 19 31.66962921 -12 39 25.0765176   13.87 12.85 11.30   ~ 312 1
26 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
27 Z 252-40 Bla 17 19 14.4925971408 +48 58 49.423205136   15.86 14.81 9.44   ~ 335 1
28 NGC 7479 Sy2 23 04 56.6432243448 +12 19 22.357387020 11.74 11.60 10.85 10.47 9.66 ~ 783 2

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