2002A&A...392...53N


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.10CEST21:12:16

2002A&A...392...53N - Astronomy and Astrophysics, volume 392, 53-82 (2002/9-2)

Radio sources in low-luminosity active galactic nuclei. III. "AGNs" in a distance-limited sample of "LLAGNs".

NAGAR N.M., FALCKE H., WILSON A.S. and ULVESTAD J.S.

Abstract (from CDS):

This paper presents the results of a high resolution radio imaging survey of all known (96) low-luminosity active galactic nuclei (LLAGNs) at D≤19. We first report new 2cm (150mas resolution using the VLA) and 6cm (2mas resolution using the VLBA) radio observations of the previously unobserved nuclei in our samples and then present results on the complete survey. We find that almost half of all LINERs and low-luminosity Seyferts have flat-spectrum radio cores when observed at 150mas resolution. Higher (2mas) resolution observations of a flux-limited subsample have provided a 100% (16 of 16) detection rate of pc-scale radio cores, with implied brightness temperatures >108K. The five LLAGNs with the highest core radio fluxes also have pc-scale ``jets''. Compact radio cores are almost exclusively found in massive ellipticals and in type 1 nuclei (i.e. nuclei with broad Hα emission). Only a few ``transition'' nuclei have compact radio cores; those detected in the radio have optical emission-line diagnostic ratios close to those of LINERs/Seyferts. This indicates that some transition nuclei are truly composite Seyfert/LINER+HII region nuclei, with the radio core power depending on the strength of the former component. The core radio power is correlated with the nuclear optical ``broad'' Hα luminosity, the nuclear optical ``narrow'' emission-line luminosity and width, and with the galaxy luminosity. In these correlations LLAGNs fall close to the low-luminosity extrapolations of more powerful AGNs. The scalings suggest that many of the radio-non-detected LLAGNs are simply lower power versions of the radio-detected LLAGNs. The ratio of core radio power to nuclear optical emission-line luminosity increases with increasing bulge luminosity for all LLAGNs. Also, there is evidence that the luminosity of the disk component of the galaxy is correlated with the nuclear emission-line luminosity (but not the core radio power). About half of all LLAGNs with multiple epoch data show significant inter-year radio variability. Investigation of a sample of ∼150 nearby bright galaxies, most of them LLAGNs, shows that the nuclear (≤150mas size) radio power is strongly correlated with both the black hole mass and the galaxy bulge luminosity; linear regression fits to all ∼150 galaxies give: logP2cm=1.31(±0.16)log(MMDO)+8.77 and logP2cm=1.89(±0.21)log[LB(bulge)]-0.17. Low accretion rates (≤10–2-10–3 of the Eddington rate) are implied in both advection- and jet-type models. In brief, all evidence points towards the presence of accreting massive black holes in a large fraction, perhaps all, of LLAGNs, with the nuclear radio emission originating in either the accretion inflow onto the massive black hole or from jets launched by this black hole-accretion disk system.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - galaxies: active - galaxies: jets - galaxies: nuclei - radio continuum: galaxies - surveys

Status at CDS:  

Simbad objects: 81

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Number of rows : 81

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 428 AGN 01 12 55.709 +00 58 53.69   12.1   12.0 12.1 ~ 205 0
2 NGC 660 LIN 01 43 02.350 +13 38 44.45   12.02 11.16     ~ 503 2
3 IC 1727 GiP 01 47 29.890 +27 20 00.06   12.54 11.98 11.77   ~ 174 0
4 IC 239 GiG 02 36 27.8261541832 +38 58 09.081767475   12.1   12.75   ~ 93 0
5 NGC 1055 GiP 02 41 45.233 +00 26 35.45 11.59 11.40 10.59 10.5 10.7 ~ 256 2
6 NGC 1058 Sy2 02 43 30.0247243235 +37 20 28.807743477   12.29 11.75 10.85   ~ 431 0
7 ICRF J041045.6+765645 AGN 04 10 45.61081971 +76 56 45.3105471   21 22.0 21.200   ~ 142 1
8 NGC 2541 GiG 08 14 40.1104536348 +49 03 42.058472450 12.03 12.26 11.80     ~ 275 1
9 NGC 2683 AGN 08 52 41.345 +33 25 18.48 11.57 10.68 9.79 9.38   ~ 378 1
10 NGC 2685 Sy2 08 55 34.7056265191 +58 44 03.877798862   13.68 12.70     ~ 402 1
11 NGC 2655 LIN 08 55 37.731 +78 13 23.10   12.03 11.08     ~ 254 1
12 NGC 2787 LIN 09 19 18.6043000282 +69 12 11.642887220   12.92 11.79     ~ 312 0
13 NGC 2841 LIN 09 22 02.655 +50 58 35.32 10.43 10.09 9.22     ~ 975 1
14 ICRF J092703.0+390220 Sy1 09 27 03.0139516273 +39 02 20.847968628   17.17 17.00 16.486   ~ 926 1
15 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 3932 5
16 NGC 3147 Sy2 10 16 53.632 +73 24 02.34   11.43 10.61     ~ 420 2
17 M 96 GiP 10 46 45.744 +11 49 11.78 10.42 10.15 9.25 8.99   ~ 736 1
18 M 105 LIN 10 47 49.600 +12 34 53.87   10.56 9.76 9.12 8.18 ~ 1373 0
19 NGC 3489 GiG 11 00 18.5473550222 +13 54 04.215155077 11.46 11.12 10.29     ~ 357 1
20 NGC 3486 Sy2 11 00 23.946 +28 58 29.35 10.89 11.11 10.53 10.40   ~ 314 1
21 M 65 GiP 11 18 55.957 +13 05 31.96   9.6       ~ 401 1
22 M 66 GiP 11 20 15.026 +12 59 28.64 9.85 9.65 8.92     ~ 1144 4
23 NGC 3628 GiP 11 20 17.018 +13 35 22.16   10.42 9.48 9.22   ~ 741 3
24 NGC 3675 GiG 11 26 08.584 +43 35 09.30   11.04   9.57   ~ 259 1
25 NGC 3718 GiP 11 32 34.8527469396 +53 04 04.494313634   11.35 10.61     ~ 337 1
26 NGC 3941 Sy2 11 52 55.360 +36 59 10.96   11.45 11.62 9.97   ~ 216 0
27 NGC 3982 Sy1 11 56 28.169 +55 07 31.30   12.20 11.70 11.18   ~ 481 1
28 NGC 4013 GiG 11 58 31.417 +43 56 49.28   12.4       ~ 357 1
29 NGC 4051 Sy1 12 03 09.6098828919 +44 31 52.693714606   11.08 12.92 9.94   ~ 1973 1
30 NGC 4138 Sy1 12 09 29.788 +43 41 07.14 12.46 12.29 11.32 10.82   ~ 340 1
31 NGC 4143 LIN 12 09 36.086 +42 32 03.18   13.04 12.08     ~ 209 0
32 NGC 4150 GiG 12 10 33.655 +30 24 05.35 12.72 12.44 11.64     ~ 282 2
33 NGC 4168 Sy1 12 12 17.234 +13 12 19.27 12.58 12.11 11.18     ~ 350 2
34 NGC 4203 LIN 12 15 05.0543630359 +33 11 50.401356393   12.98 11.99     ~ 448 2
35 NGC 4216 GiP 12 15 54.444 +13 08 57.84 11.51 10.99 10.01     ~ 368 1
36 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2095 3
37 NGC 4278 LIN 12 20 06.82563 +29 16 50.7124 11.54 11.09 10.16     ~ 881 2
38 NGC 4293 LIN 12 21 12.891 +18 22 56.64   11.6       ~ 248 2
39 NGC 4314 LIN 12 22 31.978 +29 53 43.09 11.72 11.43 10.58     ~ 446 1
40 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1630 2
41 NGC 4346 GiG 12 23 27.942 +46 59 37.97   12.3       ~ 102 0
42 NGC 4350 GiP 12 23 57.814 +16 41 36.08   11.5 11.08     ~ 290 0
43 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1625 2
44 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1169 2
45 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 976 1
46 NGC 4394 GiP 12 25 55.6370604801 +18 12 50.115665445   11.9       ~ 331 0
47 NGC 4414 GiG 12 26 27.089 +31 13 24.76 11.12 10.96 10.12     ~ 509 2
48 NGC 4419 LIN 12 26 56.433 +15 02 50.72 12.42 12.08 11.16     ~ 364 1
49 NGC 4438 LIN 12 27 45.652 +13 00 30.92 11.37 11.02 10.17     ~ 571 3
50 NGC 4450 LIN 12 28 29.634 +17 05 05.82   10.90 10.08     ~ 504 1
51 NGC 4457 LIN 12 28 59.011 +03 34 14.19   11.9       ~ 250 0
52 NGC 4459 H2G 12 29 00.026 +13 58 42.89   11.6       ~ 489 0
53 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 1945 2
54 NGC 4477 Sy2 12 30 02.172 +13 38 11.19 11.98 11.38 10.42     ~ 357 2
55 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6127 3
56 NGC 4494 GiP 12 31 24.034 +25 46 29.93   10.55 9.74     ~ 446 0
57 M 88 Sy2 12 31 59.216 +14 25 13.48   14.33 13.18     ~ 722 1
58 M 91 LIN 12 35 26.430 +14 29 46.75   14.63 13.57     ~ 521 0
59 M 89 LIN 12 35 39.8 +12 33 23 11.29 10.73 9.75     ~ 916 2
60 NGC 4565 LIN 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 858 0
61 M 58 SyG 12 37 43.597 +11 49 05.12 10.80 10.48 9.66     ~ 961 2
62 NGC 4596 GiP 12 39 55.9543662681 +10 10 34.181826559   12.4       ~ 327 0
63 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 548 0
64 NGC 4636 LIN 12 42 49.867 +02 41 16.01   12.62 11.84     ~ 1032 1
65 NGC 4698 Sy2 12 48 22.9112380605 +08 29 14.648866444   13.24 12.27     ~ 435 0
66 NGC 4713 GiG 12 49 57.8808487310 +05 18 40.927534284   12.3       ~ 265 0
67 NGC 4725 Sy2 12 50 26.5692916552 +25 30 02.737610391   13.45 12.44     ~ 614 2
68 M 94 SyG 12 50 53.148 +41 07 12.55 9.15 8.96 8.24 7.78   ~ 1205 3
69 NGC 4762 LIN 12 52 56.049 +11 13 50.88   11.1       ~ 332 0
70 NGC 4772 LIN 12 53 29.1636622578 +02 10 06.133021648 12.29 11.96 11.04     ~ 216 1
71 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 803 2
72 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3741 4
73 NGC 5195 GiP 13 29 59.590 +47 15 58.06 10.76 10.45 9.55 9.31   ~ 688 3
74 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3674 1
75 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 495 3
76 NGC 5879 AGN 15 09 46.7282797389 +57 00 00.544806616   11.9       ~ 219 1
77 6C 164218+690201 QSO 16 42 07.84850549 +68 56 39.7564973   19.723   19.219   ~ 281 1
78 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1541 2
79 NGC 6503 LIN 17 49 26.4206717057 +70 08 39.587370580 11.56 10.95 10.28 9.92   ~ 464 1
80 NGC 7177 LIN 22 00 41.250 +17 44 17.22   12.2       ~ 184 0
81 NGC 7331 LIN 22 37 04.102 +34 24 57.31 10.65 10.35 9.48     ~ 1099 2

    Equat.    Gal    SGal    Ecl

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2020.04.10-21:12:16

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