2005A&A...435...43V

Query : 2005A&A...435...43V

2005A&A...435...43V - Astronomy and Astrophysics, volume 43543-64 (2005/5-3)

A dichotomy in the orientation of dust and radio jets in nearby low-power radio galaxies.

VERDOES KLEIJN G.A. and DE ZEEUW P.T.

Abstract (from CDS):

We examine the properties of central dust in nearby quiescent and active early-type galaxies. The active galaxies are low-power radio galaxies with Fanaroff & Riley type I or I/II radio jets. We focus on (a) the comparison of the dust distributions in the active and quiescent galaxy samples; and (b) the relation between the radio jet and dust orientations. Our main observational conclusions are: (i) in line with previous studies, the dust detection rate is higher in radio-jet galaxies than in non radio-jet galaxies; (ii) radio galaxies contain a higher fraction of regular dust ``ellipses'' compared to quiescent galaxies which contain more often irregular dust distributions; (iii) the morphology, size and orientation of dust ellipses and lanes in quiescent early-types and active early-types with kpc-scale radio jets is very similar; (iv) dust ellipses are aligned with the major axis of the galaxy, dust lanes do not show a preferred alignment except for large (>kpc) dust lanes which are aligned with the minor axis of the galaxy; and (v) as projected on the sky, jets do not show a preferred orientation relative to the galaxy major axis (and hence dust ellipses), but jets are preferentially perpendicular to dust lanes. We show that the dust ellipses are consistent with being nearly circular thin disks viewed at random viewing angles. The lanes are likely warped dust structures, which may be in the process of settling down to become regular disks or are being perturbed by a non-gravitational force. We use the observed dust-jet orientations to constrain the three-dimensional angle θDJ between jet and dust. For dust-lane galaxies, the jet is approximately perpendicular to the dust structure, while for dust-ellipse galaxies there is a much wider distribution of θDJ. We discuss two scenarios that could explain the dust/jet/galaxy orientation dichotomy. If lanes are indeed settling, then the jet orientation apparently is roughly aligned with the angular momentum of the dust before it settles. If lanes are perturbed by a jet-related force, it appears that it causes the dust to move out of its equilibrium plane in the galaxy into a plane which is perpendicular to the jet.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: elliptical and lenticular, cD - galaxies: nuclei - galaxies: jets - ISM: dust, extinction

Simbad objects: 102

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Number of rows : 102
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 3C 15 SyG 00 37 04.1107321824 -01 09 08.407668996   15.34       ~ 232 1
2 Z 479-45 rG 00 37 05.4904711536 +25 41 56.361743556   14.8       ~ 83 0
3 NGC 193 rG 00 39 18.5878961880 +03 19 52.605787764   14.3       ~ 149 1
4 NGC 207 EmG 00 39 40.718 -14 14 13.48   15.1   14.5 14.2 ~ 29 0
5 Z 384-48 rG 00 57 34.90446247 -01 23 27.5469897   14.07 15.10     ~ 269 1
6 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
7 NGC 383 AGN 01 07 24.9647814840 +32 24 45.132586200   13.6 12.14     ~ 821 3
8 NGC 541 AGN 01 25 44.3069825040 -01 22 46.086331044 13.42 13.03 12.08     ~ 219 2
9 NGC 545 BiC 01 25 59.12 -01 20 24.8   13.21 13.34     ~ 142 2
10 NGC 547 rG 01 26 00.6208982520 -01 20 42.432452268   13.16 13.34     ~ 363 4
11 NGC 741 rG 01 56 23.2 +05 37 35   13.2       ~ 309 2
12 NGC 821 AG? 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 592 0
13 Z 538-57 Sy1 02 23 11.41124925 +42 59 31.3853324   15.71 14.81     ~ 582 2
14 NGC 910 BiC 02 25 26.7924474768 +41 49 27.615017352   14.5       ~ 75 1
15 NGC 1016 GiG 02 38 19.5696395016 +02 07 09.482594448   13.3       ~ 95 0
16 NGC 1129 BiC 02 54 27.400 +41 34 46.70   14.6 13.6     ~ 126 1
17 3C 75 PaG 02 57 41.64 +06 01 28.0           ~ 312 1
18 NGC 1161 Sy2 03 01 14.1715734192 +44 53 50.674920288   13.20 12.08     ~ 84 0
19 3C 76.1 rG 03 03 15.0210658512 +16 26 18.881230884   16.00 14.86     ~ 182 2
20 NGC 1218 Sy1 03 08 26.22380005 +04 06 39.3007808   12.84       ~ 413 0
21 NGC 1265 rG 03 18 15.674 +41 51 27.94   14.7       ~ 386 2
22 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
23 Z 390-93 QSO 03 27 54.19499480 +02 33 41.9824262   13.95       ~ 230 1
24 NGC 1497 GiG 04 02 06.8061678281 +23 07 58.396530870   14.5       ~ 56 1
25 Z 329-24 Sy2 06 15 36.2812259376 +71 02 14.837219808 14.21 14.03 12.97     ~ 960 2
26 NGC 2258 AGN 06 47 46.2009489480 +74 28 54.536253852   13.2       ~ 66 0
27 NGC 2329 rG 07 09 08.0049393360 +48 36 55.726108020   13.7 13.99     ~ 143 3
28 NGC 2300 AG? 07 32 20.486 +85 42 31.90   12.2       ~ 346 0
29 NGC 2768 SyG 09 11 37.504 +60 02 13.95 11.30 10.84 9.87     ~ 526 2
30 Z 151-55 AGN 09 18 57.9197964240 +31 51 10.798451460   15.5       ~ 64 1
31 NGC 2832 LIN 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 274 3
32 NGC 2872 rG 09 25 42.5308974048 +11 25 55.727649480   13.0       ~ 89 0
33 NGC 2892 rG 09 32 52.9316927952 +67 37 02.634719448   14.4       ~ 77 1
34 NGC 2911 Sy2 09 33 46.10739467 +10 09 08.8215304   14.96 13.83     ~ 259 0
35 NGC 3348 GiG 10 47 10.0367649672 +72 50 22.685834940   12.0       ~ 127 0
36 NGC 3516 Sy1 11 06 47.4632200800 +72 34 07.298374656   13.12 12.40     ~ 1638 0
37 NGC 3610 GiG 11 18 25.2827189856 +58 47 10.433735988   11.4       ~ 327 0
38 NGC 3613 GiG 11 18 36.130 +57 59 59.73   11.6       ~ 221 0
39 4C -03.43 rG 11 33 05.1119564064 -04 00 47.667566484   14.67       ~ 58 1
40 NGC 3801 LIN 11 40 16.9446846648 +17 43 40.575768960   13.3       ~ 214 1
41 NGC 3842 BiC 11 44 02.155 +19 56 59.37 14.22 13.70 11.82 12.04   ~ 308 3
42 NGC 3862 Sy2 11 45 05.00904503 +19 36 22.7409909   14.98 13.97     ~ 646 1
43 NGC 3894 Bla 11 48 50.35817663 +59 24 56.3822416   12.9   11.57   ~ 268 1
44 NGC 3962 LIN 11 54 40.0986420456 -13 58 30.234748836   13.16 12.16 11.15   ~ 162 1
45 NGC 4073 BiC 12 04 27.0598775760 +01 53 45.611893752   13.8 13.21 14.249   ~ 211 1
46 Z 128-34 LIN 12 08 05.5490514552 +25 14 14.260024176   14.4       ~ 90 0
47 NGC 4125 GiP 12 08 06.017 +65 10 26.88 11.14 10.65 9.72     ~ 448 2
48 NGC 4168 Sy2 12 12 17.2692381408 +13 12 18.688208724 12.58 12.11 11.18     ~ 393 1
49 NGC 4261 LIN 12 19 23.2160630 +05 49 29.700024   13.92 12.87     ~ 1290 0
50 NGC 4335 rG 12 23 01.8844 +58 26 40.378   13.7       ~ 90 1
51 NGC 4365 GiG 12 24 28.228 +07 19 03.07   11.5       ~ 871 0
52 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1841 2
53 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
54 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
55 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 671 1
56 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
57 NGC 4494 GiP 12 31 24.0391348536 +25 46 30.071664120   10.55 9.74     ~ 491 0
58 NGC 4526 GiC 12 34 03.02853 +07 41 56.9040   10.6       ~ 707 0
59 M 89 Sy2 12 35 39.80733343 +12 33 22.8308657 11.29 10.73 9.75     ~ 1037 2
60 NGC 4589 LIN 12 37 24.9947272593 +74 11 30.861224110   12.0       ~ 300 1
61 M 59 GiG 12 42 02.2581375168 +11 38 48.909507756   11.0       ~ 721 0
62 M 60 GiC 12 43 39.9708251934 +11 33 09.688174067   10.3       ~ 1395 1
63 NGC 4807 GiP 12 55 29.1008459472 +27 31 17.156306460   14.50 13.50     ~ 105 1
64 NGC 4816 GiG 12 56 12.1508733240 +27 44 43.773192276 14.25 13.80 12.84     ~ 145 1
65 NGC 4869 EmG 12 59 23.3588349024 +27 54 41.731884360 15.03 14.9 13.52 13.292 12.536 ~ 286 0
66 NGC 4881 LIN 12 59 57.7481819280 +28 14 48.009858036 15.03 14.7 13.56     ~ 190 0
67 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 742 1
68 NGC 4952 LIN 13 04 58.3849361808 +29 07 20.011981188   13.39 13.01     ~ 98 1
69 NGC 4957 GiG 13 05 12.3897926664 +27 34 11.130658716   14.2   14.62   ~ 92 0
70 NGC 5127 LIN 13 23 45.0315298080 +31 33 56.527040808   13.9       ~ 183 0
71 NGC 5141 Sy2 13 24 51.44109717 +36 22 42.7725745   13.9       ~ 192 1
72 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
73 NGC 5252 Sy2 13 38 15.8707724328 +04 32 33.521265600   15.21 14.21     ~ 514 1
74 ACO 1775 ClG 13 41 50.60 +26 21 10.6           ~ 324 0
75 Z 162-10 LIN 13 48 52.4892734448 +26 35 34.353002688   14.0       ~ 241 2
76 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 432 2
77 NVSS J140000+283038 rG 14 00 00.47 +28 30 38.2           ~ 38 1
78 NGC 5490 GiG 14 09 57.330 +17 32 43.53   13.4 15.5     ~ 178 1
79 NGC 5532 LIN 14 16 52.9370483073 +10 48 26.616631120   13.3 12.59     ~ 364 2
80 NGC 5557 GiG 14 18 25.708 +36 29 37.28   12.2       ~ 237 0
81 7C 1457+2915 BLL 14 59 41.9530973616 +29 03 31.813059816           ~ 28 1
82 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 673 2
83 NGC 5846 rG 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 891 2
84 7C 151131.1+261840 Sy2 15 13 40.0235447784 +26 07 23.749576572   16.30       ~ 239 1
85 Z 49-90 Sy2 15 16 44.4893939136 +07 01 17.825410740   15.19 14.17     ~ 463 4
86 NVSS J152744+285506 rG 15 27 44.4099822504 +28 55 06.607834248           ~ 77 1
87 NGC 5982 LIN 15 38 39.778 +59 21 21.21   12.4       ~ 302 0
88 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
89 NGC 6211 Sy2 16 41 27.6839650368 +57 47 01.110713676   13.8       ~ 56 1
90 4C -00.67 Sy2 17 20 28.1680537512 -00 58 46.582453920   15.36       ~ 345 1
91 NGC 6703 AG? 18 47 18.8166660360 +45 33 02.274865812   12.29 11.34     ~ 225 0
92 Z 257-7 LSB 19 41 45.9805683216 +50 35 45.372755328   14.9 14.0     ~ 113 1
93 NGC 7052 rG 21 18 33.0441963648 +26 26 49.174586196 15.52 14.85 13.09     ~ 348 1
94 NGC 7236 LIN 22 14 44.9886363216 +13 50 47.450963760   14.3 14.3     ~ 286 1
95 Z 514-50 SyG 22 31 20.5885689288 +39 21 29.593072404   14.6       ~ 446 1
96 NGC 7318A GiP 22 35 56.70407 +33 57 55.7710   14.4   13.13   ~ 140 0
97 3C 452 Sy2 22 45 48.7616172744 +39 41 15.906782184   17.60 16.56     ~ 391 1
98 NGC 7562 GiP 23 15 57.4982037648 +06 41 15.227839176   13.0       ~ 173 0
99 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 472 0
100 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 438 1
101 NGC 7720 Sy1 23 38 29.38324020 +27 01 53.2580084   13.9 13.3     ~ 565 4
102 NGC 7785 AG? 23 55 19.0388560224 +05 54 56.735224164   13.00       ~ 179 1

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