2019A&A...631A.176C

Query : 2019A&A...631A.176C

2019A&A...631A.176C - Astronomy and Astrophysics, volume 631A176-176 (2019/11-1)

The low-frequency properties of FR 0 radio galaxies.

CAPETTI A., BALDI R.D., BRIENZA M., MORGANTI R. and GIOVANNINI G.

Abstract (from CDS):

Using the alternative data release of the TIFR GMRT Sky Survey (TGSS), we studied the low-frequency properties of FR 0 radio galaxies, the large population of compact radio sources associated with red massive early-type galaxies revealed by surveys at 1.4GHz. We considered TGSS observations from FR0CAT, a sample formed by 104 FR 0s at z<0.05: all but one of them are covered by the TGSS, and 43 of them are detected above a 5σ limit of 17.5mJy. No extended emission has been detected around the FR 0s, corresponding to a luminosity limit of ≤4x1023W/Hz over an area of 100kpcx100kpc. All but eight FR 0s have a flat or inverted spectral shape (α<0.5) between 150 MHz and 1.4GHz: this spectral behavior confirms the general paucity of optically thin extended emission within the TGSS beam, as is expected for their compact 1.4GHz morphology. Data at 5GHz were used to build their radio spectra, which are also generally flat at higher frequencies. By focusing on a sub-sample of FR 0s with flux density >50mJy at 1.4GHz, we found that ∼75% of them have a convex spectrum, but with a smaller curvature than the more powerful gigahertz peaked-spectrum sources (GPS). The typical FR 0s radio spectrum is better described by a gradual steepening toward high frequencies, rather than to a transition from an optically-thick to an optically-thin regime, possibly observed in only ∼15% of the sample.

Abstract Copyright: © ESO 2019

Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: jets - radio continuum: galaxies

Simbad objects: 105

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Number of rows : 105
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 NVSS J010852-003922 rG 01 08 52.4827114800 -00 39 19.360390032   16.31   15.06   ~ 21 0
2 UGC 753 rG 01 12 04.6196203344 -00 14 42.440588808   16.5       ~ 32 0
3 NVSS J011515+001247 rG 01 15 15.7840956960 +00 12 48.538049652   15.68 15.0     ~ 80 1
4 NGC 707 LIN 01 51 27.1003952064 -08 30 19.343130444   14   12.83   ~ 40 1
5 MCG-02-06-029 Sy2 02 08 35.8301670936 -08 37 55.289274384   15   13.67   ~ 31 0
6 LEDA 3090833 LIN 07 53 54.9791477304 +13 09 16.573439736           ~ 31 0
7 Z 88-35 LIN 08 07 16.5846688560 +14 57 03.311893944   15.3       ~ 33 1
8 2MASX J08315858+5620520 LIN 08 31 58.5030483984 +56 20 52.302672456           ~ 24 0
9 2MASX J08351196+0518291 LIN 08 35 11.9872818864 +05 18 29.306197116           ~ 26 0
10 Z 288-4 LIN 08 41 02.7334074192 +59 56 10.597464528   15.5       ~ 26 0
11 NVSS J084701+100107 rG 08 47 01.8888474984 +10 01 06.561654276           ~ 24 0
12 Z 209-27 Bla 09 06 52.7960243666 +41 24 29.642843168   15.1       ~ 67 1
13 LEDA 165523 G 09 07 34.911 +32 57 22.97           ~ 34 0
14 Z 91-10 LIN 09 09 37.4414 +19 28 08.297   15.7       ~ 61 1
15 NGC 2774 LIN 09 10 39.9249307685 +18 41 47.701359581   14.8       ~ 35 1
16 NGC 2794 LIN 09 16 01.7918823864 +17 35 23.329820904   14.0       ~ 52 1
17 NVSS J091754+133145 rG 09 17 54.2627045256 +13 31 45.542006148           ~ 12 0
18 Z 181-48 LIN 09 30 03.5628394152 +34 13 25.345594848   15.7       ~ 33 0
19 NGC 2911 Sy2 09 33 46.10739467 +10 09 08.8215304   14.96 13.83     ~ 259 0
20 NVSS J093939+385357 rG 09 39 38.6345978208 +38 53 58.638855840           ~ 19 0
21 NGC 2965 Bla 09 43 19.15347161 +36 14 52.0723746   17.17 16.38 8.87   ~ 91 1
22 IC 590 rG 10 05 49.8276132120 +00 38 00.094701480   14.2       ~ 49 0
23 Z 36-62 LIN 10 13 29.6583082200 +07 54 15.629345532   15.7       ~ 31 0
24 2dFGRS TGN356Z056 Sy2 10 18 06.6779409000 +00 05 59.766499680   17.94 17.34 15.135   ~ 42 0
25 NVSS J102402+420632 rG 10 24 03.2799780264 +42 06 29.778743808           ~ 19 0
26 Z 94-43 rG 10 25 11.4980301096 +17 15 20.017134684   15.1       ~ 30 0
27 LEDA 1378581 LIN 10 25 44.2142 +10 22 30.474           ~ 39 1
28 Z 212-30 LIN 10 37 19.3424977080 +43 35 15.305053488   14.6       ~ 91 1
29 Malin 2 LIN 10 39 52.4820927048 +20 50 49.375560660   14.20       ~ 104 0
30 NGC 3332 LIN 10 40 28.3761501240 +09 10 57.187143192   13.7       ~ 99 1
31 Z 212-44 LIN 10 44 03.6898752840 +43 54 12.117350808   14.8       ~ 40 1
32 NGC 3387 LIN 10 48 11.9092206096 +04 59 54.891383064   14.8       ~ 45 0
33 Z 241-17 Sy2 10 48 52.9227011112 +48 03 14.762526804   16.0       ~ 38 1
34 NGC 3468 Bla 10 57 31.1758726801 +40 56 46.117028267   14.2       ~ 66 1
35 NGC 3561 LIN 11 11 13.1887412409 +28 41 47.044176908   14.7       ~ 202 2
36 Z 156-42 BiC 11 16 22.7088717648 +29 15 08.226762480   15.2 14.26     ~ 56 0
37 Z 185-28 LIN 11 17 00.1058032560 +32 35 50.962185528   15.5       ~ 34 1
38 Z 39-127 LIN 11 20 29.2376725104 +04 07 42.214822176   15.3       ~ 36 0
39 Z 185-51 LIN 11 22 56.4616199472 +34 06 41.214943260   14.6       ~ 49 0
40 NVSS J112625+520502 rG 11 26 25.1909341248 +52 05 03.586863444           ~ 16 0
41 NVSS J112727+400409 rG 11 27 27.5246374584 +40 04 09.526721808           ~ 21 0
42 IC 712 rG 11 34 49.2945748128 +49 04 39.576182052   14.8       ~ 92 1
43 MCG+09-19-133 rG 11 36 37.1481589056 +51 00 08.493808284   16       ~ 23 0
44 Z 12-62 rG 11 42 30.9485221800 -02 15 05.385434904   15.7       ~ 38 0
45 NGC 3826 LIN 11 42 32.8492786227 +26 29 19.943615642   14.4       ~ 56 1
46 Z 186-51 rG 11 48 04.6094422312 +37 26 38.193504216   15.4       ~ 39 1
47 MCG+09-20-030 SyG 11 55 31.3920328872 +54 52 00.440508756   17       ~ 28 0
48 NGC 3998 Sy2 11 57 56.1334044408 +55 27 12.922443432   11.64 12.10 10.09   ~ 682 2
49 NGC 4093 LIN 12 05 51.4765188962 +20 31 19.053573291   15.3       ~ 59 1
50 Z 215-24 LIN 12 06 07.8224162184 +40 09 02.675040660   15.2       ~ 29 0
51 NGC 4187 Bla 12 13 29.2778975688 +50 44 29.374130220   14.18       ~ 78 2
52 Z 158-75 rG 12 19 51.6593584824 +28 25 21.385090632   15.6       ~ 40 0
53 Z 293-19 rG 12 24 21.3212394648 +60 06 41.209110216   15.7       ~ 34 0
54 Z 244-25 QSO 12 30 11.8521285960 +47 00 22.654126404   15.6       ~ 49 1
55 Z 43-7 LIN 12 43 18.7371532872 +03 33 00.658820304   15.4       ~ 39 1
56 Z 71-37 LIN 12 46 33.7555694472 +11 53 47.921729352   15.7       ~ 46 1
57 2MASX J12502744+0013460 Sy1 12 50 27.4215516504 +00 13 45.587058564   17.80 17.11     ~ 36 1
58 NVSS J125409-011529 rG 12 54 09.1182523992 -01 15 27.089786520   16.22   14.99   ~ 27 0
59 Z 43-127 rG 13 04 05.0036290032 +07 54 28.324557360   15.2       ~ 30 0
60 NGC 5003 Bla 13 08 37.9083092533 +43 44 15.191545034   15.3       ~ 51 1
61 2MASX J13304250+3232493 Sy2 13 30 42.5184715728 +32 32 49.028947476           ~ 28 0
62 NGC 5222a LIN 13 34 55.9448054640 +13 44 31.798096800   14.1       ~ 60 1
63 Z 45-39 LIN 13 36 21.1888884504 +03 19 51.075725556   14.9       ~ 42 0
64 NGC 5249 LIN 13 37 37.4916385920 +15 58 19.942753584 15.67 15.09 13.97 13.33 12.59 ~ 44 1
65 LEDA 1877944 LIN 13 41 59.7261690312 +29 46 53.532135768   16.68       ~ 33 0
66 NGC 5318 LIN 13 50 36.0153559944 +33 42 17.469997164   13.5       ~ 77 1
67 IC 948 LIN 13 52 26.7094240176 +14 05 28.631972472   14.4       ~ 57 0
68 Z 162-62 LIN 14 05 28.3271701104 +30 46 01.972911252   15.5       ~ 29 1
69 IC 989 LIN 14 14 51.3448 +03 07 51.220   14.4       ~ 78 1
70 Z 18-95 LIN 14 15 17.9817481560 -02 26 41.060678964   15.5       ~ 39 0
71 IC 4435 rG 14 27 24.2382208920 +37 28 17.139377568   15.3       ~ 31 0
72 Z 104-41 rG 14 31 56.5990644120 +16 46 15.417769980   15.5       ~ 24 0
73 MCG+09-24-014 AGN 14 33 12.9665459088 +52 57 47.234103768   16       ~ 28 0
74 Z 47-102 LIN 14 34 24.7963334328 +02 47 56.316002892   15.7       ~ 29 0
75 Z 47-112 LIN 14 36 20.3885510904 +05 19 51.478979340   14.9       ~ 33 0
76 2MASX J14474546+1320320 LIN 14 47 45.5075329320 +13 20 32.422972848           ~ 22 0
77 Z 76-80 rG 14 52 16.4959001112 +12 17 11.500456020   15.2       ~ 25 0
78 Z 105-53 LIN 14 52 43.2586810440 +16 54 13.462211052   15.4       ~ 60 0
79 Z 134-57 rG 14 56 16.2015728712 +20 31 20.577952416   15.3       ~ 26 0
80 2MASX J15015229+1742283 LIN 15 01 52.2997841568 +17 42 28.239228576           ~ 24 0
81 2MASX J15042567+0749292 LIN 15 04 25.6862165064 +07 49 29.718353100           ~ 19 0
82 Z 76-148 SyG 15 06 01.8905865648 +08 47 23.175696192   15.4       ~ 26 0
83 Z 76-154 Sy2 15 06 36.625 +09 26 18.29   15.3       ~ 44 0
84 NVSS J150808+265459 rG 15 08 08.2534766880 +26 54 57.535563672           ~ 23 0
85 Z 135-47 LIN 15 20 10.9475153904 +25 43 19.370431560   15.2       ~ 31 0
86 NGC 5920 LIN 15 21 51.870 +07 42 31.97   15.5       ~ 137 1
87 Z 166-5 LIN 15 30 16.1521707888 +27 05 50.999021484   15.3       ~ 43 1
88 Z 250-2 LIN 15 41 47.2807321680 +45 33 21.655316016   15.5       ~ 43 0
89 Z 250-6 LIN 15 44 26.9300218512 +47 00 24.288599772   15.3       ~ 33 0
90 Z 222-50 Sy2 15 44 51.2349901440 +43 30 50.581175976   15.0       ~ 43 1
91 IC 4587 LIN 15 59 51.6141497592 +25 56 26.318529096   15.5       ~ 72 1
92 7C 155817.80+445059.00 Sy2 15 59 53.9803502520 +44 42 32.382607500           ~ 41 1
93 NGC 6040A LIN 16 04 26.5089149693 +17 44 31.125762066   14.6       ~ 62 1
94 Z 108-115 rG 16 05 23.8476360336 +14 38 51.669020292   15.2       ~ 31 0
95 2MASX J16064185+0844368 LIN 16 06 41.8348013616 +08 44 36.719654280           ~ 22 0
96 Z 167-46 LIN 16 12 38.8455656040 +29 38 36.905816112   15.5       ~ 61 0
97 NGC 6081 LIN 16 12 56.8487186784 +09 52 01.414323552   14.4       ~ 73 0
98 Z 138-1 LIN 16 21 46.0685604504 +25 49 14.446037568   15.7       ~ 32 0
99 LEDA 58287 Sy2 16 28 46.1293897776 +25 29 40.970565960           ~ 47 0
100 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 180 0
101 Z 197-16 LIN 16 49 25.8743170440 +36 03 21.096114012   15.7       ~ 28 0
102 Z 139-26 Sy2 16 58 30.0533392608 +25 23 24.962600508   15.7       ~ 33 0
103 Z 139-31 LIN 17 03 58.5016597848 +24 10 39.533911032   15.1       ~ 36 0
104 NGC 6338 Bla 17 15 22.9842192344 +57 24 40.346559927   14.2   8   ~ 205 2
105 Z 170-18 rG 17 22 15.4150241280 +30 42 39.858918984   15.6       ~ 26 0

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