2019A&A...622A..23N

Query : 2019A&A...622A..23N

2019A&A...622A..23N - Astronomy and Astrophysics, volume 622A23-23 (2019/2-1)

Exploring the properties of low-frequency radio emission and magnetic fields in a sample of compact galaxy groups using the LOFAR Two-Metre Sky Survey (LoTSS).

NIKIEL-WROCZYNSKI B., BERGER A., HERRERA RUIZ N., BOMANS D.J., BLEX S., HORELLOU C., PALADINO R., BECKER A., MISKOLCZI A., BECK R., CHYZY K., DETTMAR R.-J., HEALD G., HEESEN V., JAMROZY M., SHIMWELL T.W. and TASSE C.

Abstract (from CDS):

We use the LOFAR Two-metre Sky Survey (LoTSS) Data Release I to identify the groups of galaxies (and individual galaxies) from the Hickson compact groups (HCG) and magnitude-limited compact groups (MLCG) samples that emit at the frequency of 150MHz, characterise their radio emission (extended or limited to the galaxies), and compare new results to earlier observations and theoretical predictions. The detection of 73 systems (and 7 more - probably) out of 120, of which as many as 17 show the presence of extended radio structures, confirms the previous hypothesis of the common character of the magnetic field inside galaxy groups and its detectability. In order to investigate the future potential of low-frequency radio studies of galaxy groups, we also present a more detailed insight into four radio-emitting systems, for which the strength of the magnetic field inside their intergalactic medium (IGM) is calculated. The estimated values are comparable to that found inside star-forming galaxies, suggesting a dynamical and evolutionary importance of the magnetic field in galaxy groups.

Abstract Copyright: © ESO 2019

Journal keyword(s): radio continuum: galaxies - galaxies: groups: general - galaxies: magnetic fields - magnetic fields

VizieR on-line data: <Available at CDS (J/A+A/622/A23): tablea1.dat tablea2.dat>

Simbad objects: 92

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Number of rows : 92
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 HCG 4 CGG 00 34 15.3 -21 26 52           ~ 59 0
2 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
3 HCG 15 CGG 02 07 39.0 +02 08 18           ~ 75 0
4 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
5 SDSSCGA 68 CGG 10 32 54.1 +12 05 12           ~ 5 0
6 MLCG 1131 CGG 10 49 54.199 +51 52 06.45           ~ 2 0
7 MLCG 1568 CGG 10 51 47.274 +51 01 04.50           ~ 3 0
8 MLCG 1117 CGG 10 53 35.240 +54 52 05.13           ~ 3 0
9 MLCG 1116 CGG 10 54 10.620 +54 49 36.16           ~ 3 0
10 MLCG 1264 CGG 10 56 13.048 +46 52 49.23           ~ 4 0
11 MLCG 1149 CGG 10 59 58.656 +50 02 03.86           ~ 2 0
12 MLCG 1310 CGG 11 06 30.289 +48 38 05.92           ~ 3 0
13 MLCG 1138 CGG 11 07 59.249 +55 52 55.59           ~ 3 0
14 MLCG 1332 CGG 11 14 58.235 +54 28 49.74           ~ 4 0
15 HCG 50 CGG 11 17 06.870 +54 55 11.28           ~ 30 0
16 SDSSCGA 639 CGG 11 19 27.3 +54 21 44           ~ 6 0
17 MLCG 1326 CGG 11 20 02.970 +47 14 19.97           ~ 2 0
18 MLCG 1121 CGG 11 23 04.779 +56 01 06.22           ~ 4 0
19 MLCG 1362 CGG 11 23 50.706 +47 11 44.80           ~ 3 0
20 MLCG 1108 CGG 11 26 27.008 +55 34 32.50           ~ 3 0
21 MLCG 1334 CGG 11 26 30.168 +54 47 14.29           ~ 4 0
22 SDSSCGB 751 CGG 11 29 10.1 +54 06 51           ~ 5 0
23 MLCG 1186 CGG 11 29 53.859 +50 08 15.91           ~ 3 0
24 MLCG 1202 CGG 11 32 19.219 +55 57 57.25           ~ 4 0
25 HCG 56 CGG 11 32 32 +52 56.9           ~ 42 1
26 MLCG 1567 CGG 11 34 50.288 +49 04 58.11           ~ 3 0
27 MLCG 1335 CGG 11 35 37.174 +54 56 06.91           ~ 2 0
28 MLCG 1296 CGG 11 35 47.637 +49 09 31.36           ~ 3 0
29 MLCG 1361 CGG 11 37 58.272 +47 28 24.64           ~ 3 0
30 SDSSCGA 317 CGG 11 39 11.6 +55 40 22           ~ 5 0
31 MLCG 1564 CGG 11 47 24.825 +55 44 00.45           ~ 4 0
32 MLCG 1565 CGG 11 47 41.005 +55 43 18.49           ~ 3 0
33 MLCG 1227 CGG 11 48 07.343 +54 38 46.08           ~ 3 0
34 MLCG 1191 CGG 11 50 33.739 +50 33 01.59           ~ 2 0
35 MLCG 1225 CGG 11 51 15.480 +56 23 36.54           ~ 3 0
36 MLCG 1167 CGG 11 51 31.923 +54 13 32.88           ~ 4 0
37 MLCG 1299 CGG 11 51 42.792 +54 57 34.11           ~ 4 0
38 MLCG 1204 CGG 11 52 06.083 +53 18 50.48           ~ 4 0
39 MLCG 1208 CGG 11 54 16.432 +52 41 35.27           ~ 3 0
40 SDSSCGB 13170 CGG 11 54 48.5 +52 49 22           ~ 5 0
41 MLCG 1380 CGG 11 55 51.969 +48 15 41.10           ~ 2 0
42 MLCG 1309 CGG 11 56 49.691 +55 02 11.96           ~ 5 0
43 MLCG 0650 CGG 12 02 20.303 +23 53 21.26           ~ 2 0
44 HCG 60 CGG 12 03 07.877 +51 40 46.51           ~ 25 0
45 ACO 1452 ClG 12 03 32.23 +51 43 34.9           ~ 77 0
46 MLCG 1371 CGG 12 04 52.621 +54 13 22.23           ~ 2 0
47 MLCG 1270 CGG 12 07 53.163 +51 36 34.56           ~ 2 0
48 MLCG 1276 CGG 12 18 40.338 +48 51 57.92           ~ 4 0
49 MLCG 1349 CGG 12 20 41.041 +47 39 28.05           ~ 2 0
50 SDSSCGA 1285 CGG 12 21 43.1 +55 48 41           ~ 4 0
51 MLCG 0100 CGG 12 26 44.901 +11 14 05.92           ~ 3 0
52 MLCG 1283 CGG 12 27 47.003 +50 24 10.29           ~ 3 0
53 MLCG 1218 CGG 12 30 56.063 +51 20 45.64           ~ 3 0
54 MLCG 0010 CGG 12 35 19.622 +47 42 55.39           ~ 3 0
55 MLCG 0039 CGG 12 35 20.050 +47 18 05.28           ~ 3 0
56 NGC 4631 GiC 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 1154 3
57 MLCG 1246 CGG 12 54 01.901 +48 47 14.88           ~ 3 0
58 MLCG 1192 CGG 13 08 06.017 +50 04 32.91           ~ 4 0
59 MLCG 0051 CGG 13 11 22.306 +47 32 22.56           ~ 3 0
60 SDSSCGB 8465 CGG 13 15 44.0 +55 47 41           ~ 5 0
61 MLCG 1193 CGG 13 16 32.315 +49 54 54.47           ~ 3 0
62 MLCG 0041 CGG 13 19 52.822 +52 03 39.22           ~ 4 0
63 MLCG 1563 CGG 13 35 46.373 +47 25 26.00           ~ 3 0
64 MLCG 1375 CGG 13 38 16.930 +56 24 22.38           ~ 3 0
65 MLCG 1365 CGG 13 43 15.923 +55 36 35.40           ~ 3 0
66 MLCG 1364 CGG 13 43 43.436 +55 38 06.95           ~ 3 0
67 MLCG 1370 CGG 13 43 43.473 +55 23 16.80           ~ 4 0
68 SDSSCGA 1458 CGG 13 50 56.1 +56 01 58           ~ 6 0
69 MLCG 0024 CGG 13 51 42.264 +55 59 55.15           ~ 4 0
70 MLCG 1216 CGG 13 52 43.535 +48 48 08.57           ~ 4 0
71 MLCG 0177 CGG 13 58 31.992 +49 32 19.40           ~ 2 0
72 MLCG 0028 CGG 14 07 24.122 +54 00 18.96           ~ 4 0
73 SDSSCGA 1070 CGG 14 13 25.9 +54 44 18           ~ 5 0
74 MLCG 1258 CGG 14 19 25.258 +45 52 08.84           ~ 3 0
75 NGC 5575 LIN 14 20 59.4059961240 +06 12 09.580246416   14.5       ~ 33 0
76 SDSSCGA 962 CGG 14 25 19.7 +47 14 57           ~ 5 0
77 SDSSCGA 735 CGG 14 28 22.4 +45 58 07           ~ 5 0
78 MLCG 1379 CGG 14 33 10.353 +52 58 20.97           ~ 3 0
79 MLCG 1323 CGG 14 38 43.912 +56 00 00.45           ~ 2 0
80 MLCG 1495 CGG 14 38 55.096 +46 40 35.60           ~ 5 0
81 MLCG 1324 CGG 14 41 16.806 +55 50 35.70           ~ 2 0
82 ACO 1958 ClG 14 43 13 +30 58.3           ~ 53 0
83 SDSSCGA 252 CGG 14 44 53.6 +51 20 32           ~ 5 0
84 MLCG 1278 CGG 14 44 53.804 +48 38 41.36           ~ 3 0
85 SDSSCGB 70096 CGG 14 50 15.2 +50 46 29           ~ 4 0
86 MLCG 0118 CGG 14 54 09.463 +46 59 23.62           ~ 4 0
87 SDSSCGB 1981 CGG 14 55 02.9 +54 19 25           ~ 4 0
88 MLCG 1267 CGG 14 59 45.011 +47 56 04.06           ~ 3 0
89 MLCG 1350 CGG 15 01 14.711 +47 16 30.36           ~ 2 0
90 SDSSCGA 235 CGG 15 07 41.0 +52 49 59           ~ 3 0
91 SDSSCGA 1874 CGG 15 19 25.7 +49 29 45           ~ 4 0
92 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 480 1

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