2011A&A...533A..35V


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.30CEST19:01:01

2011A&A...533A..35V - Astronomy and Astrophysics, volume 533A, 35-35 (2011/9-1)

Radio continuum observations of new radio halos and relics from the NVSS and WENSS surveys. Relic orientations, cluster X-ray luminosity, and redshift distributions.

VAN WEEREN R.J., BRUEGGEN M., ROETTGERING H.J.A., HOEFT M., NUZA S.E. and INTEMA H.T.

Abstract (from CDS):

Radio halos and relics are diffuse radio sources found in galaxy clusters showing significant substructure at X-ray wavelengths. These sources provide important information about non-thermal processes taking place in the intracluster medium (ICM). Until now only a few dozen relics and halos are known, while models predict that a much larger number of these sources exist. In this paper we present the results of an extensive observing campaign to search for new diffuse radio sources in galaxy clusters. The aim of the observations is to create a large sample of diffuse radio sources in galaxy clusters that help to understand the formation of radio relics and halos and can be used to probe the physical conditions of the ICM. We carried out radio continuum observations with the Westerbork Synthese Radio Telescope (WSRT), Giant Metrewave Radio Telescope (GMRT) and Very Large Array (VLA) of clusters with diffuse radio emission visible in NVSS and WENSS survey images. Optical images were taken with the William Herschel and Isaac Newton Telescope (WHT, INT). We discovered 6 new radio relics, including a probable double relic system, and 2 radio halos. In addition, we confirm the presence of diffuse radio emission in four galaxy clusters. By constructing a sample of 35 radio relics we find that relics are mostly found along the major axis of the X-ray emission from the ICM, while their orientation is perpendicular to this axis. We also compared the X-ray luminosity and redshift distributions of clusters with relics to an X-ray selected sample from the NORAS and REFLEX surveys. We find tentative evidence for an increase of the cluster's relic fraction with X-ray luminosity and redshift. The major and minor axis ratio distribution of the ICM for clusters with relics is broader than that of the NORAS-REFLEX sample. The location and orientation of radio relics with respect to the ICM elongation is consistent with the scenario that relics trace merger shock waves.

Abstract Copyright:

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: intracluster medium - radio continuum: galaxies - structure of Universe large-scale

CDS comments: Table 4 CIZA J2252.8+5301 is a misprint for CIZA J2242.8+5301.

Simbad objects: 44

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Number of rows : 44

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 ZwCl 0008+5215 ClG 00 08 25.6 +52 31 41           ~ 33 0
2 ACO 13 ClG 00 13 38.5 -19 30 19           ~ 93 1
3 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 580 0
4 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 792 0
5 ACO 115 ClG 00 55 59.5 +26 19 14           ~ 235 1
6 ACO 133 ClG 01 02 39.0 -21 57 15           ~ 339 1
7 ZwCl 0104+5350 ClG 01 07 47.8 +54 08 31           ~ 23 0
8 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 213 0
9 ACO 523 ClG 04 59 01 +08 46.5           ~ 42 0
10 ACO 548 ClG 05 47 01.7 -25 36 59           B8 196 2
11 ACO 3365 ClG 05 48 12 -21 56.1           ~ 32 0
12 RXC J0548.8-2154 ClG 05 48 50.4 -21 54 43           ~ 9 0
13 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 272 0
14 1RXS J064923.7+180111 ClG 06 49 22.8 +18 01 00           ~ 11 0
15 NVSS J064928+175700 Rad 06 49 28.40 +17 56 59.0           ~ 2 1
16 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 809 1
17 B3 0714+378 Rad 07 17 36.50 +37 45 23.0           ~ 169 2
18 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 366 0
19 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 219 0
20 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 632 1
21 * f UMa PM* 09 08 52.2576325 +51 36 16.732968 4.87 4.75 4.48 4.21 4.10 kA3VmF5IIISr 141 0
22 ACO 746 ClG 09 09 34.7638 +51 32 56.134           ~ 32 0
23 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 130 0
24 MCXC J1053.7+5452 ClG 10 53 44.4 +54 52 21           ~ 40 0
25 ACO 1240 ClG 11 23 32 +43 06.5           ~ 73 0
26 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 132 0
27 ACO 1612 ClG 12 47 43.2 -02 47 32           ~ 29 0
28 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4246 2
29 ACO 1664 ClG 13 03 42.4 -24 14 44           ~ 114 0
30 2MASX J13142209-2515456 ClG 13 14 31.5049 -25 15 56.602           ~ 87 0
31 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 212 2
32 NVSS J150940+333119 Rad 15 09 40.2 +33 31 20           ~ 2 1
33 ACO 2034 ClG 15 10 10.80 +33 30 21.6           ~ 177 1
34 ACO 2061 ClG 15 21 20.58 +30 40 15.3           ~ 163 1
35 ACO 2067 ClG 15 23 14 +30 54.4           ~ 101 1
36 NAME Corona Borealis SCG 15 25 +29.5           ~ 116 0
37 ACO 2163 ClG 16 15 34.1 -06 07 26           ~ 521 0
38 ACO 2256 ClG 17 03 43.5 +78 43 03           ~ 832 1
39 ACO 2255 ClG 17 12 50.04 +64 03 10.6           ~ 504 0
40 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 568 1
41 ACO 2345 ClG 21 27 09.80 -12 09 58.8           ~ 112 1
42 NAME Sausage Cluster ClG 22 42 53.0 +53 01 05           ~ 156 0
43 ZwCl 2341+0000 ClG 23 43 40.566 +00 18 18.94           ~ 55 0
44 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 314 3

    Equat.    Gal    SGal    Ecl

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2020.09.30-19:01:01

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