2013ApJ...764..152S

Query : 2013ApJ...764..152S

2013ApJ...764..152S - Astrophys. J., 764, 152 (2013/February-3)

The contribution of radio galaxy contamination to measurements of the Sunyaev-Zel'dovich decrement in massive galaxy clusters at 140 GHz with bolocam.

SAYERS J., MROCZKOWSKI T., CZAKON N.G., GOLWALA S.R., MANTZ A., AMEGLIO S., DOWNES T.P., KOCH P.M., LIN K.-Y., MOLNAR S.M., MOUSTAKAS L., MUCHOVEJ S.J.C., PIERPAOLI E., SHITANISHI J.A., SIEGEL S. and UMETSU K.

Abstract (from CDS):

We describe in detail our characterization of the compact radio source population in 140 GHz Bolocam observations of a set of 45 massive galaxy clusters. We use a combination of 1.4 and 30 GHz data to select a total of 28 probable cluster-member radio galaxies and also to predict their 140 GHz flux densities. All of these galaxies are steep-spectrum radio sources and they are found preferentially in the cool-core clusters within our sample. In particular, 11 of the 12 brightest cluster-member radio sources are associated with cool-core systems. Although none of the individual galaxies are robustly detected in the Bolocam data, the ensemble-average flux density at 140 GHz is consistent with, but slightly lower than, the extrapolation from lower frequencies assuming a constant spectral index. In addition, our data indicate an intrinsic scatter of ≃ 30% around the power-law extrapolated flux densities at 140 GHz, although our data do not tightly constrain this scatter. For our cluster sample, which is composed of high-mass and moderate-redshift systems, we find that the maximum fractional change in the Sunyaev-Zel'dovich signal integrated over any single cluster due to the presence of these radio sources is ≃ 20%, and only ≃ 1/4 of the clusters show a fractional change of more than 1%. The amount of contamination is strongly dependent on cluster morphology, and nearly all of the clusters with ≥ 1% contamination are cool-core systems. This result indicates that radio contamination is not significant compared with current noise levels in 140 GHz images of massive clusters and is in good agreement with the level of radio contamination found in previous results based on lower frequency data or simulations.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: clusters: general - radio continuum: galaxies

Simbad objects: 77

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Number of rows : 77
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 ClG 0016+16 ClG 00 18 33.3 +16 26 36           ~ 517 0
2 MCS J0025.4-1222 ClG 00 25 29.381 -12 22 37.06           ~ 151 0
3 NVSS J002532-122309 Rad 00 25 32.00 -12 23 09.1           ~ 1 0
4 NVSS J002635+170931 Rad 00 26 35.50 +17 09 31.7           ~ 1 0
5 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
6 NVSS J013152-133659 Rad 01 31 52.5 -13 37 00           ~ 3 0
7 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 326 0
8 ClG J0152-1358 ClG 01 52 41.3 -13 58 13           ~ 262 3
9 ACO 267 ClG 01 52 43.016 +00 59 58.90           ~ 241 0
10 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 825 0
11 NVSS J023955-013418 Rad 02 39 55.30 -01 34 18.3           ~ 1 0
12 ACO 383 ClG 02 48 03.3915 -03 31 45.228           ~ 389 0
13 6dFGS gJ024803.4-033145 rG 02 48 03.3956603208 -03 31 45.600488256   17.89   15.76   ~ 26 1
14 ACT-CL J0257.1-2325 ClG 02 57 09.151 -23 26 05.83           ~ 80 0
15 RX J0329.6-0211 ClG 03 29 41.6 -02 11 47           ~ 155 0
16 NVSS J032941-021152 Rad 03 29 41.70 -02 11 52.2           ~ 2 0
17 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 425 0
18 ACT-CL J0417.5-1154 ClG 04 17 34.6 -11 54 32           ~ 116 0
19 NVSS J041734-115434 Rad 04 17 34.91 -11 54 34.2           ~ 2 1
20 ClG J0429-0253 ClG 04 29 36.0 -02 53 09           ~ 131 0
21 NVSS J042936-025306 Rad 04 29 36.00 -02 53 06.4           ~ 2 0
22 ClG J0451+0006 ClG 04 51 54.6 +00 06 19           ~ 57 0
23 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 368 0
24 ClG J0647+7015 ClG 06 47 50.0 +70 14 55           ~ 177 0
25 NVSS J071734+374501 Rad 07 17 34.1 +37 45 01           ~ 2 0
26 NVSS J071735+374539 Rad 07 17 35.70 +37 45 39.2           ~ 1 0
27 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 511 0
28 B3 0714+378 Rad 07 17 36.6 +37 45 01           ~ 170 2
29 ClG J0744+3927 ClG 07 44 52.5 +39 27 30           ~ 189 0
30 ACO 611 ClG 08 00 58.7 +36 02 49           ~ 275 0
31 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
32 ACT-CL J0911.1+1746 ClG 09 11 11.277 +17 46 31.94           ~ 79 0
33 ACO 963 ClG 10 17 03.4 +39 02 56           ~ 414 0
34 NVSS J105659-033726 Rad 10 56 59.60 -03 37 26.8           ~ 2 0
35 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
36 NVSS J111551+012955 rG 11 15 51.902 +01 29 55.07     20.05944     ~ 15 0
37 MCS J1115.8+0129 ClG 11 15 52.1 +01 29 53           ~ 142 0
38 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 546 0
39 NVSS J115716+333644 rG 11 57 16.8974540904 +33 36 26.757959904           ~ 11 1
40 ACO 1423 ClG 11 57 17.3206 +33 36 39.364           ~ 181 0
41 NVSS J120612-084802 Rad 12 06 12.074 -08 48 03.14           ~ 4 1
42 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 286 0
43 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 228 0
44 NVSS J122658+333244 Rad 12 26 58.30 +33 32 44.3           ~ 2 0
45 ClG J1311-0311 ClG 13 11 01.7 -03 10 38           ~ 120 0
46 NVSS J134730-114530 Rad 13 47 30.10 -11 45 30.2           ~ 1 0
47 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 577 0
48 NVSS J134730-114508 Rad 13 47 30.67 -11 45 08.6           ~ 7 2
49 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 727 1
50 NAME SMM J14010+0252 Sy1 14 01 02.0819944848 +02 52 42.426538140   19.3       ~ 47 2
51 ClG J1423+2404 ClG 14 23 47.7 +24 04 40           ~ 231 0
52 NVSS J142347+240439 rG 14 23 47.876 +24 04 42.45           ~ 12 0
53 LEDA 1900245 Bla 15 32 53.780 +30 20 59.41   19.1   15.7 17.819 ~ 155 1
54 ClG J1532+3021 ClG 15 32 53.8 +30 21 00           ~ 122 0
55 NVSS J163246+053434 Rad 16 32 46.9 +05 34 33   16.6       ~ 12 1
56 ACO 2204 ClG 16 32 47.7 +05 34 18           ~ 457 0
57 NVSS J164015+464228 rG 16 40 15.930 +46 42 31.72   20.65       ~ 6 0
58 NVSS J164021+464247 rG 16 40 22.0239801888 +46 42 46.015604604   19.8       ~ 17 1
59 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
60 NVSS J164023+464147 Rad 16 40 23.80 +46 41 47.3           ~ 1 0
61 NVSS J172015+353526 rG 17 20 15.55006 +35 35 32.4589           ~ 1 0
62 NVSS J172016+353628 Rad 17 20 16.769 +35 36 25.87           ~ 4 1
63 ClG J1720+3536 ClG 17 20 16.8 +35 36 27           ~ 150 1
64 ACO 2261 ClG 17 22 26.9 +32 07 58           ~ 370 0
65 NVSS J172227+320757 rG 17 22 27.185 +32 07 57.25           ~ 47 1
66 ClG J1931-2635 ClG 19 31 49.6 -26 34 33           ~ 181 0
67 PMN J1931-2635 rG 19 31 50.19 -26 35 25.8           ~ 5 1
68 ClG 2053-04 ClG 20 56 21.2 -04 37 46   21.0       ~ 168 0
69 ClG J2129-0741 ClG 21 29 26.0 -07 41 28           ~ 189 0
70 NVSS J212940+000522 rG 21 29 39.953 +00 05 21.16           ~ 36 0
71 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 308 0
72 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 390 0
73 [TVS2020] MS2137 50597 BLL 21 40 15.176 -23 39 39.88       16.7   ~ 19 1
74 ACT-CL J2211.7-0349 ClG 22 11 44.8 -03 49 33           ~ 96 0
75 NVSS J221456-140055 Rad 22 14 56.5 -14 00 56           ~ 1 0
76 ACT-CL J2214.9-1359 ClG 22 14 57.3 -14 00 12           ~ 100 0
77 ACO S 1063 ClG 22 48 45.4 -44 31 42           ~ 395 0

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