2004MNRAS.354..485B


Query : 2004MNRAS.354..485B

2004MNRAS.354..485B - Mon. Not. R. Astron. Soc., 354, 485-521 (2004/October-3)

The radio source population at high frequency: follow-up of the 15-GHz 9C survey.

BOLTON R.C., COTTER G., POOLEY G.G., RILEY J.M., WALDRAM E.M., CHANDLER C.J., MASON B.S., PEARSON T.J. and READHEAD A.C.S.

Abstract (from CDS):

We have carried out extensive radio and optical follow-up of 176 sources from the 15-GHz 9th Cambridge survey. Optical identifications have been found for 155 of the radio sources; optical images are given with radio maps overlaid. The continuum radio spectrum of each source spanning the frequency range 1.4-43 GHz is also given.

Two flux-limited samples are defined, one containing 124 sources complete to 25 mJy and one of 70 sources complete to 60 mJy. Between one-fifth and one-quarter of sources from these flux-limited samples display convex radio spectra, rising between 1.4 and 4.8 GHz. These rising-spectrum sources make up a much larger fraction of the radio source population at this high selection frequency than in lower frequency surveys.

We find that by using non-simultaneous survey flux density measurements at 1.4 and 15 GHz to remove steep-spectrum objects, the efficiency of selecting objects with spectra rising between 1.4 and 4.8 GHz (as seen in simultaneous measurements) can be raised to 49 per cent without compromising the completeness of the rising-spectrum sample.


Abstract Copyright: 2004 RAS

Journal keyword(s): surveys - galaxies: active - radio continuum: general

VizieR on-line data: <Available at CDS (J/MNRAS/354/485): table2.dat>

Nomenclature: Table 2: [BCP2004] 9C JHHMM+DDMM N=51.

Simbad objects: 176

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Number of rows : 176
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 [BCP2004] 9C J0002+3456 G 00 02 18.9 +34 55 58       18.96   ~ 1 0
2 NVSS J000252+294253 Rad 00 02 52.4328539913 +29 42 53.231141604       19.23   ~ 3 1
3 9C J0003+2740 QSO 00 03 13.0876490921 +27 40 44.970989652       17.90   ~ 7 1
4 NVSS J000355+301003 Rad 00 03 55.7 +30 10 03       20.46   ~ 4 1
5 4C 31.01 G 00 05 55.70 +31 39 48.0       19.03   ~ 10 1
6 ICRF J000648.7+242236 QSO 00 06 48.7894056 +24 22 36.392279   18.4   18.80   ~ 26 1
7 NVSS J001003+340315 Rad 00 10 03.7009773155 +34 03 14.202950630       19.31   ~ 4 1
8 NVSS J001011+283812 Rad 00 10 11.1 +28 38 12       19.86   ~ 2 1
9 9C J0010+2854 QSO 00 10 27.787 +28 54 58.72       19.56   ~ 7 1
10 NVSS J001028+271755 Rad 00 10 28.7 +27 17 54       20.02   ~ 2 1
11 9C J0010+2619 Rad 00 10 36.3 +26 19 19           ~ 3 0
12 NVSS J001042+295612 Rad 00 10 42.40 +29 56 12.9       19.47   ~ 3 1
13 9C J0010+2650 QSO 00 10 51.2258272270 +26 50 25.916912524       17.65   ~ 3 1
14 [BCP2004] 9C J0011+3529 Rad 00 11 30.9 +35 29 07       19.10   ~ 1 0
15 4C 27.01 Rad 00 11 33.8 +28 03 56   11.73 10.84 19.06   B0III 13 1
16 9C J0011+2928 QSO 00 11 45.9814508632 +29 28 30.604123892       18.42   ~ 5 1
17 PKS J0012+2702 Rad 00 12 38.10 +27 02 41.0       15.91   ~ 4 1
18 9C J0012+3353 QSO 00 12 47.3821833 +33 53 38.471722       20.15   ~ 25 1
19 9C J0012+3053 Rad 00 12 50.4 +30 53 23       19.82   ~ 3 0
20 NVSS J001332+283451 Rad 00 13 32.6580392444 +28 34 51.098995816       21.01   ~ 2 1
21 NVSS J001346+264636 Rad 00 13 46.63 +26 46 35.6       20.70   ~ 2 1
22 9C J0014+2815 G 00 14 33.8 +28 15 07       19.50   ~ 3 1
23 3C 6 Rad 00 15 06.1474103 +32 16 13.309618   18.0 16.8 15.61   ~ 29 1
24 9C J0015+3052 QSO 00 15 36.0216619746 +30 52 29.782675772     16.30 16.33   ~ 16 1
25 NVSS J001812+292127 Rad 00 18 12.70 +29 21 25.9       17.45   ~ 4 1
26 [BCP2004] 9C J0018+3105 Rad 00 18 31.8 +31 06 14           ~ 1 0
27 87GB 001614.8+285033 BLL 00 18 50.9145913393 +29 07 39.376840613       18.50   ~ 6 1
28 NVSS J001908+281753 Rad 00 19 08.9 +28 17 56       17.41   ~ 4 0
29 NGC 76 GiG 00 19 37.7903341 +29 56 01.921845   14.0   7.25   ~ 42 1
30 NVSS J001952+264732 Rad 00 19 52.5317489944 +26 47 31.967524170       19.27   ~ 2 1
31 9C J0019+3320 QSO 00 19 58.6729837012 +33 20 02.683813992       19.16   ~ 9 1
32 NVSS J002050+315229 Rad 00 20 50.6 +31 52 29           ~ 4 1
33 NVSS J002128+271147 Rad 00 21 28.56 +27 11 46.4           ~ 3 1
34 NVSS J002130+322659 Rad 00 21 30.0 +32 26 59       20.70   ~ 3 1
35 NVSS J002243+325045 Rad 00 22 43.8 +32 50 46           ~ 2 1
36 NVSS J002309+311402 Rad 00 23 09.92 +31 14 01.5           ~ 2 1
37 NVSS J002314+273431 Rad 00 23 14.59 +27 34 30.5       20.40   ~ 3 1
38 NVSS J002323+253918 Rad 00 23 23.0 +25 39 18       19.00   ~ 4 1
39 [CTW2005] J0024+2911 Rad 00 24 34.4 +29 11 27       17.44   ~ 7 0
40 NVSS J002700+283027 Rad 00 27 00.6 +28 30 27       20.50   ~ 2 1
41 9C J0028+3103 QSO 00 28 10.7266133622 +31 03 48.086056573   15.47 15.22 14.56   ~ 22 1
42 NVSS J002817+291428 Rad 00 28 17.09 +29 14 27.6       19.60   ~ 2 1
43 9C J0028+2954 QSO 00 28 31.9133314181 +29 54 58.271961513       19.50   ~ 6 1
44 2MASS J00283428+2408079 BLL 00 28 34.2127376839 +24 08 08.062231950       17.99   ~ 13 0
45 NVSS J002933+324451 Rad 00 29 33.0 +32 44 51       22.60   ~ 2 1
46 9C J0030+2957 Rad 00 30 05.3 +29 57 07       14.26   ~ 1 0
47 NVSS J003021+341601 Rad 00 30 21.4635691645 +34 16 00.381936958       20.40   ~ 2 1
48 4C 28.01 Rad 00 30 28.8 +28 33 37       20.10   ~ 4 1
49 NVSS J003057+280941 Rad 00 30 57.12 +28 09 41.2       19.50   ~ 3 1
50 9C J0031+3016 Sy1 00 31 21.9955772555 +30 16 02.213809690     18.2 15.95   ~ 12 1
51 NVSS J003244+275856 Rad 00 32 44.5262136497 +27 58 55.553851110       20.22   ~ 3 1
52 NVSS J003309+275226 Rad 00 33 09.71 +27 52 26.3           ~ 3 1
53 9C J0034+2754 QSO 00 34 43.4860054041 +27 54 25.711813617   18.0   17.87   ~ 27 1
54 4C 26.01 G 00 36 05.20 +26 20 35.0     19.8 19.30   ~ 9 1
55 4C 34.31 Rad 09 17 16.6 +34 46 42       20.20   ~ 14 1
56 9C J0919+3324 BLL 09 19 08.78711973 +33 24 41.9429830   21.72 21.04 19.00   ~ 32 1
57 7C 0920+3120 QSO 09 23 47.9483539575 +31 07 54.153556881   18.70 18.51 17.90   ~ 47 1
58 7C 0920+2828 QSO 09 23 51.5234069 +28 15 25.022018   19.70 19.48 19.00   ~ 73 1
59 4C 32.28 Rad 09 25 32.7 +31 59 53       21.50   ~ 11 1
60 6C 092242+314056 BLL 09 25 43.6502718 +31 27 10.802918   19.14 18.72 18.10   ~ 29 1
61 9C J0926+2758 G 09 26 45.17920 +27 58 21.1095           ~ 6 1
62 9C J0927+2954 QSO 09 27 22.5 +29 54 13     21.0 21.40   ~ 10 1
63 9C J0927+3034 QSO 09 27 39.8057338860 +30 34 16.751605322   19.2 19.00 19.55   ~ 21 1
64 9C J0928+2904 AG? 09 28 15.0951 +29 04 17.490           ~ 4 1
65 7C 0927+3516 BLL 09 30 55.2790949 +35 03 37.608196   20.98 20.35 18.40   ~ 65 1
66 9C J0931+2750 QSO 09 31 51.7797952825 +27 50 50.648949189       20.10   ~ 13 1
67 NVSS J093214+283729 Rad 09 32 14.23129 +28 37 30.2054       18.23   ~ 3 1
68 6C 092953+335301 BLL 09 32 55.0600148876 +33 39 29.627338773       15.86   ~ 6 1
69 9C J0933+2845 QSO 09 33 37.2816369450 +28 45 32.316257697   19.63 17.94 17.50   ~ 65 0
70 NVSS J093339+325445 Rad 09 33 39.7 +32 54 45           ~ 4 1
71 NVSS J093420+275603 Rad 09 34 20.40 +27 56 03.0       20.10   ~ 1 0
72 NVSS J093447+305056 Rad 09 34 47.3 +30 50 56   20.0   19.70   ~ 10 1
73 9C J0935+2917 Rad 09 35 36.2 +29 17 11       21.00   ~ 2 0
74 9C J0936+3207 QSO 09 36 03.8850959988 +32 07 09.346528180   17.84 17.44 17.29   ~ 32 1
75 9C J0936+3313 LIN 09 36 09.3741202289 +33 13 08.449032065       13.85   ~ 20 1
76 7C 0933+2637 QSO 09 36 14.2432285127 +26 24 08.105174133   18.56 18.36 17.30   ~ 14 1
77 NVSS J093706+320654 Rad 09 37 06.3821954495 +32 06 55.556866179       19.50   ~ 3 1
78 7C 093415.90+342502.00 G 09 37 16.6 +34 11 34       21.20   ~ 3 1
79 9C J0939+2908 QSO 09 39 01.6 +29 08 28       20.50   ~ 4 1
80 9C J0940+2626 Sy2 09 40 13.4735314602 +26 26 56.589476614   21.98 21.30 19.60   ~ 14 1
81 9C J0940+2603 BLL 09 40 14.72274 +26 03 29.9466   20.32 19.62 19.21   ~ 43 1
82 6C 093723+302901 QSO 09 40 18.8462893812 +30 15 09.927728468   18.83 18.63 17.95   ~ 24 1
83 9C J0941+2728 BLL 09 41 48.1159979 +27 28 38.815826   19.73 19.36 18.10   ~ 68 1
84 NVSS J094215+330930 Rad 09 42 15.3 +33 09 30       22.80   ~ 4 1
85 NGC 2965 QSO 09 43 19.1534626 +36 14 52.072480   17.17 16.38 8.87   ~ 69 1
86 7C 0941+2608 QSO 09 44 42.3165952275 +25 54 43.286842404     18.7 17.50   ~ 73 1
87 7C 0942+2740 G 09 45 15.62663 +27 29 11.3407           ~ 6 1
88 9C J0945+2640 QSO 09 45 30.972 +26 40 52.91       20.90   ~ 7 1
89 9C J0945+3534 QSO 09 45 38.12070861 +35 34 55.0885113   18.81 18.57 17.91   ~ 38 1
90 FIRST J094559.7+300341 Rad 09 45 59.72 +30 03 41.2           ~ 1 0
91 9C J0949+2920 G 09 49 48.1488798247 +29 20 52.957842220       19.50   ~ 5 1
92 4C 28.24 Rad 09 52 06.1 +28 28 33       19.62   ~ 18 1
93 7C 0949+3527 QSO 09 52 32.02616656 +35 12 52.4030592   19.97 19.79 18.85   ~ 71 1
94 6C 095030+323834 QSO 09 53 27.9563704482 +32 25 51.520435869     17.74 16.34   ~ 51 1
95 9C J0954+2639 Bz? 09 54 39.79651721 +26 39 24.5434066       22.54   ~ 21 1
96 Ton 1125 QSO 09 55 37.9394238209 +33 35 03.935732483     17 16.72   ~ 53 1
97 NVSS J095746+342214 Rad 09 57 46.4876977100 +34 22 15.319706507       19.92   ~ 12 1
98 7C 0955+2654 QSO 09 58 00.707 +26 40 11.55   18.9 18.72 19.3   ~ 19 1
99 Ton 469 Sy1 09 58 20.9495949602 +32 24 02.209578357   15.88 15.78 15.51   ~ 407 1
100 7C 0956+3002 QSO 09 58 58.9491806931 +29 48 04.160497236   19.26 19.04 19.47   ~ 24 1
101 NVSS J095901+251208 rG 09 59 00.875 +25 12 07.66   16.0   9.17   ~ 13 0
102 87GB 095637.5+270018 QSO 09 59 30.7029505872 +26 45 50.090214350   20.42 20.22 21.00   ~ 11 1
103 7C 0957+2807 QSO 10 00 07.4930420153 +27 52 47.683764824       20.30   ~ 10 1
104 [BCP2004] 9C J1002+3409 QSO 10 02 47.0976366160 +34 09 14.535028546   19.92 19.51 18.40   ~ 14 0
105 SDSS J100326.77+334729.1 BLL 10 03 26.7720612367 +33 47 29.085395009   20.25 19.71 18.17   ~ 12 0
106 2MASX J10041174+3010321 AGN 10 04 11.7166822865 +30 10 32.144708245       18.20   ~ 4 0
107 ICRF J145935.4+444207 QSO 14 59 35.4581059 +44 42 07.920033       19.40   ~ 31 1
108 [VV2006] J150125.7+453756 BLL 15 01 25.6844278275 +45 37 56.934541987   19.67 19.30 17.80   ~ 22 0
109 NVSS J150158+421144 rG 15 01 58.866 +42 11 44.44       18.98   ~ 4 2
110 6C 150006+400750 QSO 15 02 00.5141602619 +39 56 03.084152550   20.58 20.27 19.24   ~ 18 1
111 7C 150035.00+395912.00 BiC 15 02 29.0 +39 47 28       19.79   ~ 6 2
112 7C 150038.10+380535.00 QSO 15 02 34.777 +37 53 53.02       20.50   ~ 7 1
113 7C 150139.29+454024.00 Sy2 15 03 24.6 +45 28 44   22.71 21.59 19.42   ~ 6 1
114 NVSS J150557+370207 rG 15 05 57.182 +37 02 07.13       18.98   ~ 6 1
115 [VV2006] J150605.9+435903 QSO 15 06 05.9063752139 +43 59 03.067718007   19.85 19.62 19.61   ~ 16 1
116 ICRF J150609.5+373051 Sy2 15 06 09.52996778 +37 30 51.1325044   21.2 21.2 20.60   ~ 163 1
117 9C J1506+4239 QSO 15 06 53.04185808 +42 39 23.0353602   20.78 20.28 19.30   ~ 40 0
118 NVSS J150846+412757 Rad 15 08 46.8 +41 27 59           ~ 4 1
119 NVSS J151007+413855 Rad 15 10 07.3 +41 38 55           ~ 2 1
120 4C 37.42 Rad 15 10 08.7 +37 50 03       19.90   ~ 14 1
121 9C J1510+4221 Sy1 15 10 17.817 +42 21 54.97   21.70 21.16 19.00   ~ 23 1
122 4C 44.25 QSO 15 11 42.7684673221 +44 30 43.553166957   20.07 19.74 18.49   ~ 27 1
123 NVSS J151226+454029 Rad 15 12 26.70 +45 40 29.1       19.43   ~ 3 1
124 4C 37.43 Sy1 15 14 43.0682940988 +36 50 50.355363752   17.11 17.01 15.83   ~ 382 1
125 9C J1516+4349 BLL 15 16 31.3718251758 +43 49 49.619713013       18.50   ~ 6 1
126 6C 151452+370100 Bla 15 16 49.2588582325 +36 50 22.860515185       19.30   ~ 21 1
127 NVSS J151659+415938 Rad 15 16 59.60 +41 59 38.2       19.50   ~ 2 1
128 NVSS J151756+393641 Rad 15 17 56.8 +39 36 42       19.90   ~ 5 0
129 9C J1518+4131 QSO 15 18 47.2647304561 +41 31 35.769333729   20.30 19.98 19.04   ~ 19 1
130 NVSS J151926+425407 Rad 15 19 26.9 +42 54 08       21.50   ~ 2 1
131 6C 151741+385522 QSO 15 19 32.0806358408 +38 44 52.581988712   19.00 18.87 19.15   ~ 20 1
132 NVSS J151944+391321 Rad 15 19 44.4 +39 13 21       19.60   ~ 3 1
133 NVSS J152033+384322 Rad 15 20 33.3240741976 +38 43 22.677126799   20.0   19.19   ~ 3 1
134 87GB 151851.8+422223 Sy1 15 20 39.7 +42 11 11       18.09   ~ 43 1
135 9C J1521+4336 QSO 15 21 49.61387985 +43 36 39.2681562   19.30 18.95 18.09   ~ 89 1
136 4C 42.42 Rad 15 23 09.3 +41 56 27       15.69   ~ 10 1
137 7C 152336.70+421145.00 QSO 15 25 23.5523733028 +42 01 17.033899520   18.74 18.22 17.24   ~ 32 1
138 NVSS J152609+371232 Rad 15 26 09.8 +37 12 33       20.80   ~ 5 1
139 NVSS J152645+420144 Rad 15 26 45.48 +42 01 44.1       19.10   ~ 8 0
140 6C 152613+422944 BLL 15 28 00.0692382195 +42 19 14.861539842       18.40   ~ 3 1
141 NVSS J152819+423336 Rad 15 28 19.8 +42 33 35           ~ 2 1
142 4C 37.44 Rad 15 28 27.9 +37 38 10       19.90   ~ 23 1
143 9C J1528+3816 QSO 15 28 37.00612 +38 16 05.9028       20.30   ~ 16 1
144 NVSS J152841+452216 Rad 15 28 41.2 +45 22 16       20.00   ~ 3 2
145 87GB 152730.1+454841 BiC 15 29 10.439 +45 38 17.55       16.59   ~ 8 1
146 6C 152759+395455 QSO 15 29 49.7663223084 +39 45 09.623837958   19.95 19.61 19.21   ~ 28 1
147 ICRF J153016.2+375831 SyG 15 30 16.2521832 +37 58 31.166609       17.10   ~ 22 0
148 2MASX J15310250+4356370 Sy1 15 31 02.4916795298 +43 56 37.663443239   17.58 17.35 15.83   ~ 39 1
149 GB6 B1529+4058 Rad 15 31 40.9 +40 48 26           ~ 2 1
150 NVSS J153327+410719 Rad 15 33 27.9 +41 07 21       19.28   ~ 3 1
151 9C J1538+4225 BLL 15 38 55.7977709945 +42 25 27.013247745       20.10   ~ 4 0
152 6C 153740+422722 BLL 15 39 25.6807638431 +42 17 28.139502593   18.59 18.22 18.38   ~ 13 1
153 9C J1540+4138 BLL 15 40 42.9793931761 +41 38 16.327652682   17.94 17.68 16.72   ~ 40 1
154 9C J1541+4114 G 15 41 02.70 +41 14 28.7       19.19   ~ 2 1
155 NVSS J154109+445632 Rad 15 41 10.2 +44 56 33           ~ 3 1
156 9C J1545+4130 QSO 15 45 21.4886128541 +41 30 25.179527833       20.00   ~ 7 1
157 NVSS J154622+425756 Rad 15 46 22.20 +42 57 56.0           ~ 4 1
158 9C J1547+4208 QSO 15 47 59.0404121822 +42 08 55.555488548   20.30 20.06 18.30   ~ 17 1
159 9C J1548+4031 QSO 15 48 11.3763811385 +40 31 26.715370652   19.65 19.35 18.29   ~ 23 1
160 9C J1550+4536 Rad 15 50 43.8 +45 36 24       20.20   ~ 3 0
161 9C J1550+4545 G 15 50 54.8 +45 45 28       18.51   ~ 1 0
162 5C 13.7 G 15 53 15.7 +40 39 27       18.38   ~ 3 1
163 NVSS J155415+435027 Rad 15 54 15.7 +43 50 26           ~ 5 1
164 NVSS J155442+434820 Rad 15 54 42.1 +43 48 21       19.10   ~ 5 1
165 5C 13.42a G 15 56 36.2 +42 57 08       19.47   ~ 5 1
166 FBQS J1556+4259 QSO 15 56 57.7149793916 +42 59 43.900128834   18.57 18.41 17.14   ~ 35 1
167 4C 45.30 BLL 15 57 18.9996318 +45 22 21.537160   21.67 20.93 18.80   ~ 34 1
168 5C 13.54b QSO 15 57 55.5081726534 +40 07 38.516934695   18.65 18.40 17.66   ~ 25 1
169 NVSS J155824+414633 Rad 15 58 24.20 +41 46 33.1           ~ 3 1
170 [BCP2004] 9C J2351+3018 Rad 23 51 01.0 +30 18 51       20.50   ~ 1 0
171 4C 30.45 Rad 23 51 05.20 +30 20 00.0       18.84   ~ 10 1
172 NVSS J235207+303547 Rad 23 52 07.40 +30 35 47.8       17.70   ~ 2 1
173 NVSS J235319+313616 Rad 23 53 19.60 +31 36 16.8       19.90   ~ 3 1
174 [BCP2004] 9C J2358+2402 Rad 23 58 34.6 +24 02 00       21.60   ~ 1 0
175 SDSS J235918.21+354345.3 QSO 23 59 18.2209779115 +35 43 45.339573111       18.09   ~ 2 0
176 [BCP2004] 9C J2359+2352 Rad 23 59 39.3 +23 51 59       20.71   ~ 1 0

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2021.11.30-16:55:06

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