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: 175

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Number of rows : 175
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 [BCP2004] 9C J0002+3456 rG 00 02 18.9 +34 55 58       18.96   ~ 1 0
2 9C J0002+2942 QSO 00 02 52.4314808256 +29 42 53.227649448       19.23   ~ 6 1
3 9C J0003+2740 QSO 00 03 13.0876118640 +27 40 44.973226704       17.90   ~ 15 1
4 9C J0003+3010 QSO 00 03 55.6584 +30 10 02.573       20.46   ~ 9 1
5 4C 31.01 rG 00 05 55.703 +31 39 48.84       19.03   ~ 11 1
6 ICRF J000648.7+242236 Bla 00 06 48.78940501 +24 22 36.3922391   18.4   18.80   ~ 37 1
7 NVSS J001003+340315 Rad 00 10 03.7028453760 +34 03 14.204242332       19.31   ~ 6 1
8 NVSS J001011+283812 rG 00 10 11.06503 +28 38 11.6280       19.86   ~ 6 1
9 9C J0010+2854 QSO 00 10 27.7856311728 +28 54 58.741750944       19.56   ~ 14 1
10 9C J0010+2717 QSO 00 10 28.727 +27 17 54.40       20.02   ~ 5 1
11 NVSS J001036+261918 Rad 00 10 36.21480 +26 19 17.8100           ~ 10 1
12 NVSS J001042+295612 Rad 00 10 42.343 +29 56 09.03       19.47   ~ 4 1
13 9C J0010+2650 QSO 00 10 51.2256302784 +26 50 25.911216348       17.65   ~ 8 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 33.811 +28 03 55.67   11.73 10.84 19.06   B0III 14 1
16 9C J0011+2928 QSO 00 11 45.9813426864 +29 28 30.610541784       18.42   ~ 13 1
17 PKS J0012+2702 Rad 00 12 38.130 +27 02 41.06       15.91   ~ 5 1
18 NVSS J001247+335338 Bla 00 12 47.38217291 +33 53 38.4715185       20.15   ~ 42 1
19 9C J0012+3053 Rad 00 12 50.4 +30 53 23       19.82   ~ 3 0
20 NVSS J001332+283451 rG 00 13 32.6582318896 +28 34 51.100400346       21.01   ~ 6 1
21 NVSS J001346+264636 Rad 00 13 46.630 +26 46 35.69       20.70   ~ 3 1
22 NVSS J001433+281507 rG 00 14 33.7917 +28 15 06.709       19.50   ~ 5 1
23 3C 6 Rad 00 15 06.14742346 +32 16 13.3093056   18.0 16.8 15.61   ~ 33 1
24 9C J0015+3052 QSO 00 15 36.0222255096 +30 52 29.787119004     16.30 16.33   ~ 17 1
25 NVSS J001812+292127 Rad 00 18 12.699 +29 21 25.89       17.45   ~ 5 1
26 [BCP2004] 9C J0018+3105 Rad 00 18 31.8 +31 06 14           ~ 1 0
27 9C J0018+2907 BLL 00 18 50.9148193392 +29 07 39.380268648       18.50   ~ 13 1
28 NVSS J001908+281753 Rad 00 19 08.9 +28 17 56       17.41   ~ 4 0
29 NGC 76 rG 00 19 37.79034361 +29 56 01.9220259   14.0   7.25   ~ 53 1
30 NVSS J001952+264732 rG 00 19 52.5315656728 +26 47 31.967192477       19.27   ~ 5 1
31 9C J0019+3320 QSO 00 19 58.6718560344 +33 20 02.666512428       19.16   ~ 15 1
32 NVSS J002050+315229 Rad 00 20 50.6269 +31 52 29.382           ~ 6 1
33 NVSS J002128+271147 Rad 00 21 28.566 +27 11 46.43           ~ 4 1
34 NVSS J002130+322659 rG 00 21 29.96094 +32 26 58.6835       20.70   ~ 5 1
35 NVSS J002243+325045 Rad 00 22 43.8273 +32 50 45.877           ~ 4 1
36 NVSS J002309+311402 Rad 00 23 09.924 +31 14 01.52           ~ 3 1
37 NVSS J002314+273431 Rad 00 23 14.594 +27 34 30.55       20.40   ~ 5 1
38 NVSS J002323+253918 Rad 00 23 23.0104 +25 39 17.954       19.00   ~ 7 1
39 9C J0024+2911 QSO 00 24 34.417 +29 11 26.64       17.44   ~ 10 0
40 NVSS J002700+283027 rG 00 27 00.58558 +28 30 27.1444       20.50   ~ 4 1
41 9C J0028+3103 QSO 00 28 10.7266056864 +31 03 48.087918792   15.47 15.22 14.56   ~ 31 2
42 NVSS J002817+291428 Rad 00 28 17.086 +29 14 27.67       19.60   ~ 3 1
43 9C J0028+2954 QSO 00 28 31.9142931293 +29 54 58.278892188       19.50   ~ 11 1
44 2MASS J00283428+2408079 BLL 00 28 34.2106134408 +24 08 08.047066632       17.99   ~ 14 0
45 NVSS J002933+324451 Rad 00 29 33.0156 +32 44 50.813       22.60   ~ 5 1
46 9C J0030+2957 Rad 00 30 05.3 +29 57 07       14.26   ~ 1 0
47 NVSS J003021+341601 rG 00 30 21.4664796692 +34 16 00.374899270       20.40   ~ 4 1
48 4C 28.01 Rad 00 30 28.801 +28 33 36.69       20.10   ~ 5 1
49 NVSS J003057+280941 Rad 00 30 57.122 +28 09 41.27       19.50   ~ 4 1
50 9C J0031+3016 Sy1 00 31 21.9963187416 +30 16 02.222460300     18.2 15.95   ~ 14 1
51 NVSS J003244+275856 Rad 00 32 44.5276672200 +27 58 55.530190884       20.22   ~ 5 1
52 NVSS J003309+275226 Rad 00 33 09.714 +27 52 26.32           ~ 4 1
53 9C J0034+2754 QSO 00 34 43.4862800448 +27 54 25.717898772   18.0   17.87   ~ 40 1
54 4C 26.01 rG 00 36 05.195 +26 20 35.15     19.8 19.30   ~ 10 1
55 4C 34.31 Rad 09 17 16.570 +34 46 42.06       20.20   ~ 15 1
56 9C J0919+3324 BLL 09 19 08.78713847 +33 24 41.9433705   21.72 21.04 19.00   ~ 42 1
57 7C 092048.9+312056 QSO 09 23 47.9514 +31 07 54.170   18.70 18.51 17.90   ~ 61 1
58 7C 092054.7+282821 Bla 09 23 51.52339821 +28 15 25.0219334   19.70 19.48 19.00   ~ 112 1
59 4C 32.28 rG 09 25 32.67356 +31 59 52.8815       21.50   ~ 14 1
60 6C 092242+314056 BLL 09 25 43.65026836 +31 27 10.8028961   19.14 18.72 18.10   ~ 44 1
61 NVSS J092645+275821 rG 09 26 45.1781 +27 58 21.123           ~ 9 1
62 9C J0927+2954 QSO 09 27 22.5110 +29 54 13.402     21.0 21.40   ~ 13 1
63 7C 0924+3047 QSO 09 27 39.8045805816 +30 34 16.760015004   19.2 19.00 19.55   ~ 27 1
64 9C J0928+2904 AG? 09 28 15.0951 +29 04 17.490           ~ 5 1
65 7C 0927+3516 BLL 09 30 55.27911112 +35 03 37.6081515   20.98 20.35 18.40   ~ 77 1
66 9C J0931+2750 QSO 09 31 51.7825 +27 50 50.608       20.10   ~ 24 1
67 NVSS J093214+283729 rG 09 32 14.2289 +28 37 30.179       18.23   ~ 8 1
68 6C 092953+335301 BLL 09 32 55.0568 +33 39 29.572       15.86   ~ 9 1
69 9C J0933+2845 QSO 09 33 37.2819249600 +28 45 32.315668668   19.63 17.94 17.50   ~ 83 1
70 NVSS J093339+325445 Rad 09 33 39.7403 +32 54 44.555           ~ 6 1
71 NVSS J093420+275603 rG 09 34 20.42877 +27 56 03.7762       20.10   ~ 1 0
72 7C 093149.5+310423 QSO 09 34 47.2353393552 +30 50 55.714935588   20.77 20.53 19.70   ~ 29 1
73 9C J0935+2917 QSO 09 35 36.1812274680 +29 17 10.921542324       21.00   ~ 10 0
74 9C J0936+3207 QSO 09 36 03.8851666032 +32 07 09.343504812   17.84 17.44 17.29   ~ 41 1
75 9C J0936+3313 LIN 09 36 09.3738424789 +33 13 08.458026732       13.85   ~ 26 1
76 7C 0933+2637 QSO 09 36 14.2435309488 +26 24 08.101873368   18.56 18.36 17.30   ~ 18 1
77 NVSS J093706+320654 Rad 09 37 06.3813313704 +32 06 55.570262256       19.50   ~ 6 1
78 NVSS J093716+341133 rG 09 37 16.600 +34 11 34.26       21.20   ~ 4 1
79 9C J0939+2908 QSO 09 39 01.6191 +29 08 28.337       20.50   ~ 13 1
80 9C J0940+2626 Sy2 09 40 13.4746598688 +26 26 56.614293816   21.98 21.30 19.60   ~ 21 1
81 9C J0940+2603 BLL 09 40 14.72278286 +26 03 29.9461593   20.32 19.62 19.21   ~ 53 1
82 6C 093723+302901 QSO 09 40 18.8460426600 +30 15 09.930529476   18.83 18.63 17.95   ~ 32 1
83 9C J0941+2728 BLL 09 41 48.1135 +27 28 38.818   19.73 19.36 18.10   ~ 94 1
84 NVSS J094215+330930 Rad 09 42 15.2978 +33 09 29.833       22.80   ~ 6 1
85 NGC 2965 Bla 09 43 19.15347161 +36 14 52.0723746   17.17 16.38 8.87   ~ 91 1
86 7C 0941+2608 QSO 09 44 42.3172763448 +25 54 43.279928136     18.7 17.50   ~ 81 1
87 NVSS J094515+272911 rG 09 45 15.6246 +27 29 11.351           ~ 8 1
88 9C J0945+2640 QSO 09 45 30.972 +26 40 52.91       20.90   ~ 8 1
89 ICRF J094538.1+353455 Sy1 09 45 38.12071783 +35 34 55.0887210   18.81 18.57 17.91   ~ 51 1
90 FIRST J094559.7+300341 Rad 09 45 59.722 +30 03 41.19           ~ 1 0
91 9C J0949+2920 QSO 09 49 48.1508 +29 20 52.950       19.50   ~ 9 1
92 4C 28.24 rG 09 52 06.09333 +28 28 32.1785       19.62   ~ 21 1
93 7C 094933.0+352656 Bla 09 52 32.02616886 +35 12 52.4030492   19.97 19.79 18.85   ~ 88 1
94 6C 095030+323834 Bla 09 53 27.9566471448 +32 25 51.520311120     17.74 16.34   ~ 71 1
95 9C J0954+2639 Bz? 09 54 39.79652916 +26 39 24.5433239       22.54   ~ 26 1
96 Ton 1125 QSO 09 55 37.9390883544 +33 35 03.940465164     17 16.72   ~ 67 1
97 NVSS J095746+342214 Rad 09 57 46.4852 +34 22 15.265       19.92   ~ 15 1
98 7C 0955+2654 QSO 09 58 00.7101869016 +26 40 11.505485316   18.9 18.72 19.3   ~ 26 1
99 Ton 469 Bla 09 58 20.9496221568 +32 24 02.208417372   15.88 15.78 15.51   ~ 442 1
100 7C 0956+3002 QSO 09 58 58.9479353976 +29 48 04.182666120   19.26 19.04 19.47   ~ 33 1
101 MCG+04-24-008 rG 09 59 00.8653536336 +25 12 08.179396200   16.0   9.17   ~ 17 0
102 SDSS J095930.70+264550.1 QSO 09 59 30.7023898896 +26 45 50.088111948   20.42 20.22 21.00   ~ 17 1
103 9C J1000+2752 QSO 10 00 07.4928816216 +27 52 47.684672652       20.30   ~ 16 1
104 SDSS J100247.10+340914.6 QSO 10 02 47.0968371408 +34 09 14.546090196   19.92 19.51 18.40   ~ 18 0
105 SDSS J100326.77+334729.1 BLL 10 03 26.7739860720 +33 47 29.071653936   20.25 19.71 18.17   ~ 14 0
106 FIRST J100411.7+301032 Sy1 10 04 11.7167912448 +30 10 32.144029680       18.20   ~ 4 0
107 ICRF J145935.4+444207 Bla 14 59 35.45809509 +44 42 07.9199524       19.40   ~ 48 1
108 [VV2006] J150125.7+453756 BLL 15 01 25.6840702560 +45 37 56.930486592   19.67 19.30 17.80   ~ 27 0
109 NVSS J150158+421144 rG 15 01 58.866 +42 11 44.44       18.98   ~ 5 2
110 6C 150006+400750 QSO 15 02 00.5142747336 +39 56 03.084496764   20.58 20.27 19.24   ~ 26 1
111 NVSS J150228+394728 rG 15 02 28.94928 +39 47 27.9275       19.79   ~ 10 2
112 7C 150038.10+380535.00 QSO 15 02 34.777 +37 53 53.02       20.50   ~ 9 1
113 7C 150139.29+454024.00 Sy2 15 03 24.54154 +45 28 44.0511   22.71 21.59 19.42   ~ 9 1
114 NVSS J150557+370207 rG 15 05 57.1819542624 +37 02 07.157569740       18.98   ~ 9 1
115 [VV2006] J150605.9+435903 QSO 15 06 05.9066 +43 59 03.050   19.85 19.62 19.61   ~ 23 1
116 6C 150412+374224 Bla 15 06 09.52997529 +37 30 51.1325012   21.2 21.2 20.60   ~ 213 1
117 6C 150504+425103 Bla 15 06 53.04184890 +42 39 23.0354724   20.78 20.28 19.30   ~ 55 1
118 NVSS J150846+412757 Rad 15 08 46.742 +41 27 58.64           ~ 5 1
119 NVSS J151007+413855 Rad 15 10 07.3036 +41 38 54.993           ~ 4 1
120 4C 37.42 Rad 15 10 08.668 +37 50 02.88       19.90   ~ 16 1
121 9C J1510+4221 Sy1 15 10 17.8247131512 +42 21 54.992123892   21.70 21.16 19.00   ~ 28 1
122 4C 44.25 QSO 15 11 42.7682129400 +44 30 43.551205884   20.07 19.74 18.49   ~ 35 1
123 ICRF J151443.0+365050 Sy1 15 14 43.0683049560 +36 50 50.355436776   17.11 17.01 15.83   ~ 422 1
124 9C J1516+4349 BLL 15 16 31.3718543256 +43 49 49.613069136       18.50   ~ 10 1
125 6C 151452+370100 Bla 15 16 49.2590288520 +36 50 22.865190252       19.30   ~ 37 1
126 NVSS J151659+415938 Rad 15 16 59.62 +41 59 37.9       19.50   ~ 3 1
127 NVSS J151756+393641 Rad 15 17 56.873 +39 36 41.79       19.90   ~ 5 0
128 9C J1518+4131 QSO 15 18 47.2649441256 +41 31 35.782204152   20.30 19.98 19.04   ~ 26 1
129 NVSS J151926+425407 rG 15 19 26.90957 +42 54 08.2325       21.50   ~ 5 1
130 7C 151740.60+385550.00 QSO 15 19 32.0803541856 +38 44 52.580616036   19.00 18.87 19.15   ~ 29 1
131 NVSS J151944+391321 Rad 15 19 44.417 +39 13 21.52       19.60   ~ 4 1
132 6C 151840+385411 QSO 15 20 33.3235061544 +38 43 22.685109348   20.0   19.19   ~ 5 1
133 6C 151853+422209 Bla 15 20 39.7213 +42 11 11.457       18.09   ~ 78 1
134 9C J1521+4336 Bla 15 21 49.61387806 +43 36 39.2681695   19.30 18.95 18.09   ~ 129 1
135 4C 42.42 rG 15 23 09.30685 +41 56 25.8190       15.69   ~ 11 1
136 7C 152336.70+421145.00 BLL 15 25 23.5523439552 +42 01 17.031554364   18.74 18.22 17.24   ~ 39 1
137 NVSS J152609+371232 rG 15 26 09.78540 +37 12 33.0415       20.80   ~ 6 1
138 NVSS J152645+420144 Rad 15 26 45.48 +42 01 44.1       19.10   ~ 8 0
139 6C 152613+422944 BLL 15 28 00.0688401408 +42 19 14.854480608       18.40   ~ 4 1
140 NVSS J152819+423336 Rad 15 28 19.747 +42 33 35.26           ~ 3 1
141 4C 37.44 Rad 15 28 27.92908 +37 38 09.2758       19.90   ~ 25 1
142 ICRF J152837.0+381605 Sy1 15 28 37.0087 +38 16 05.932       20.30   ~ 25 1
143 NVSS J152841+452216 rG 15 28 41.15513 +45 22 16.0257       20.00   ~ 5 1
144 NVSS J152910+453818 rG 15 29 10.4370426744 +45 38 17.513864268       16.59   ~ 9 1
145 6C 152759+395455 QSO 15 29 49.7660833200 +39 45 09.628777044   19.95 19.61 19.21   ~ 37 1
146 ICRF J153016.2+375831 Sy2 15 30 16.2530 +37 58 31.162       17.10   ~ 32 1
147 9C J1531+4356 Bla 15 31 02.4912222624 +43 56 37.664207448   17.58 17.35 15.83   ~ 50 1
148 NVSS J153140+404819 Rad 15 31 41.957 +40 48 32.49           ~ 4 1
149 NVSS J153327+410719 rG 15 33 27.92591 +41 07 21.0344       19.28   ~ 6 1
150 9C J1538+4225 BLL 15 38 55.7965 +42 25 27.045       20.10   ~ 6 1
151 6C 153740+422722 BLL 15 39 25.6817583408 +42 17 28.148091504   18.59 18.22 18.38   ~ 17 1
152 9C J1540+4138 BLL 15 40 42.9792290544 +41 38 16.330065000   17.94 17.68 16.72   ~ 49 1
153 NVSS J154102+411428 rG 15 41 03.20 +41 14 28.6       19.19   ~ 3 1
154 NVSS J154109+445632 Rad 15 41 10.221 +44 56 32.80           ~ 4 1
155 9C J1545+4130 QSO 15 45 21.4883125272 +41 30 25.205470236       20.00   ~ 16 1
156 NVSS J154622+425756 Rad 15 46 22.246 +42 57 56.23           ~ 5 1
157 9C J1547+4208 QSO 15 47 59.0423505720 +42 08 55.525457292   20.30 20.06 18.30   ~ 23 1
158 7C 154625.80+404039.00 QSO 15 48 11.3757270528 +40 31 26.707177416   19.65 19.35 18.29   ~ 30 1
159 9C J1550+4536 QSO 15 50 43.8858 +45 36 24.206       20.20   ~ 10 1
160 9C J1550+4545 QSO 15 50 54.788 +45 45 27.62       18.51   ~ 3 0
161 B3 1551+408 rG 15 53 15.7787 +40 39 26.991       18.38   ~ 5 1
162 NVSS J155415+435027 Rad 15 54 15.6850 +43 50 26.074           ~ 7 1
163 9C J1554+4348 QSO 15 54 42.1521327480 +43 48 20.534504040   21.00 20.37 19.10   ~ 25 1
164 NVSS J155636+425709 rG 15 56 36.166 +42 57 07.41       19.47   ~ 6 1
165 FBQS J1556+4259 QSO 15 56 57.7153388400 +42 59 43.902319632   18.57 18.41 17.14   ~ 43 1
166 4C 45.30 BLL 15 57 18.99964975 +45 22 21.5373729   21.67 20.93 18.80   ~ 44 1
167 5C 13.54b QSO 15 57 55.5081332160 +40 07 38.513915040   18.65 18.40 17.66   ~ 35 1
168 NVSS J155824+414633 Rad 15 58 24.22 +41 46 32.9           ~ 4 1
169 [BCP2004] 9C J2351+3018 Rad 23 51 01.0 +30 18 51       20.50   ~ 2 0
170 4C 30.45 Rad 23 51 05.201 +30 20 00.86       18.84   ~ 11 1
171 NVSS J235207+303547 Rad 23 52 07.39 +30 35 47.8       17.70   ~ 3 1
172 NVSS J235319+313616 BLL 23 53 19.5469334640 +31 36 16.778237250       19.90   ~ 13 1
173 [BCP2004] 9C J2358+2402 Rad 23 58 34.6 +24 02 00       21.60   ~ 1 0
174 SDSS J235918.21+354345.3 QSO 23 59 18.2206097088 +35 43 45.343247520       18.09   ~ 4 0
175 [BCP2004] 9C J2359+2352 Rad 23 59 39.3 +23 51 59       20.71   ~ 1 0

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