2008ApJ...673...78L

Query : 2008ApJ...673...78L

2008ApJ...673...78L - Astrophys. J., 673, 78-95 (2008/January-3)

A deep, high-resolution survey of the low-frequency radio sky.

LENC E., GARRETT M.A., WUCKNITZ O., ANDERSON J.M. and TINGAY S.J.

Abstract (from CDS):

We report on the first wide-field, very long baseline interferometry (VLBI) survey at 90 cm. The survey area consists of two overlapping 28 deg2 fields centered on the quasar J0226+3421 and the gravitational lens B0218+357. A total of 618 sources were targeted in these fields, based on identifications from Westerbork Northern Sky Survey (WENSS) data. Of these sources, 272 had flux densities that, if unresolved, would fall above the sensitivity limit of the VLBI observations. A total of 27 sources were detected as far as 2° from the phase center. The results of the survey suggest that at least 10% of moderately faint (S∼100 mJy) sources found at 90 cm contain compact components smaller than ∼0.1"-0.3" and stronger than 10% of their total flux densities. A ∼90 mJy source was detected in the VLBI data that was not seen in the WENSS and NRAO VLA Sky Survey (NVSS) data and may be a transient or highly variable source that has been serendipitously detected. This survey is the first systematic (and nonbiased), deep, high-resolution survey of the low-frequency radio sky. It is also the widest field of view VLBI survey with a single pointing to date, exceeding the total survey area of previous higher frequency surveys by 2 orders of magnitude. These initial results suggest that new low-frequency telescopes, such as LOFAR, should detect many compact radio sources and that plans to extend these arrays to baselines of several thousand kilometers are warranted.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Active - quasars: individual (QSO B0218+357) - quasars: individual (J0226+3421) - Radiation Mechanisms: General - Techniques: Interferometric

VizieR on-line data: <Available at CDS (J/ApJ/673/78): table2.dat table3.dat table4.dat>

Simbad objects: 130

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Number of rows : 130
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 Z 522-118 rG 02 09 38.5601991144 +35 47 50.778945420   14.9 13.0     ~ 154 2
2 NVSS J021128+360126 Rad 02 11 28.859 +36 01 25.78           ~ 3 1
3 NVSS J021154+344401 Rad 02 11 54.07 +34 44 01.5           ~ 6 1
4 NVSS J021214+351829 Rad 02 12 14.491 +35 18 27.99           ~ 3 1
5 NVSS J021230+355016 Rad 02 12 29.274 +35 50 13.92           ~ 3 1
6 NVSS J021322+370700 Rad 02 13 22.439 +37 06 59.33           ~ 3 1
7 NVSS J021328+341821 rG 02 13 28.45 +34 18 20.0   21.0       ~ 16 1
8 NVSS J021343+354732 Rad 02 13 43.38 +35 47 30.2           ~ 3 1
9 NVSS J021401+353231 Rad 02 14 01.35 +35 32 29.5           ~ 4 1
10 NVSS J021411+364822 Rad 02 14 11.22 +36 48 24.5           ~ 3 1
11 NVSS J021413+352512 Rad 02 14 13.68 +35 25 09.2           ~ 3 2
12 NVSS J021414+360437 Rad 02 14 14.41 +36 04 37.5           ~ 3 1
13 NVSS J021429+351921 Rad 02 14 29.97 +35 19 21.0           ~ 4 1
14 4C 34.06 Rad 02 14 58.111 +35 06 38.97           ~ 16 1
15 4C 36.03 Rad 02 15 18.0365601288 +36 18 07.509546288           ~ 7 1
16 NVSS J021529+341947 Rad 02 15 29.388 +34 19 46.74           ~ 4 1
17 NVSS J021531+372842 Rad 02 15 31.608 +37 28 40.51           ~ 4 1
18 NVSS J021539+375008 Rad 02 15 39.963 +37 50 08.53           ~ 3 1
19 NVSS J021548+360658 Rad 02 15 48.71 +36 06 58.3           ~ 3 1
20 NVSS J021549+344304 Rad 02 15 49.4337805008 +34 43 04.799099460           ~ 7 1
21 NVSS J021557+361651 Rad 02 15 57.16 +36 16 51.2           ~ 3 1
22 WN B0213.0+3614B Rad 02 16 01.2 +36 27 59           ~ 1 0
23 NVSS J021619+380438 Rad 02 16 19.600 +38 04 38.46           ~ 5 1
24 NVSS J021659+355719 Rad 02 16 59.78 +35 57 19.9           ~ 3 1
25 NVSS J021705+344429 Rad 02 17 05.90 +34 44 29.6           ~ 3 1
26 NVSS J021722+371447 Rad 02 17 23.050 +37 14 46.40           ~ 4 2
27 NVSS J021729+354758 Rad 02 17 29.52 +35 47 56.7           ~ 3 1
28 NVSS J021735+351722 Rad 02 17 35.2 +35 17 22           ~ 3 1
29 5C 6.160 QSO 02 17 43.3268660568 +33 35 05.620078860     19.00     ~ 17 1
30 NVSS J021811+372435 Rad 02 18 11.380 +37 24 35.27           ~ 3 1
31 NVSS J021828+354958 Rad 02 18 28.6 +35 49 57           ~ 7 1
32 NVSS J021829+353033 Rad 02 18 29.82 +35 30 31.8           ~ 3 1
33 NVSS J021830+365027 Rad 02 18 31.029 +36 50 26.79           ~ 3 1
34 7C 021548.00+362642.00 Bla 02 18 50.0425653672 +36 40 42.589654464           ~ 38 1
35 NVSS J021853+363036 Rad 02 18 53.89 +36 30 36.3           ~ 3 1
36 IC 1792 G 02 19 01.0753436352 +34 27 44.416758240   14.0       ~ 22 1
37 NVSS J021908+381003 Rad 02 19 07.465 +38 10 21.86           ~ 4 1
38 NVSS J021911+333151 Rad 02 19 11.598 +33 31 50.97           ~ 5 1
39 NVSS J021913+341937 rG 02 19 15.50 +34 19 40.8           ~ 11 1
40 NVSS J021921+371005 Rad 02 19 21.83 +37 10 06.3           ~ 3 1
41 NVSS J021937+342309 rG 02 19 37.85 +34 23 09.4           ~ 17 1
42 NVSS J021940+371304 Rad 02 19 40.64 +37 13 04.1           ~ 3 1
43 NVSS J021942+353743 Rad 02 19 42.32 +35 37 44.3           ~ 4 1
44 NVSS J021948+334818 rG 02 19 48.7 +33 48 12           ~ 17 1
45 NVSS J021959+374554 Rad 02 19 58.878 +37 45 53.63           ~ 4 1
46 NVSS J022010+365848 Rad 02 20 10.86 +36 58 48.2           ~ 3 1
47 NVSS J022023+361435 Rad 02 20 23.72 +36 14 35.7           ~ 3 1
48 NVSS J022029+344816 Rad 02 20 29.87 +34 48 18.9           ~ 3 1
49 5C 6.237 QSO 02 20 48.0530998224 +32 41 06.464855220   19.0 19.40     ~ 43 1
50 NVSS J022048+350633 Rad 02 20 49.09 +35 06 32.5           ~ 3 1
51 NVSS J022056+345632 Rad 02 20 56.04 +34 56 30.6           ~ 3 1
52 6C 021803+354230 BLL 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 603 3
53 NVSS J022109+343337 Rad 02 21 09.652 +34 33 36.34           ~ 4 1
54 NVSS J022133+364551 Rad 02 21 33.13 +36 45 51.3           ~ 3 1
55 NVSS J022139+335633 Rad 02 21 39.96 +33 56 33.1           ~ 5 1
56 5C 6.251 QSO 02 21 50.2281490176 +34 16 19.073965080   19.0       ~ 15 1
57 NVSS J022156+340719 Rad 02 21 56.69 +34 07 18.3           ~ 4 1
58 NVSS J022206+333650 Rad 02 22 06.63 +33 36 49.0           ~ 3 1
59 NVSS J022207+351725 Rad 02 22 07.92 +35 17 24.9           ~ 3 1
60 NVSS J022210+354651 Rad 02 22 10.12 +35 46 51.1           ~ 3 1
61 NVSS J022215+373116 rG 02 22 15.4607767008 +37 31 15.596367924           ~ 9 1
62 NVSS J022216+335327 rG 02 22 16.936 +33 53 26.81           ~ 9 1
63 NVSS J022237+360100 Rad 02 22 37.940 +36 01 00.66           ~ 4 1
64 NVSS J022238+342930 Rad 02 22 38.27 +34 29 30.7           ~ 3 1
65 NVSS J022240+341816 Rad 02 22 40.71 +34 18 15.2           ~ 3 1
66 7C 021949.20+334340.00 QSO 02 22 48.7196178288 +33 57 18.978482556     19.99     ~ 18 1
67 NVSS J022307+371807 Rad 02 23 07.97 +37 18 06.9           ~ 3 1
68 NVSS J022307+325143 Rad 02 23 07.98 +32 51 43.2           ~ 5 1
69 NVSS J022325+344722 Rad 02 23 25.12 +34 47 22.5           ~ 3 1
70 NVSS J022333+332435 Rad 02 23 33.8 +33 24 35   21.0       ~ 6 1
71 NVSS J022346+360503 Rad 02 23 46.81 +36 05 02.7           ~ 3 1
72 NVSS J022347+341508 Rad 02 23 47.553 +34 15 08.04           ~ 4 1
73 NVSS J022350+354132 Rad 02 23 50.20 +35 41 32.2           ~ 3 1
74 NVSS J022402+345424 Rad 02 24 03.0448 +34 54 23.818           ~ 4 1
75 NVSS J022411+333921 Rad 02 24 11.63 +33 39 20.8           ~ 6 1
76 5C 6.282 QSO 02 24 41.07 +34 19 42.1           ~ 12 1
77 NVSS J022456+343035 Rad 02 24 56.169 +34 30 35.71           ~ 4 1
78 NVSS J022522+370342 Rad 02 25 22.40 +37 03 44.7           ~ 3 1
79 Z 523-37 Bla 02 25 27.3274623754 +37 10 27.746857321   15.0   9.5   ~ 65 1
80 NVSS J022528+355714 Rad 02 25 28.78 +35 57 13.5           ~ 3 1
81 NVSS J022530+362700 Rad 02 25 30.58 +36 26 58.8           ~ 3 1
82 NVSS J022542+360722 Rad 02 25 42.65 +36 07 22.7           ~ 3 1
83 NVSS J022544+363637 Rad 02 25 44.60 +36 36 35.9           ~ 3 1
84 NVSS J022604+361720 Rad 02 26 04.45 +36 17 20.3           ~ 4 1
85 4C 34.07 QSO 02 26 10.33325265 +34 21 30.2874853   21.3       ~ 99 1
86 NVSS J022632+351523 Rad 02 26 32.34 +35 15 22.6           ~ 3 1
87 4C 35.04 Rad 02 26 36.163 +35 55 45.90           ~ 6 1
88 NVSS J022655+340456 Rad 02 26 55.465 +34 04 57.05           ~ 3 1
89 NVSS J022716+344345 Rad 02 27 16.36 +34 43 40.7           ~ 3 1
90 NVSS J022738+352844 Rad 02 27 38.25 +35 28 44.3           ~ 3 1
91 NVSS J022743+345618 Rad 02 27 44.07 +34 56 18.9           ~ 3 1
92 NVSS J022748+361128 Rad 02 27 48.8541 +36 11 27.785           ~ 5 1
93 NVSS J022750+363046 Rad 02 27 50.23 +36 30 46.8           ~ 3 1
94 NVSS J022751+344732 Rad 02 27 51.4511129664 +34 47 32.772666120           ~ 3 1
95 NVSS J022754+341947 Rad 02 27 54.41 +34 19 49.0           ~ 3 1
96 NVSS J022759+343241 Rad 02 27 59.8311 +34 32 40.016           ~ 5 1
97 4C 36.04A Rad 02 28 01.884 +37 03 33.60           ~ 6 1
98 NVSS J022803+331128 Rad 02 28 03.849 +33 11 28.64           ~ 5 1
99 NVSS J022807+363409 Rad 02 28 07.27 +36 34 07.4           ~ 3 1
100 NVSS J022813+371258 Rad 02 28 13.581 +37 12 57.39           ~ 5 1
101 NVSS J022825+332615 Rad 02 28 25.12 +33 26 15.3           ~ 4 1
102 NVSS J022830+330911 Rad 02 28 30.69 +33 09 10.9           ~ 3 1
103 NVSS J022834+340104 Rad 02 28 34.64 +34 01 02.1           ~ 3 1
104 NVSS J022842+370904 Rad 02 28 42.07 +37 09 05.0           ~ 3 1
105 NVSS J022845+335323 Rad 02 28 45.59 +33 53 22.4           ~ 3 1
106 NVSS J022857+361613 Rad 02 28 57.81 +36 16 12.7           ~ 3 1
107 NVSS J022910+352241 Rad 02 29 09.98 +35 22 40.6           ~ 3 1
108 NVSS J022919+354741 Rad 02 29 20.00 +35 47 41.7           ~ 3 1
109 NVSS J022931+333421 Rad 02 29 31.53 +33 34 22.1           ~ 4 1
110 NVSS J022935+363123 Rad 02 29 35.66 +36 31 23.2           ~ 3 1
111 NVSS J023001+334850 Rad 02 30 01.56 +33 48 51.6           ~ 3 1
112 4C 32.11 Rad 02 30 12.633 +32 19 23.38           ~ 8 1
113 NVSS J023025+372619 Rad 02 30 25.706 +37 26 18.91           ~ 4 1
114 NVSS J023042+333801 Rad 02 30 42.58 +33 38 01.1           ~ 5 1
115 NVSS J023056+333516 Rad 02 30 56.75 +33 35 16.5           ~ 6 1
116 NVSS J023111+360027 rG 02 31 11.753 +36 00 28.40         25.0 ~ 14 1
117 4C 37.06 Rad 02 31 15.008 +37 42 57.30           ~ 9 1
118 NVSS J023159+344227 Rad 02 31 59.49 +34 42 27.1           ~ 5 1
119 NVSS J023205+334522 Rad 02 32 05.84 +33 45 21.7           ~ 3 1
120 NVSS J023221+333210 Rad 02 32 21.37 +33 32 10.9           ~ 4 1
121 NVSS J023221+350106 Rad 02 32 21.57 +35 01 05.7           ~ 3 1
122 7C 022927.30+341049.00 QSO 02 32 28.8769824336 +34 23 46.713498468   20.70 19     ~ 197 1
123 4C 35.05 Rad 02 32 29.305 +35 30 55.40           ~ 21 2
124 NVSS J023312+325651 Rad 02 33 12.511 +32 56 51.57           ~ 3 1
125 ICRF J023320.4+344253 BLL 02 33 20.42004002 +34 42 53.9891227     20.80 18.3   ~ 23 1
126 NVSS J023415+351351 Rad 02 34 15.26 +35 13 52.0           ~ 3 1
127 NVSS J023526+341831 Rad 02 35 26.345 +34 18 31.94           ~ 3 1
128 NVSS J023619+351115 Rad 02 36 19.253 +35 11 15.34           ~ 3 1
129 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
130 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 430 0

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