2000MNRAS.318..827M

Query : 2000MNRAS.318..827M

2000MNRAS.318..827M - Mon. Not. R. Astron. Soc., 318, 827-840 (2000/November-1)

Compact radio sources variable at 151MHz - II. High-resolution observations of an unbiased sample.

MINNS A.R. and RILEY J.M.

Abstract (from CDS):

High-resolution observations, made with the Very Large Array (VLA) at 330MHz, 1.4GHz and 8.4GHz and with the Ryle Telescope at 15GHz, are presented of a sample of 23 sources which are variable at 151MHz, concluding the observations of an unbiased sample of 40 such sources. The 8.4GHz emission of almost all of the sources is dominated by structure on a scale ≲0.1arcsec - the spectra of these compact components are such that they will also dominate the emission at 151MHz; the number of sources for which this is not the case is consistent with the number of spurious variables expected to be found in the sample. About two-thirds of the sources have the self-absorbed, or flat, spectra expected from their size. The majority (∼75per cent) of the sources belong to the compact steep-spectrum (CSS) class, but are generally more compact than other CSS sources; the CSS variables also appear to exhibit more spectral ageing than typical CSS sources, which may indicate a difference in the nature of the sources.

Abstract Copyright: 2000, Royal Astronomical Society

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

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 - 2026 		#notes
1 NVSS J060330+452302 Rad 06 03 29.98 +45 23 01.9           ~ 3 1
2 3C 151 QSO 06 04 35.62879242 +44 13 58.5481902           ~ 53 1
3 7C 0602+4030 QSO 06 05 50.85536720 +40 30 08.1034903           ~ 27 1
4 NVSS J060650+440140 Rad 06 06 50.2204358208 +44 01 40.869745968           ~ 9 1
5 7C 061339.27+413728.77 Rad 06 13 39.27 +41 37 28.8           ~ 1 0
6 7C 061148.02+414537.66 Rad 06 15 21.3 +41 44 39           ~ 3 0
7 7C 062159.95+474549.76 Rad 06 25 46.83 +47 44 05.5           ~ 3 0
8 7C 070034.50+453156.15 Rad 07 04 13.70 +45 27 26.6           ~ 2 0
9 NVSS J070648+464756 rG 07 06 48.0722 +46 47 56.187   23.1       ~ 39 1
10 7C 070555.14+451410.55 Rad 07 09 33.22 +45 09 18.6           ~ 3 0
11 7C 070702.44+473709.17 Rad 07 10 46.00 +47 32 12.4           ~ 3 0
12 7C 095838.04+464703.77 Rad 10 01 47.12 +46 32 35.3           ~ 3 0
13 NVSS J100905+381552 Rad 10 09 05.8248 +38 15 50.894           ~ 6 1
14 NVSS J101004+452223 rG 10 10 04.96277 +45 22 22.6806           ~ 5 1
15 7C 1007+4214 rG 10 10 24.62 +41 59 34.6   23.3 21.8     ~ 3 0
16 NVSS J101105+355211 Rad 10 11 05.9878 +35 52 11.557           ~ 7 1
17 7C 100852.41+421924.11 Rad 10 11 54.02 +42 04 34.3           ~ 1 0
18 7C 100902.54+415643.64 Rad 10 12 03.7 +41 41 54           ~ 3 0
19 7C 101429.51+435813.36 Rad 10 17 31.4 +43 43 12           ~ 4 0
20 7C 1015+3557 Bla 10 18 10.98810472 +35 42 39.4409041   18.62 18.07 17.65   ~ 212 1
21 7C 1016+4423 rG 10 19 48.2 +44 08 25           ~ 5 0
22 7C 101918.47+393238.28 Rad 10 22 15.23 +39 17 28.5           ~ 2 0
23 7C 102536.00+360828.00 QSO 10 28 28.8778760688 +35 53 07.344379608           ~ 20 1
24 7C 102556.69+372215.24 Rad 10 28 50.4 +37 06 54           ~ 4 0
25 7C 102723.35+432433.56 Rad 10 30 21.44 +43 09 09.5           ~ 1 0
26 7C 1030+4131 Bla 10 33 03.70787172 +41 16 06.2329333   20.01 19.64 19.97   ~ 234 1
27 7C 103041.04+502703.05 Rad 10 33 44.87 +50 11 33.4           ~ 1 0
28 NVSS J103449+373121 rG 10 34 49.10745 +37 31 21.4196           ~ 3 1
29 7C 104052.18+330847.22 Rad 10 43 40.35 +32 53 02.1           ~ 1 0
30 6C 104219+370229 QSO 10 45 10.2111546408 +36 46 43.687399944   19.15 19.07     ~ 27 1
31 7C 104341.37+293806.67 Rad 10 46 27.24 +29 22 17.5           ~ 2 0
32 NVSS J104733+450852 rG 10 47 33.7345 +45 08 52.523           ~ 18 1
33 7C 1045+3144 Rad 10 48 +31.5           ~ 1 0
34 7C 104645.57+414147.13 Rad 10 49 37.58 +41 25 53.9           ~ 4 0
35 NVSS J104953+444630 rG 10 49 53.82870 +44 46 27.7442           ~ 7 1
36 7C 104755.99+384745.32 Rad 10 50 45.94 +38 31 50.3           ~ 2 0
37 7C 104810.40+344611.00 Bla 10 50 58.1200 +34 30 10.890   20.70 20.42 19.9   ~ 54 1
38 7C 1049+3827 Sy2 10 52 11.7875 +38 11 43.913   20.9 20.9     ~ 37 1
39 7C 105256.06+380202.49 Rad 10 55 44.5 +37 46 01           ~ 4 0
40 5C 2.56 QSO 10 58 13.0465154136 +49 39 36.039221208   19.87 19.71     ~ 90 1
41 6C 105714+302917 AG? 10 59 58.4824 +30 12 22.465           ~ 4 1
42 5C 2.123 QSO 11 04 26.8742712000 +49 28 24.393665856   20.83 20.26     ~ 33 1
43 7C 110140.89+382849.02 Rad 11 04 27.61 +38 12 37.5           ~ 2 0
44 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2

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