2002A&A...391..149S

Query : 2002A&A...391..149S

2002A&A...391..149S - Astronomy and Astrophysics, volume 391149-157 (2002/8-3)

CSSs in a sample of B2 radio sources of intermediate strength.

SAIKIA D.J., THOMASSON P., SPENCER R.E., MANTOVANI F., SALTER C.J. and JEYAKUMAR S.

Abstract (from CDS):

We present radio observations of 19 candidate compact steep-spectrum (CSS) objects selected from a well-defined, complete sample of 52 B2 radio sources of intermediate strength. These observations were made with the VLA A-array at 4.835GHz. The radio structures of the entire sample are summarised and the brightness asymmetries within the compact sources are compared with those of the more extended ones, as well as with those in the 3CRR sample and the CSSs from the B3-VLA sample. About 25 per cent of the CSS sources exhibit large brightness asymmetries, with a flux density ratio for the opposing lobes of >5, possibly due to interaction of the jets with infalling material. The corresponding percentage for the larger-sized objects is only about 5 per cent. We also investigate a possible dependence of the flux density asymmetry of the lobes on redshift, since this might be affected by more interactions and mergers in the past. No such dependence is found. A few individual objects of interest are discussed in the paper.

Abstract Copyright: ∼

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

CDS comments: p.153: cross-id. of individual sources with NVSS ID is not possible, incomplete format.

Simbad objects: 52

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Number of rows : 52
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 J000214+313941 Rad 00 02 14.116 +31 39 41.59           ~ 6 1
2 NVSS J000540+320605 Rad 00 05 40.407 +32 06 05.95           ~ 6 1
3 4C 31.01 rG 00 05 55.703 +31 39 48.84       19.03   ~ 11 1
4 NVSS J001007+304521 Rad 00 10 07.26480 +30 45 19.5696           ~ 8 1
5 4C 33.01 QSO 00 10 25.6278080496 +33 29 36.814686216     18.8     ~ 48 1
6 NVSS J001107+321713 Rad 00 11 07.28 +32 17 13.6           ~ 11 0
7 4C 32.02 Rad 00 16 12.251 +32 38 59.32           ~ 9 1
8 NVSS J001630+325956 Rad 00 16 29.705 +33 00 09.27           ~ 6 1
9 9C J0017+3209 QSO 00 17 02.1023469144 +32 09 21.907755252     18.5     ~ 19 1
10 NVSS J001831+310552 Rad 00 18 31.582 +31 05 50.82           ~ 6 1
11 NVSS J002707+324636 Rad 00 27 07.8 +32 46 36           ~ 7 1
12 NVSS J003445+302558 rG 00 34 45.148 +30 25 58.10     19.5     ~ 9 1
13 4C 32.04 rG 00 41 46.620 +32 25 09.61           ~ 25 2
14 NVSS J004239+300600 Rad 00 42 39.751 +30 06 00.06           ~ 5 1
15 4C 30.01 Rad 00 47 06.814 +30 27 46.20     19.4     ~ 10 1
16 4C 30.02 Rad 00 53 49.794 +31 14 48.60           ~ 13 1
17 NVSS J005417+320108 Rad 00 54 17.54 +32 01 07.6     17.1     ~ 7 1
18 NGC 315 LIN 00 57 48.88334410 +30 21 08.8119345 12.80 12.20 11.16 11.26   ~ 869 2
19 NVSS J005806+312113 Rad 00 58 06.216 +31 21 13.17           ~ 8 1
20 6C 005537+312936 QSO 00 58 21.1879322376 +31 45 53.734753296           ~ 7 1
21 4C 31.03 Bla 01 12 50.3328920232 +32 08 17.435303556     18.0 18.1   ~ 140 1
22 NVSS J011253+335105 Rad 01 12 53.898 +33 51 06.39           ~ 6 1
23 4C 29.02 Sy1 01 13 24.2416856760 +29 58 16.025424636     17.00     ~ 89 1
24 4C 32.07 Rad 01 28 00.698 +32 44 28.84           ~ 15 1
25 NVSS J012811+332432 Rad 01 28 11.784 +33 24 33.64           ~ 10 1
26 RX J0141.4+2942 X 01 41 28.0 +29 42 37   19.0       ~ 9 1
27 6C 014940+333547 QSO 01 52 34.5766588080 +33 50 33.159720264   18.5 18.5     ~ 134 1
28 4C 29.04B Rad 01 55 56 +30 07.6           ~ 9 0
29 4C 29.04A Rad 01 55 56.862 +30 16 23.86           ~ 8 1
30 4C 31.06 QSO 01 57 15.3287506728 +31 54 19.021353048     18.9     ~ 42 2
31 4C 31.06B rG 01 57 16.2726263928 +32 14 47.542188624           ~ 29 1
32 4C 33.04 QSO 02 00 46.135 +33 38 14.75     19     ~ 14 1
33 NVSS J020345+304129 rG 02 03 45.35524711 +30 41 29.1068408           ~ 64 1
34 7C 020209.69+315812.00 Bla 02 05 04.92536206 +32 12 30.0954703     17.40 17.40   ~ 246 1
35 4C 32.10 Rad 02 06 56.677 +33 01 27.99   19 19.1     ~ 10 1
36 6C 020438+313741 QSO 02 07 34.98960046 +31 52 06.4637348     19.50     ~ 37 1
37 NVSS J020936+335418 Rad 02 09 36.581 +33 54 19.14           ~ 5 1
38 NVSS J021948+334818 rG 02 19 48.7 +33 48 12           ~ 17 1
39 5C 6.237 QSO 02 20 48.0530998224 +32 41 06.464855220   19.0 19.40     ~ 43 1
40 7C 0223+3408 QSO 02 25 16.8299 +31 18 57.806           ~ 21 1
41 4C 29.07 Rad 02 29 49.569 +29 38 13.54   19       ~ 9 1
42 4C 32.11 Rad 02 30 12.633 +32 19 23.38           ~ 8 1
43 4C 30.44 Rad 23 33 03.573 +30 55 23.43     18     ~ 8 1
44 B2 2330+29 Rad 23 33 04 +29 52.8     17.1     ~ 3 0
45 NVSS J233734+302343 Rad 23 37 34.009 +30 23 43.69           ~ 7 1
46 NVSS J234419+303541 Rad 23 44 19.263 +30 35 41.45           ~ 5 1
47 4C 29.70 rG 23 45 04.1798034984 +29 42 45.016295436   16.0       ~ 23 1
48 NVSS J234834+304541 Rad 23 48 34.270 +30 45 41.00           ~ 8 1
49 NVSS J235024+302956 rG 23 50 24.290 +30 29 53.69     19.2     ~ 12 1
50 4C 30.45 Rad 23 51 05.201 +30 20 00.86       18.84   ~ 11 1
51 4C 32.69 QSO 23 52 21.0241017576 +33 03 59.256355752     19.90     ~ 72 1
52 4C 31.67 Rad 23 58 13.607 +31 30 00.73           ~ 11 1

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