2000A&A...362...27J

Query : 2000A&A...362...27J

2000A&A...362...27J - Astronomy and Astrophysics, volume 36227-41 (2000/10-1)

Small-scale structures in compact steep-spectrum and GHz-peaked-spectrum radio sources.

JEYAKUMAR S., SAIKIA D.J., RAO A.J. and BALASUBRAMANIAN V.

Abstract (from CDS):

We determine the small-scale structure for a large sample of Compact Steep Spectrum (CSS) and Gigahertz Peaked Spectrum (GPS) sources and a sample of larger radio sources at 327 MHz using the technique of Inter-Planetary Scintillation (IPS) with the Ooty Radio Telescope. Our observations provide structural information on angular scales ranging from about 50 to a few hundred milliarcsec. We estimate the size and flux density of the scintillating components from the IPS observations. The fraction of flux density of the hotspots estimated from both the IPS observations as well as from interferometric observations for larger sources from the literature exhibits no significant dependence on either the radio luminosity or linear size for the high-luminosity sources. We examine the collimation of radio jets using the sizes of hotspots from both IPS and interferometric observations. The hotspot sizes do not exhibit a significant dependence on the overall linear size for the larger sources, although the CSS and GPS sources were earlier found to evolve in a self-similar way. The IPS observations show evidence of larger-scale structures compared to the known VLBI-scale structures in 8 CSS and GPS radio sources. We discuss the origin of these structures. We also examine the spectra of compact components in GPS sources using both IPS and interferometric measurements, and attempt to distinguish between different processes for explaining their low-frequency spectra.

Abstract Copyright: ∼

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

Simbad objects: 117

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Number of rows : 117
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 ICRF J002225.4+001456 Sy2 00 22 25.42584644 +00 14 56.1630395   21.1       ~ 125 1
2 QSO B0023-263 BLL 00 25 49.15629900 -26 02 12.6141092   20.30 19.5 18.084   ~ 173 1
3 ICRF J002914.2+345632 Sy2 00 29 14.24247204 +34 56 32.2470345   20.2       ~ 145 1
4 4C -02.04 Bla 00 40 57.6113680704 -01 46 32.027603772   18.5 18.00 18.38   ~ 108 1
5 QSO B0039+230 Bla 00 42 04.54516583 +23 20 01.0619642       19.40   ~ 127 1
6 4C -05.03 QSO 00 46 44.5183443504 -05 22 00.484349880     19.0     ~ 24 1
7 4C 17.09 QSO 01 11 49.8456722808 +17 53 51.069035508     18.0     ~ 72 1
8 PKS 0114-21 rG 01 16 51.40488104 -20 52 06.8906316     16.5     ~ 91 1
9 ICRF J011818.4+025805 Sy1 01 18 18.4816422984 +02 58 05.790609192     17.5     ~ 142 1
10 4C 23.04 Rad 01 23 54.20770 +24 18 23.5550           ~ 14 1
11 3C 43 QSO 01 29 59.7696120312 +23 38 20.041393524           ~ 203 1
12 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
13 3C 49 rG 01 41 09.161 +13 53 28.07   22.327 20.920 20.876   ~ 189 1
14 PKS 0144+209 Rad 01 46 58.78375705 +21 10 24.3843485           ~ 27 1
15 3C 55.0 rG 01 57 10.730 +28 51 39.85   20.8       ~ 156 1
16 QSO B0201+113 Bla 02 03 46.65705710 +11 34 45.4094619   19.5 19.5 19.41   ~ 216 1
17 6C 021803+354230 BLL 02 21 05.4920852208 +35 56 13.848581904   20.0 20.0 19.60   ~ 603 3
18 7C 022118.10+273638.00 Sy1 02 24 12.2865158736 +27 50 11.538285648   19.502 18 18.263   ~ 210 1
19 4C -00.12 QSO 02 25 07.9319769264 -00 35 32.987872212   19.98 19.36     ~ 85 1
20 4C 34.07 QSO 02 26 10.33325265 +34 21 30.2874853   21.3       ~ 99 1
21 4C -04.06 QSO 02 35 07.3418452008 -04 02 05.317096956   16.61 16.46 16.2   ~ 222 1
22 QSO B0319+12 QSO 03 21 53.10350560 +12 21 13.9537765   19 19     ~ 137 1
23 4C 05.14 rG 03 23 20.2607119272 +05 34 11.891999568     19     ~ 82 1
24 3C 93.1 BLL 03 48 46.9073426592 +33 53 15.461439576   20.723   19.110   ~ 133 1
25 2MASSI J0352305-071102 Sy1 03 52 30.5518280976 -07 11 02.326141644   17.02 16.67     ~ 163 1
26 3C 99.0 Sy2 04 01 07.6007854294 +00 36 32.480076280   20.200 19.010 18.532   ~ 108 1
27 QSO B0400+258 Bla 04 03 05.58608082 +26 00 01.5027775     18 19.00   ~ 220 1
28 3C 105.0 Sy2 04 07 16.4671273272 +03 42 25.813809432   18.5       ~ 241 0
29 4C 17.25 Rad 04 25 24.470 +17 55 25.50           ~ 15 1
30 PKS 0428+205 rG 04 31 03.76141386 +20 37 34.2648470   22.174   19.085   ~ 198 1
31 4C 09.17 QSO 04 48 21.73843453 +09 50 51.4600564   20.2 19.55     ~ 86 1
32 QSO J0459+0229 QSO 04 59 52.05066296 +02 29 31.1765162   18.2 19     ~ 166 2
33 ICRF J050321.1+020304 Sy2 05 03 21.19716454 +02 03 04.6765714   22.500 21.350 20.682   ~ 196 1
34 ICRF J052109.8+163822 Sy1 05 21 09.88596258 +16 38 22.0515459   19.37 18.84 18.480   ~ 910 1
35 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
36 PKS 0531+19 rG 05 34 44.51221055 +19 27 21.4860450   17.7       ~ 57 1
37 2C 553 QSO 06 27 10.125 -05 53 06.21           ~ 165 1
38 3C 173.0 QSO 07 02 20.56848 +37 57 23.2164   21.64       ~ 57 1
39 6C 071106+354007 Bla 07 14 24.81748958 +35 34 39.7954831     17 17.7   ~ 213 1
40 3C 185 QSO 07 38 33.9038596752 -02 04 23.266324272     17.6     ~ 44 1
41 6C 073759+311929 Bla 07 41 10.70330407 +31 12 00.2291151   17.02 16.89 16.322   ~ 468 1
42 3C 186 QSO 07 44 17.4720658920 +37 53 17.250697320   17.5 18.14 17.2   ~ 339 1
43 4C -06.18 Rad 07 44 21.65636148 -06 29 35.9141444           ~ 56 1
44 QSO B0742+103 Bla 07 45 33.05952486 +10 11 12.6922178     24.00 23.72   ~ 200 1
45 4C -00.28 Bla 07 45 54.08232685 -00 44 17.5399048   18 17.1 16.69   ~ 200 1
46 4C 29.27 QSO 07 54 58.3296649248 +29 41 54.250534284   18.82 18.52     ~ 66 1
47 NVSS J075549+340817 rG 07 55 49.24294 +34 08 00.4960           ~ 9 1
48 3C 190 QSO 08 01 33.5525166480 +14 14 42.813906612   21.07 20.26 18.972   ~ 249 2
49 3C 191 QSO 08 04 47.9671662720 +10 15 23.746977252   18.65 18.40     ~ 295 2
50 4C 13.39 QSO 08 45 47.1953111304 +13 28 58.257755076   18.25 17.80     ~ 94 1
51 LB 8755 QSO 08 50 51.8060927808 +15 22 15.118839444   18.02 17.93     ~ 96 1
52 3C 208 QSO 08 53 08.6093021736 +13 52 54.845406984   17.76 17.42     ~ 257 1
53 3C 210 rG 08 58 10.02632 +27 50 53.8843   22       ~ 104 1
54 3C 212 QSO 08 58 41.44702653 +14 09 44.7622845   19.96 19.06     ~ 257 1
55 7C 085805.20+291331.00 Sy2 09 01 05.2614565176 +29 01 46.939089828   18.84 18.08 18.600   ~ 132 1
56 BWE 0904+0354 Sy2 09 06 41.045 +03 42 42.59           ~ 23 1
57 PKS 0914+114 rG 09 17 16.383 +11 13 36.85           ~ 25 1
58 ICRF J094336.9-081930 LIN 09 43 36.94453828 -08 19 30.8202783   19.401   18.100   ~ 125 2
59 3C 226.0 Sy1 09 44 16.51944 +09 46 16.9068   19.5       ~ 131 2
60 7C 0941+2608 QSO 09 44 42.3172763448 +25 54 43.279928136     18.7 17.50   ~ 81 1
61 3C 237.0 rG 10 08 00.0529 +07 30 16.830   21       ~ 197 1
62 4C 02.30 QSO 10 15 15.6398810616 +01 58 53.226956424   17.75 17.40     ~ 67 1
63 3C 240 QSO 10 17 49.3782939432 +27 32 04.112869776   18.90 18.72     ~ 84 1
64 3C 241 rG 10 21 54.533 +21 59 30.50   23.5       ~ 171 1
65 4C 19.34 Bla 10 24 44.80959654 +19 12 20.4155021   17.95 17.49 16.41   ~ 167 1
66 3C 243 QSO 10 26 31.9619676624 +06 27 33.028507440   19.00 18.62     ~ 122 1
67 PKS 1045+019 Rad 10 48 22.86793321 +01 41 48.1139712           ~ 30 1
68 ICRF J112027.8+142054 Sy2 11 20 27.80814059 +14 20 54.9730732   20 20.935 20.100   ~ 175 1
69 3C 258 rG 11 24 43.69438 +19 19 28.1428   22.082 21.448 20.513   ~ 86 2
70 QSO J1130-1449 Bla 11 30 07.0523452128 -14 49 27.388021944   17.17 16.90 16 16.97 ~ 739 1
71 QSO J1139-1350 Bla 11 39 10.7025556152 -13 50 43.639196064   16.38 16.17 16.4   ~ 284 1
72 QSO B1143-245 Bla 11 46 08.1033450360 -24 47 32.900532360   17.97 18.0 17.20   ~ 129 1
73 QSO B1148-171 Bla 11 51 03.2032064976 -17 23 59.841189888   17.9 19.0 18   ~ 50 1
74 4C 31.38 Sy2 11 56 18.7420683840 +31 28 04.676598588   19.33 18.96     ~ 141 1
75 4C 13.46 Bla 12 13 32.1707286888 +13 07 20.905849740   18.87 18.53 18   ~ 148 1
76 QSO B1221+113 QSO 12 24 19.8147701040 +11 07 23.102165568   19.16 18.96     ~ 71 1
77 QSO B1237-101 Bla 12 39 43.06148047 -10 23 28.6925910   18.08 18.11 17.14   ~ 146 1
78 QSO B1245-197 QSO 12 48 23.89808243 -19 59 18.5899475   21.52 20.5     ~ 145 1
79 4C 14.49 Rad 13 44 23.733 +14 09 15.05   20.0       ~ 18 1
80 PKS 1345+12 Sy2 13 47 33.36161873 +12 17 24.2398927   19.28 18.44 15.718   ~ 652 2
81 QSO B1354-174 Bla 13 57 06.07420758 -17 44 01.9049954   19 19 18   ~ 93 1
82 3C 298.0 Bla 14 19 08.1802187928 +06 28 34.802854680   17.12 16.79     ~ 422 1
83 ICRF J143539.9-041455 Sy1 14 35 39.9099617256 -04 14 55.270986900   18.14   17.38   ~ 33 1
84 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
85 QSO B1456+092 QSO 14 59 23.2091120736 +09 04 08.337415152     18.5     ~ 43 1
86 4C 04.51 rG 15 21 14.41846935 +04 30 21.6366133   18.2       ~ 103 1
87 QSO B1524-136 QSO 15 26 59.44274001 -13 51 00.2643644     20.5     ~ 102 1
88 ICRF J154609.5+002624 Bla 15 46 09.53146317 +00 26 24.6145149   19.730 18.900 19.5   ~ 91 1
89 PKS 1548-302 Rad 15 51 19.1 -30 24 06           ~ 5 0
90 PKS 1601-222 rG 16 04 01.47174802 -22 23 40.9881985   21.0       ~ 40 1
91 PKS 2008-068 rG 20 11 14.21582587 -06 44 03.5555103     17.2     ~ 91 1
92 3C 422 QSO 20 47 10.3663354152 -02 36 22.142894832   20.80 19.50     ~ 92 1
93 PKS 2053-20 rG 20 56 04.2772181688 -19 56 35.394139824   19.0       ~ 56 1
94 PKS 2121-014 rG 21 23 39.12832 -01 12 34.1316           ~ 35 1
95 QSO B2126-185 QSO 21 29 21.41910359 -18 21 22.7903660     20.0     ~ 39 1
96 ICRF J213032.8+050217 AG? 21 30 32.87740078 +05 02 17.4745177     23.4     ~ 164 1
97 QSO B2134+0028 Bla 21 36 38.58632232 +00 41 54.2128562   17.30 17.08 17.02   ~ 580 2
98 QSO J2146-1525 Bla 21 46 22.97932711 -15 25 43.8856539   17.70 17.27 17.20   ~ 148 1
99 QSO B2146-13 QSO 21 49 28.6951024560 -13 04 25.836892248     19.5     ~ 58 1
100 PKS 2147+14 Rad 21 50 23.60748567 +14 49 47.8943983           ~ 52 1
101 QSO B2149+056 Bla 21 51 37.87549026 +05 52 12.9545152   23.700 22.050 20.850   ~ 120 1
102 QSO B2149-306 Bla 21 51 55.52396937 -30 27 53.6980880   17.95 18.0 17.48   ~ 281 1
103 PMN J2155-1139 Rad 21 55 50.71835467 -11 39 47.9783765           ~ 22 1
104 [VV96] J215729.0-180703 QSO 21 57 29.1244244592 -18 07 02.834552064     20.6     ~ 33 1
105 4C 10.67 QSO 22 01 16.6707373176 +10 23 47.660986068     18.7     ~ 37 1
106 ICRF J221237.9+015251 Sy2 22 12 37.97355904 +01 52 51.1910560     21.7     ~ 89 1
107 4C 05.84 BLL 22 25 14.7002359128 +05 27 09.063249840     18.52     ~ 75 1
108 QSO J2225+2118 Bla 22 25 38.0470440264 +21 18 06.414418332     18.19 17.65   ~ 180 1
109 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
110 QSO J2246-1206 Bla 22 46 18.23197022 -12 06 51.2775983   16.63 16.45 15.99   ~ 293 1
111 2MASX J22502534+1419519 Sy1 22 50 25.3475290512 +14 19 52.095751140   17.28 16.97 17.243   ~ 210 1
112 3C 455.0 QSO 22 55 03.8909253126 +13 13 33.940584742   19.535 19.590 19.190   ~ 197 1
113 AT20G J232510-034446 Sy2 23 25 10.258047 -03 44 46.71563           ~ 32 1
114 4C 13.88 Rad 23 40 33.194 +13 33 00.50           ~ 22 1
115 QSO B2345-167 Bla 23 48 02.60851466 -16 31 12.0222546   18.00 18.41 16.86   ~ 432 1
116 4C 06.76 QSO 23 48 31.7707716384 +06 24 59.781458520     17.5     ~ 65 1
117 QSO B2353+154 QSO 23 55 53.5307564448 +15 41 26.040829740   18.29 18.02     ~ 58 1

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