2011A&A...528A.110F

Query : 2011A&A...528A.110F

2011A&A...528A.110F - Astronomy and Astrophysics, volume 528A110-110 (2011/4-1)

The B3-VLA CSS sample. VIII. New optical identifications from the Sloan Digital Sky Survey The ultraviolet-optical spectral energy distribution of the young radio sources.

FANTI C., FANTI R., ZANICHELLI A., DALLACASA D. and STANGHELLINI C.

Abstract (from CDS):

Compact steep-spectrum radio sources and giga-hertz peaked spectrum radio sources (CSS/GPS) are generally considered to be mostly young radio sources. In recent years we studied at many wavelengths a sample of these objects selected from the B3-VLA catalog: the B3-VLA CSS sample. Only ≃60% of the sources were optically identified. We aim to increase the number of optical identifications and study the properties of the host galaxies of young radio sources. We cross-correlated the CSS B3-VLA sample with the Sloan Digital Sky Survey (SDSS), DR7, and complemented the SDSS photometry with available GALEX (DR 4/5 and 6) and near-IR data from UKIRT and 2MASS. We obtained new identifications and photometric redshifts for eight faint galaxies and for one quasar and two quasar candidates. Overall we have 27 galaxies with SDSS photometry in five bands, for which we derived the ultraviolet-optical spectral energy distribution (UV-O-SED). We extended our investigation to additional CSS/GPS selected from the literature. Most of the galaxies show an excess of ultra-violet (UV) radiation compared with the UV-O-SED of local radio-quiet ellipticals. We found a strong dependence of the UV excess on redshift and analyzed it assuming that it is generated either from the nucleus (hidden quasar) or from a young stellar population (YSP). We also compare the UV-O-SEDs of our CSS/GPS sources with those of a selection of large size (LSO) powerful radio sources from the literature. If the major process of the UV excess is caused by a YSP, our conclusion is that it is the result of the merger process that also triggered the onset of the radio source with some time delay. We do not see evidence for a major contribution from a YSP triggered by the radio sources itself.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: starburst - galaxies: evolution - galaxies: photometry - galaxies: interactions - ultraviolet: galaxies

Simbad objects: 124

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Number of rows : 124
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 7C 070105.09+391554.00 QSO 07 04 31.3272603648 +39 11 23.360779860   18.7 18.7     ~ 23 1
2 NVSS J070648+464756 rG 07 06 48.0722 +46 47 56.187   23.1       ~ 39 1
3 4C 39.17 AG? 07 25 50.0103 +39 17 25.563   19.1       ~ 28 1
4 NVSS J073243+433540 Rad 07 32 43.6916 +43 35 40.052           ~ 10 1
5 3C 186 QSO 07 44 17.4720658920 +37 53 17.250697320   17.5 18.14 17.2   ~ 339 1
6 4C 46.16 QSO 07 47 43.5236 +46 18 57.384           ~ 34 1
7 NVSS J075219+411551 Rad 07 52 19.8793 +41 15 53.201           ~ 12 1
8 4C 39.21 rG 07 58 08.8521 +39 29 27.705           ~ 27 1
9 3C 190 QSO 08 01 33.5525166480 +14 14 42.813906612   21.07 20.26 18.972   ~ 249 2
10 4C 47.27 Sy1 08 04 13.8817034712 +47 04 42.876898140   20.64 20.34     ~ 52 2
11 2XMM J080535.0+240951 Sy2 08 05 35.0054956728 +24 09 50.330022516   15.46       ~ 336 1
12 4C 40.19 QSO 08 09 03.1418582400 +40 32 56.175467388   21.0       ~ 22 1
13 4C 40.20 Sy2 08 12 53.1122362128 +40 18 59.880992436   21.23 20.31     ~ 70 1
14 4C 46.17 rG 08 14 30.2674 +45 56 39.426   19.3       ~ 28 1
15 NVSS J081735+435934 rG 08 17 35.4877 +43 59 34.449           ~ 14 1
16 4C 39.23B rG 08 25 23.6790 +39 19 45.707   17.0       ~ 46 1
17 3C 200 rG 08 27 25.38019 +29 18 44.9601   20       ~ 178 1
18 ICRF J084331.6+421529 G 08 43 31.63747041 +42 15 29.5243582           ~ 38 1
19 4C 40.22 rG 08 59 59.5736 +40 24 35.087           ~ 20 1
20 6C 090206+414045 Q? 09 05 22.1891 +41 28 39.559   19.5       ~ 17 1
21 3C 217 Rad 09 08 50.958 +37 48 18.28   22       ~ 128 1
22 3C 219 Sy1 09 21 08.6258123424 +45 38 57.358202856   19.56 18.69     ~ 424 2
23 NVSS J093306+384150 rG 09 33 06.9294 +38 41 48.173           ~ 32 1
24 4C 42.30 rG 09 38 16.537 +42 38 34.89           ~ 17 1
25 3C 223.0 Sy2 09 39 52.7594046216 +35 53 58.922078496   19.51 18.60     ~ 279 0
26 4C 36.16 Rad 09 39 55.08 +35 52 13.4           ~ 271 1
27 3C 225 rG 09 42 15.38702 +13 45 50.4653   19 20.0     ~ 147 2
28 3C 226.0 Sy1 09 44 16.51944 +09 46 16.9068   19.5       ~ 131 2
29 3C 228 QSO 09 50 10.793 +14 20 00.70   21       ~ 180 2
30 6C 095107+421525 QSO 09 54 12.5744244120 +42 01 09.187351572   21.51 21.00     ~ 29 1
31 NVSS J095844+384821 rG 09 58 44.269 +38 48 21.72           ~ 16 1
32 7C 095855.9+290131 Sy2 10 01 49.5227371368 +28 47 08.943487440   18.21 17.27     ~ 447 1
33 3C 236.0 BLL 10 06 01.75023017 +34 54 10.4016113   15.97       ~ 473 2
34 3C 237.0 rG 10 08 00.0529 +07 30 16.830   21       ~ 197 1
35 6C 100723+421413 G 10 10 24.7808 +41 59 33.022           ~ 14 1
36 3C 239 rG 10 11 45.639 +46 28 20.45   22.5       ~ 158 1
37 NVSS J101154+420433 Rad 10 11 54.1742 +42 04 33.301           ~ 13 1
38 NVSS J101412+361727 rG 10 14 12.898 +36 17 25.18   21.5       ~ 32 1
39 7C 101416.50+391624.00 QSO 10 17 14.10808 +39 01 23.8294   22.83 20.64     ~ 58 1
40 51P 126 QSO 10 19 48.1843 +44 08 24.845           ~ 14 1
41 4C 37.27A rG 10 20 39.7 +36 56 59           ~ 38 1
42 3C 241 rG 10 21 54.533 +21 59 30.50   23.5       ~ 171 1
43 4C 39.31 rG 10 22 55.244 +39 08 49.00   22.7       ~ 44 1
44 4C 39.32 AGN 10 28 44.2728990384 +38 44 36.859285032 22.66 18.4 18.27     ~ 51 1
45 NVSS J103016+385754 rG 10 30 16.5664 +38 57 53.823           ~ 14 1
46 3C 244.1 QSO 10 33 33.9860997312 +58 14 35.611906344   19.0 19.0     ~ 191 1
47 NVSS J104206+421032 Rad 10 42 06.2105 +42 10 30.535           ~ 15 1
48 NVSS J104733+450852 rG 10 47 33.7345 +45 08 52.523           ~ 18 1
49 7C 1049+3827 Sy2 10 52 11.7875 +38 11 43.913   20.9 20.9     ~ 37 1
50 6C 105511+402617 Q? 10 58 00.4065 +40 10 18.971           ~ 12 1
51 3C 247 QSO 10 58 58.34046 +43 01 21.1619   21.5       ~ 160 1
52 ICRF J111120.0+195536 Sy2 11 11 20.06563417 +19 55 35.9999974   18.5 18.5     ~ 62 1
53 3C 252.0 rG 11 11 31.960 +35 40 44.64   22       ~ 127 1
54 ICRF J112027.8+142054 Sy2 11 20 27.80814059 +14 20 54.9730732   20 20.935 20.100   ~ 175 1
55 6C 112856+453123 QSO 11 31 38.88881 +45 14 51.2180 22.91 20.0 19.54     ~ 33 1
56 4C 37.31 rG 11 32 35.913 +36 54 12.30   23       ~ 40 1
57 NVSS J113555+425844 rG 11 35 55.9948 +42 58 44.648           ~ 33 1
58 4C 42.33 rG 11 38 59.1566 +41 48 39.243           ~ 16 1
59 NVSS J113934+380342 Rad 11 39 34.0053 +38 03 41.881           ~ 11 1
60 3C 263.1 QSO 11 43 25.083 +22 06 56.08   20       ~ 148 1
61 4C 46.23 QSO 11 43 39.600 +46 21 20.44   14.9       ~ 64 0
62 3C 265.0 Sy1 11 45 28.95577 +31 33 47.2434   20.0       ~ 250 1
63 3C 266 rG 11 45 43.384 +49 46 07.90   22       ~ 150 1
64 4C 45.22 rG 11 46 15.2347 +45 20 38.263           ~ 17 1
65 3C 267 rG 11 49 56.526 +12 47 18.95   22.5       ~ 158 2
66 4C 31.38 Sy2 11 56 18.7420683840 +31 28 04.676598588   19.33 18.96     ~ 141 1
67 4C 46.25 rG 12 00 31.1534 +45 48 42.610           ~ 21 1
68 NVSS J120149+391911 rG 12 01 49.9663 +39 19 11.038           ~ 23 1
69 ICRF J120321.9+041419 Sy1 12 03 21.9376393920 +04 14 19.081466664   19.22 18.89     ~ 75 1
70 NVSS J120406+391218 rG 12 04 06.8559 +39 12 17.655 24.57 19.5 19.68     ~ 36 1
71 3C 268.3 Sy2 12 06 24.70656 +64 13 36.8760 22.74 21.847 20.790 19.910   ~ 196 1
72 4C 40.30 rG 12 07 06.2639 +39 54 39.369           ~ 20 1
73 NVSS J121456+374850 rG 12 14 56.696 +37 48 50.98   23       ~ 28 1
74 NVSS J121836+400045 rG 12 18 36.956 +40 00 45.67           ~ 13 1
75 NVSS J121953+422951 Rad 12 19 53.8035 +42 29 52.014           ~ 11 1
76 4C 36.20 rG 12 20 09.818 +36 29 06.71   22.3       ~ 35 1
77 4C 40.31 rG 12 22 35.3017 +40 36 19.833           ~ 18 1
78 3C 272 rG 12 24 28.522 +42 06 36.32   22       ~ 65 1
79 7C 122515.59+441716.00 Sy2 12 27 41.9944552429 +44 00 41.926757263           ~ 22 1
80 6C 122535+365318 QSO 12 27 58.72552577 +36 35 11.8265176   21.5 21.5     ~ 139 1
81 3C 274.1 rG 12 35 22.97 +21 20 18.3   20       ~ 144 0
82 NVSS J123535+413707 rG 12 35 35.7115 +41 37 07.054           ~ 23 1
83 6C 124156+410806 BLL 12 44 19.9682592720 +40 51 36.652030020     19.43     ~ 40 1
84 ICRF J124449.1+404806 Sy1 12 44 49.1889 +40 48 06.150   19.0 19.0     ~ 87 1
85 2E 2879 Sy1 12 52 26.3561235816 +56 34 19.573734864   18.42 18.11 17.660   ~ 293 2
86 3C 277.2 Sy1 12 53 32.425 +15 42 25.29   21.5       ~ 152 1
87 3C 277.3 BLL 12 54 12.0071453880 +27 37 33.952663740   15.94       ~ 379 1
88 7C 125441.29+473632.00 SyG 12 56 57.485 +47 20 20.23   22.0       ~ 285 1
89 NVSS J125929+361704 rG 12 59 30.00936 +36 17 02.6304           ~ 29 1
90 2MASX J13110466+2728070 Sy2 13 11 04.6615315248 +27 28 07.229535420   18.93 18.00     ~ 200 1
91 4C 45.27 rG 13 16 11.9038 +45 04 28.631           ~ 14 1
92 6C 131905+425044 Sy2 13 21 17.813 +42 35 15.38   16.86 16.23     ~ 282 1
93 4C 32.44 QSO 13 26 16.5142 +31 54 09.522   21.367 19.822 18.882   ~ 181 1
94 7C 132816.2+252436 QSO 13 30 37.6960744824 +25 09 10.983105972   18.31 17.67     ~ 373 1
95 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
96 6C 134059+435829 Q? 13 43 05.9232 +43 43 23.318           ~ 13 1
97 3C 289 QSO 13 45 26.699 +49 46 31.39   23       ~ 161 1
98 4C 38.37 QSO 13 45 36.9420854112 +38 23 12.500014308     18.5     ~ 97 1
99 [HB91] 1349+647 rG 13 50 41.84067 +64 29 35.7682     20.70 21.1   ~ 87 1
100 4C 43.31 rG 13 52 28.5862 +42 59 24.055           ~ 25 1
101 ICRF J140028.6+621038 Sy2 14 00 28.64823540 +62 10 38.5885744   22.137 20.373 19.530   ~ 187 1
102 Mrk 668 BLL 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 826 3
103 3C 295 Sy1 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 1021 4
104 3C 298.0 Bla 14 19 08.1802187928 +06 28 34.802854680   17.12 16.79     ~ 422 1
105 3C 299 rG 14 21 05.6960 +41 44 49.260   20.496 19.330 18.560   ~ 187 1
106 3C 300 Sy2 14 22 59.85648 +19 35 36.7152   19.66 18.73     ~ 206 2
107 NVSS J143427+423620 rG 14 34 27.8639 +42 36 20.058           ~ 18 1
108 NVSS J144259+404429 rG 14 42 59.355 +40 44 28.72           ~ 17 1
109 ICRF J144302.7+520137 Sy1 14 43 02.76069031 +52 01 37.2985156   18.96 18.29     ~ 316 3
110 QSO B1445+101 Bla 14 45 16.46525080 +09 58 36.0727447   18.58 17.78     ~ 408 2
111 NVSS J144712+404745 rG 14 47 12.7625124264 +40 47 44.987437896           ~ 28 1
112 4C 41.29 Rad 14 51 07.2856 +41 54 41.806           ~ 17 1
113 NVSS J150029+430951 rG 15 00 29.990 +43 09 51.54           ~ 15 1
114 9C J1503+4528 rG 15 03 +45.5           ~ 8 0
115 QSO B1509+054 Bla 15 11 41.26637844 +05 18 09.2590927   18.49 17.80 13.95   ~ 122 0
116 3C 318.0 QSO 15 20 05.4773966208 +20 16 05.471959692   21.93 20.9     ~ 197 1
117 3C 319.0 rG 15 24 05.499 +54 28 14.64   18.5       ~ 154 1
118 3C 321 Sy1 15 31 43.46520 +24 04 18.9948   16.0   15.40   ~ 341 1
119 3C 322 rG 15 35 01.197 +55 36 48.83   23       ~ 126 1
120 ICRF J154609.5+002624 Bla 15 46 09.53146317 +00 26 24.6145149   19.730 18.900 19.5   ~ 91 1
121 3C 324.0 Sy1 15 49 49.170 +21 25 39.50   21.5       ~ 312 1
122 7C 154914.09+625020.00 QSO 15 49 59.206 +62 41 18.31   21.92 20.70     ~ 147 2
123 3C 326 Rad 15 52 24.9 +20 05 57   17.87 17.08     ~ 226 3
124 ICRF J160913.3+264129 Sy2 16 09 13.3196 +26 41 29.042   19       ~ 249 1

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