2000A&A...363..887D

Query : 2000A&A...363..887D

2000A&A...363..887D - Astronomy and Astrophysics, volume 363887-900 (2000/11-3)

High frequency peakers. I. The bright sample.

DALLACASA D., STANGHELLINI C., CENTONZA M. and FANTI R.

Abstract (from CDS):

Here we present a sample of sources with convex radio spectra peaking at frequencies above a few GHz. We call these radio sources High Frequency Peakers (HFPs). This sample extends to higher turnover frequencies than the samples of Compact Steep Spectrum (CSS) and GHz Peaked Spectrum (GPS) radio sources. HFPs are rare due to the strong bias against them caused by their turnover occurring at frequencies about one order of magnitude higher than in CSS-GPS samples. The sample has been selected by a comparison between the Green Bank survey (87GB) at 4.9 GHz and the NRAO VLA Sky Survey (NVSS) at 1.4 GHz. Then the candidates have been observed with the VLA at 1.365, 1.665, 4.535, 4.985, 8.085, 8.485, 14.96 and 22.46 GHz in order to derive a simultaneous radio spectrum, and remove variable sources from the sample. The final list of genuine HFP sources consists of 55 objects with flux density exceeding 300 mJy at 4.9 GHz at the time of the 87GB observation. Optical identifications are available for 29 of them; 24 are high redshift quasars, 3 are galaxies (one of them has indeed broad lines in the optical spectrum) and 2 are BL Lac objects. The remaining sources are mostly empty fields (17) on the digitised POSS or have uncertain classification (9).

Abstract Copyright: ∼

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

VizieR on-line data: <Available at CDS (J/A+A/363/887): table1.dat>

Simbad objects: 103

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Number of rows : 103
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 QSO J0003+2129 Bla 00 03 19.35000596 +21 29 44.5083164   21.005 20.580 19.650   ~ 49 1
2 QSO B0002+0507 BLL 00 05 20.2155845040 +05 24 10.802758572   16.56 16.21 16.26   ~ 188 1
3 ICRF J003726.0+110950 QSO 00 37 26.04142524 +11 09 50.9210403       18.10   ~ 25 1
4 ICRF J003732.1+080813 Bz? 00 37 32.19718344 +08 08 13.0569095       22.31   ~ 26 1
5 ICRF J003939.6+141157 BLL 00 39 39.61959821 +14 11 57.5566995       19.82   ~ 30 1
6 ICRF J010747.8+261108 Bla 01 07 47.88628840 +26 11 08.6709297       19.20   ~ 25 1
7 QSO B0108+388 Bla 01 11 37.31680 +39 06 28.1039     22 22.000   ~ 266 1
8 IVS B0113+24A Rad 01 16 33.4575385536 +24 22 15.609264780           ~ 6 0
9 ICRF J013244.1+432532 QSO 01 32 44.12681585 +43 25 32.6609303       19.12   ~ 35 1
10 [VV2006] J020513.1+144432 QSO 02 05 13.11723006 +14 44 32.3862873     21.9     ~ 18 1
11 QSO J0217+0144 Bla 02 17 48.95475095 +01 44 49.6990271   16.74 16.09 18.51 13.29 ~ 455 1
12 [VV96] J025442.6+393134 Bla 02 54 42.6319794672 +39 31 34.711675284     16.30 16.91   ~ 73 2
13 [VV96] J031049.8+381453 BLL 03 10 49.87992240 +38 14 53.8378761     19.70 19.21   ~ 127 1
14 LBQS 0310+0122 Bla 03 12 43.60323268 +01 33 17.5650710     18.5 18.04   ~ 116 1
15 ICRF J031313.4+022835 QSO 03 13 13.40546775 +02 28 35.3066546           ~ 28 1
16 ICRF J032915.3+351005 BLL 03 29 15.3548503584 +35 10 05.989666620       17.60   ~ 51 1
17 QSO J0357+2319 QSO 03 57 21.60989042 +23 19 53.8251826       18.78   ~ 50 1
18 QSO B0422+004 BLL 04 24 46.8421990080 +00 36 06.329375028 16.15 15.94 16.98     ~ 378 1
19 ICRF J042805.8+325952 Bla 04 28 05.80875891 +32 59 52.0442031       21.39   ~ 50 1
20 PMN J0509+0541 BLL 05 09 25.9644373872 +05 41 35.333820420 15.32 14.95 14.78 15.12   ~ 589 2
21 PMN J0519+0848 Rad 05 19 10.81113186 +08 48 56.7346356           ~ 27 1
22 QSO J0530+13 Bla 05 30 56.41674741 +13 31 55.1494688     20.00 19.35   ~ 1004 1
23 6C 055451+580322 Bla 05 59 13.39402230 +58 04 03.4463147     19.00 19.01   ~ 47 1
24 ICRF J062518.2+444001 BLL 06 25 18.26537500 +44 40 01.6261460     16.80 18.71   ~ 112 1
25 6C 063338+593631 Bz? 06 38 02.87192548 +59 33 22.2138567           ~ 41 1
26 QSO B0636+68 BLL 06 42 04.2572705040 +67 58 35.620484340     16.46 16.01   ~ 234 1
27 7C 064253.00+445430.00 Bla 06 46 32.02599653 +44 51 16.5901185   19.57 18.49 18.64   ~ 370 1
28 QSO B0646+600 Bla 06 50 31.25435548 +60 01 44.5549353   18.9 18.6 19.65   ~ 125 1
29 Z 204-27 QSO 06 55 10.02472583 +41 00 10.1602339   14.6   9.37   ~ 71 1
30 [VV98] J072201.2+372229 Bla 07 22 01.2594530208 +37 22 28.634815884     17.91 17.27   ~ 40 1
31 ICRF J073357.4+045614 Bla 07 33 57.45989369 +04 56 14.4965996       19.15   ~ 58 1
32 QSO B0808+019 BLL 08 11 26.70731711 +01 46 52.2201568   17.58 17.2 17.96   ~ 281 1
33 QSO B0829+047 BLL 08 31 48.8770033992 +04 29 39.086842884   17.10 16.4 14.55   ~ 511 2
34 ICRF J085435.0+072024 Sy1 08 54 35.03640502 +07 20 24.1255276   20.62 20.30     ~ 36 1
35 4C 39.25 Bla 09 27 03.01394144 +39 02 20.8518067   17.17 17.00 16.486   ~ 1036 1
36 6C 095456+654857 BLL 09 58 47.2451872176 +65 33 54.819354600     17.0 15.75   ~ 771 1
37 QSO J1016+0513 Bla 10 16 03.13647602 +05 13 02.3413146   20.26 19.83 20   ~ 162 1
38 [VV2006] J101827.8+053029 Bla 10 18 27.84828610 +05 30 29.9620200   19.63 19.33 20.05   ~ 112 1
39 QSO B1030+074 Bla 10 33 34.02429368 +07 11 26.1475933     20.34 20.22   ~ 111 2
40 QSO B1043+066A Bla 10 45 52.7330168808 +06 24 36.451178352   18.24 17.92 17.53   ~ 69 1
41 6C 104451+715930 Bla 10 48 27.61992778 +71 43 35.9384142     19.0 17.49   ~ 270 1
42 6C 105327+702759 Bla 10 56 53.61750640 +70 11 45.9155652   18.5 18.5 19.32   ~ 124 1
43 6C 114419+401458 Bla 11 46 58.29791724 +39 58 34.3043988   18.80 18.45 18.58   ~ 261 1
44 6C 114618+531124 Bla 11 48 56.5690073664 +52 54 25.323857892   17.19 16.87 16.45   ~ 89 1
45 ICRF J120922.7+411941 BLL 12 09 22.7879963712 +41 19 41.371293540   18.42 17.83 16.74   ~ 133 2
46 7C 122619.80+372307.00 Bla 12 28 47.42367714 +37 06 12.0958131   18.74 18.28 17.91   ~ 96 1
47 7C 130046.50+580438.00 Bla 13 02 52.46528286 +57 48 37.6093029   20.47 19.76 20.63   ~ 124 1
48 ICRF J131053.5+465352 Bla 13 10 53.59160137 +46 53 52.2202295       19.77   ~ 47 1
49 7C 130838.79+324935.00 Bla 13 10 59.40273257 +32 33 34.4495500     16.8 19.00   ~ 99 1
50 QSO B1333+459 Bla 13 35 21.9623576640 +45 42 38.232772128   18.30 18.22 17.67   ~ 107 1
51 4C 58.26 Bz? 13 35 25.92853561 +58 44 00.2912887       21.91   ~ 60 1
52 Mrk 668 BLL 14 07 00.39441712 +28 27 14.6901341   16.13 15.35 10.29   ~ 826 3
53 ICRF J141035.0+073121 Bla 14 10 35.07534673 +07 31 21.4891007       20.66   ~ 45 1
54 BWE 1410+1349 Bz? 14 12 36.37265047 +13 34 38.1527962           ~ 30 1
55 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
56 QSO B1422+2309 BLL 14 24 38.0938 +22 56 00.587   16.77 15.84 14.79   ~ 464 1
57 [PBW92] 1422+231 gLS 14 24 38.09400 +22 56 00.5900   16.77 15.84 14.79   ~ 359 0
58 QSO J1430+1043 Bla 14 30 09.73880343 +10 43 26.8623079     18.5 18.67   ~ 96 1
59 ICRF J145738.1+074954 Bla 14 57 38.12869548 +07 49 54.7150624   21.26 20.74 19.37   ~ 47 1
60 ICRF J145844.7+372021 BLL 14 58 44.7945139728 +37 20 21.622681212   20.30 19.81 19.43   ~ 99 1
61 QSO J1505+0326 Bla 15 05 06.47716039 +03 26 30.8125704   19.02 18.62 17.72   ~ 278 1
62 QSO B1509+054 Bla 15 11 41.26637844 +05 18 09.2590927   18.49 17.80 13.95   ~ 122 0
63 QSO J1526+6650 Bla 15 26 42.8744737248 +66 50 54.644414316   18.26 17.87 17.24   ~ 59 1
64 7C 155054.79+581551.00 Bla 15 51 58.2078070152 +58 06 44.454684204   17.03 16.73 15.60   ~ 76 1
65 PG 1553+113 BLL 15 55 43.0440048528 +11 11 24.365649948 14.91 14.72 14.57 13.99   ~ 672 1
66 ICRF J160341.9+110548 BLL 16 03 41.93125418 +11 05 48.6791330   18.41 17.82 16.66   ~ 77 2
67 QSO B1614+051 Bla 16 16 37.55681923 +04 59 32.7365717   19.60 19.17 19.49   ~ 195 2
68 [VV96] J162304.5+662401 Bla 16 23 04.52169655 +66 24 01.0787041   19.477   17.430   ~ 67 1
69 7C 1645+6335 Bla 16 45 58.55268458 +63 30 10.9228284   19.87 19.77 19.5   ~ 80 1
70 7C 1716+6839 Bla 17 16 13.93798667 +68 36 38.7451988   18.99 18.16 17.67   ~ 137 1
71 ICRF J171701.1+191740 QSO 17 17 01.16594708 +19 17 40.6558800           ~ 22 1
72 ICRF J171910.9+065815 QSO 17 19 10.93337360 +06 58 15.7462450           ~ 19 1
73 [VV2006] J172240.0+610559 Bla 17 22 40.05935485 +61 05 59.7873567   19.35 19.07 19.42   ~ 70 1
74 ICRF J172807.0+121539 Bla 17 28 07.05121409 +12 15 39.4855448     20.0 19.47   ~ 94 1
75 NVSS J173549+504911 rG 17 35 49.00517 +50 49 11.5659       22.40   ~ 57 1
76 ICRF J174005.8+221100 QSO 17 40 05.86288354 +22 11 00.9733612       16.75   ~ 25 1
77 7C 174604.90+465932.00 BLL 17 47 26.64727228 +46 58 50.9262456     21.30 19.17   ~ 64 1
78 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
79 7C 175844.60+384828.00 Bla 18 00 24.76536016 +38 48 30.6974570   17.8 17.98 17.04   ~ 161 1
80 ICRF J181143.1+170457 BLL 18 11 43.18346508 +17 04 57.2575194       18.98   ~ 36 1
81 QSO J1840+3900 Bla 18 40 57.15422373 +39 00 45.7240946     19.20 19.14   ~ 58 1
82 NVSS J184915+670640 Rad 18 49 15.89 +67 06 40.9           ~ 1 0
83 QSO B1848+283 Bla 18 50 27.5898721080 +28 25 13.155071160   17.1 17 17.16   ~ 87 1
84 ICRF J185527.7+374256 Bla 18 55 27.70681096 +37 42 56.9655757       20.20   ~ 41 1
85 ICRF J202135.2+051504 QSO 20 21 35.28120633 +05 15 04.7781809       21.70   ~ 40 1
86 [VV96] J202456.5+171814 Bla 20 24 56.5636552128 +17 18 13.196337192   17.5 19.5 17.51   ~ 68 1
87 ICRF J204310.2+125513 Bla 20 43 10.20917899 +12 55 13.5690475       20.20   ~ 27 1
88 QSO B2059+034 Bla 21 01 38.83415344 +03 41 31.3207714   18.13 17.78 17.68   ~ 176 1
89 ICRF J211458.3+283257 Bla 21 14 58.33362526 +28 32 57.1966465   18.6   18.91   ~ 48 1
90 QSO J2123+0535 Bla 21 23 44.51739933 +05 35 22.0930238   18.3 20.40 19.86   ~ 320 1
91 QSO B2134+0028 Bla 21 36 38.58632232 +00 41 54.2128562   17.30 17.08 17.02   ~ 580 2
92 NVSS J220330+100742 rG 22 03 30.95260247 +10 07 42.5863773       21.38   ~ 44 0
93 ICRF J220752.8+165217 Bla 22 07 52.86567746 +16 52 17.8154293   19.5 19.5 19.98   ~ 49 1
94 QSO B2209+236 Bla 22 12 05.96631459 +23 55 40.5438259   19 20.66 19.69   ~ 257 1
95 ICRF J221914.0+180635 Bla 22 19 14.09247625 +18 06 35.5807267       19.91   ~ 92 1
96 ICRF J221949.7+261327 Bla 22 19 49.7415736248 +26 13 27.931550772       17.00   ~ 59 1
97 6C 222905+693121 BLL 22 30 36.46973826 +69 46 28.0769147     19.6 20.11   ~ 105 1
98 ICRF J224107.2+412011 BLL 22 41 07.2051716400 +41 20 11.617123020       18.89   ~ 52 1
99 QSO J2257+0243 Bla 22 57 17.56309534 +02 43 17.5116538   18.04 17.96 18.45   ~ 165 1
100 ICRF J230844.1+094626 QSO 23 08 44.17161020 +09 46 26.1110329           ~ 23 1
101 NVSS J232044+061350 Rad 23 20 44.83 +06 13 50.5           ~ 1 0
102 ICRF J232154.9+320407 Bla 23 21 54.95598750 +32 04 07.6225103     18 20   ~ 115 1
103 QSO B2327+335 Bla 23 30 13.73765966 +33 48 36.4714906     18.5 18.71   ~ 53 1

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