1998A&AS..131..435S

Query : 1998A&AS..131..435S

1998A&AS..131..435S - Astron. Astrophys., Suppl. Ser., 131, 435-449 (1998/September-0)

A new sample of faint Gigahertz Peaked Spectrum radio sources.

SNELLEN I.A.G., SCHILIZZI R.T., DE BRUYN A.G., MILEY G.K., RENGELINK R.B., ROETTGERING H.J. and BREMER M.N.

Abstract (from CDS):

The Westerbork Northern Sky Survey (WENSS) has been used to select a sample of Gigahertz Peaked Spectrum (GPS) radio sources at flux densities one to two orders of magnitude lower than bright GPS sources investigated in earlier studies. Sources with inverted spectra at frequencies above 325MHz have been observed with the WSRT at 1.4 and 5GHz and with the VLA at 8.6 and 15GHz to select genuine GPS sources. This has resulted in a sample of 47 GPS sources with peak frequencies ranging from ∼500MHz to >15GHz, and peak flux densities ranging from ∼40 to ∼900mJy. Counts of GPS sources in our sample as a function of flux density have been compared with counts of large scale sources from WENSS scaled to 2GHz, the typical peak frequency of our GPS sources. The counts can be made similar if the number of large scale sources at 2GHz is divided by 250, and their flux densities increase by a factor of 10. On the scenario that all GPS sources evolve into large scale radio sources, these results show that the lifetime of a typical GPS source is ∼250 times shorter than a typical large scale radio source, and that the source luminosity must decrease by a factor of ∼10 in evolving from GPS to large scale radio source. However, we note that the redshift distributions of GPS and large scale radio sources are different and that this hampers a direct and straightforward interpretation of the source counts. Further modeling of radio source evolution combined with cosmological evolution of the radio luminosity function for large sources is required.

Abstract Copyright: ∼

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

Nomenclature: Table 1: [SSD98] BHHMM+DDMM N=117

Simbad objects: 116

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Number of rows : 116
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 J040424+605041 Rad 04 04 24.76 +60 50 42.1           ~ 3 1
2 NVSS J040734+645053 Rad 04 07 34.8792 +64 50 53.040           ~ 5 1
3 WN B0406+7413 Rad 04 12 41.60 +74 21 06.4           ~ 1 0
4 NVSS J042350+673105 Rad 04 23 50.8436 +67 31 05.034           ~ 5 1
5 NVSS J044046+615758 Rad 04 40 46.88 +61 57 58.6           ~ 8 0
6 WN B0441+5757 Rad 04 46 08.74 +58 02 47.8           ~ 3 0
7 ICRF J050145.7+712833 Bz? 05 01 45.77988564 +71 28 33.9635737       21.26   ~ 20 1
8 NVSS J051225+684421 Rad 05 12 25.5002361744 +68 44 22.411526460           ~ 5 1
9 NVSS J051928+713303 Rad 05 19 28.88191393 +71 33 03.7256925           ~ 11 1
10 NVSS J051954+613204 Rad 05 19 54.3141397152 +61 32 03.355976220           ~ 5 1
11 NVSS J052311+600745 rG 05 23 11.00800550 +60 07 45.7158842           ~ 16 1
12 NVSS J053630+612324 Rad 05 36 30.7716687696 +61 23 23.453866752           ~ 8 1
13 1RXS J054030.8+582339 BLL 05 40 30.0094967101 +58 23 38.459367179       16.065   ~ 51 1
14 NVSS J054113+674523 Rad 05 41 13.39705794 +67 45 23.2743013           ~ 18 1
15 [VV2000] J054210.0+644633 QSO 05 42 10.0251297768 +64 46 32.308992696     19.50     ~ 7 0
16 NVSS J054431+713241 rG 05 44 31.4327069849 +71 32 41.349865886           ~ 9 1
17 NVSS J054433+620120 Rad 05 44 33.5676 +62 01 19.788           ~ 9 1
18 WN B0543+6523 Rad 05 47 39.70 +65 24 29.4           ~ 3 0
19 [VV2000] J054827.0+584756 QSO 05 48 26.9657823024 +58 47 55.838614992     19.40     ~ 10 1
20 WN B0542+7358 Rad 05 49 17.01 +73 59 33.3           ~ 1 0
21 WN B0552+6017 Rad 05 57 05.87 +60 17 52.6           ~ 4 0
22 WN B0556+6622 Rad 06 01 19.52 +66 23 03.0           ~ 1 0
23 NVSS J060149+571720 Rad 06 01 49.4845 +57 17 21.175           ~ 7 1
24 [VV2000] J060542.2+575317 QSO 06 05 42.22751560 +57 53 16.3562214     19.80     ~ 22 0
25 WN B0601+7242 Rad 06 08 06.15 +72 42 32.5           ~ 1 0
26 NVSS J061109+721816 Rad 06 11 09.1760368752 +72 18 15.651281664           ~ 7 1
27 QSO B0607+710 BLL 06 13 43.3821991056 +71 07 26.779488276   19.6 19.61 19.1   ~ 82 0
28 NVSS J061354+733505 Rad 06 13 54.1764 +73 35 05.997           ~ 5 1
29 NVSS J061527+725857 Rad 06 15 26.6650925943 +72 58 56.710908868           ~ 5 1
30 WN B0738+7043 Rad 07 44 03.61 +70 36 00.4           ~ 2 0
31 GALEX J074710.1+720538 Rad 07 47 10.4610703512 +72 05 37.951106640   18.8   19.0   ~ 3 0
32 NVSS J075300+633547 Rad 07 53 00.6371192496 +63 35 46.224873168           ~ 8 1
33 ICRF J075654.6+634759 Bz? 07 56 54.6107 +63 47 59.022       22.45   ~ 27 1
34 [VV2000] J075952.9+634613 QSO 07 59 52.8622157040 +63 46 13.570634928     19.10     ~ 7 0
35 NVSS J080136+663910 rG 08 01 36.3772165873 +66 39 09.906401900           ~ 8 1
36 [VV2000] J080224.6+592135 QSO 08 02 24.5938 +59 21 34.807     20.50     ~ 26 1
37 GB6 B0759+6558 Rad 08 03 55.4336 +65 49 19.085           ~ 7 1
38 8C 0802+733 Bla 08 08 16.49154497 +73 15 11.9897583       20.30   ~ 36 1
39 NVSS J081241+650911 BLL 08 12 40.8470727576 +65 09 11.085650244           ~ 40 1
40 7C 081008.69+644025.00 BLL 08 14 39.1902610224 +64 31 22.026175032       16.81   ~ 90 1
41 NVSS J082625+735305 Rad 08 26 25.6500788280 +73 53 06.409180176           ~ 6 1
42 WN B0824+6446 Rad 08 28 58.64 +64 36 28.7           ~ 1 0
43 WN B0827+6231 Rad 08 31 18.95 +62 21 38.7           ~ 1 0
44 [VV2000] J083157.8+703536 QSO 08 31 57.7597 +70 35 36.264     19.70     ~ 14 1
45 WN B0828+5756 Rad 08 32 31.40 +57 45 53.7           ~ 1 0
46 87GB 083013.0+581348 Bla 08 34 11.1012882048 +58 03 21.404149128           ~ 27 1
47 NVSS J083415+725642 Rad 08 34 15.5889095448 +72 56 43.559809368   18.7   18.3   ~ 8 1
48 NVSS J083454+624948 Rad 08 34 54.31 +62 49 48.4           ~ 2 0
49 ICRF J083547.6+683511 Bla 08 35 47.60878952 +68 35 11.4903343       18.64   ~ 25 1
50 NVSS J152546+675123 Rad 15 25 46.0716 +67 51 23.835           ~ 11 1
51 NVSS J152943+673148 Rad 15 29 43.1772 +67 31 47.144           ~ 6 1
52 GB6 B1529+6829 Rad 15 30 05.0 +68 18 59           ~ 1 0
53 NVSS J153746+615313 rG 15 37 46.41705 +61 53 12.4505           ~ 5 1
54 [VV2000] J153929.6+591101 QSO 15 39 29.5141 +59 11 00.732     20.90     ~ 17 1
55 NVSS J154023+614627 rG 15 40 23.8186924008 +61 46 27.125498604           ~ 6 1
56 QSO B1542+614 BLL 15 42 56.9436243096 +61 29 55.346749080   16.9 16.25 16.6   ~ 159 1
57 87GB 154253.7+663132 QSO 15 43 21.2966855592 +66 21 54.749258640           ~ 8 1
58 7C 155054.79+581551.00 Bla 15 51 58.2078070152 +58 06 44.454684204   17.03 16.73 15.60   ~ 76 1
59 NVSS J155204+681348 rG 15 52 04.61695 +68 13 48.2245           ~ 7 0
60 87GB 155706.7+622019 AG? 15 57 52.8217 +62 11 37.434           ~ 9 0
61 NVSS J160009+570657 Rad 16 00 09.22 +57 06 57.2           ~ 2 0
62 NVSS J160037+712322 Rad 16 00 37.96 +71 23 22.8           ~ 6 0
63 NVSS J160112+570600 Rad 16 01 12.5854 +57 06 00.571           ~ 5 1
64 NVSS J160550+593144 Rad 16 05 50.2030 +59 31 43.368           ~ 6 1
65 WN B1607+6026 Rad 16 08 20.38 +60 18 44.0           ~ 1 0
66 NVSS J160914+653229 rG 16 09 13.93704 +65 32 27.9024     19.4     ~ 215 0
67 NVSS J161654+642050 Rad 16 16 54.6286 +64 20 51.260           ~ 4 1
68 NVSS J162115+635911 Rad 16 21 15.35 +63 59 11.7           ~ 6 0
69 NVSS J162236+662331 rG 16 22 35.7207329068 +66 23 36.724826755           ~ 11 0
70 NVSS J162331+685257 Rad 16 23 31.19 +68 52 55.7           ~ 2 1
71 NVSS J162422+661517 Rad 16 24 21.89 +66 15 20.1           ~ 2 0
72 NVSS J163327+650042 Rad 16 33 27.7561791912 +65 00 42.408306468           ~ 8 1
73 NVSS J163915+670601 Rad 16 39 15.69 +67 06 01.7           ~ 5 0
74 [VV2000] J164222.0+665550 QSO 16 42 21.9267404592 +66 55 49.489560192     17.30     ~ 21 1
75 NVSS J164538+673241 Rad 16 45 38.28 +67 32 41.0           ~ 3 0
76 GB6 B1647+6226 rG 16 48 03.7 +62 20 40           ~ 9 0
77 NVSS J165538+644142 Rad 16 55 38.87 +64 41 43.0           ~ 6 0
78 NVSS J165805+582202 Rad 16 58 05.02693 +58 22 02.6247           ~ 6 0
79 NVSS J171218+602818 rG 17 12 18.32055 +60 28 17.0533           ~ 4 0
80 NVSS J171247+672345 Rad 17 12 47.2714 +67 23 45.256           ~ 6 1
81 WN B1714+5819 Rad 17 15 43.2 +58 15 56           ~ 1 0
82 NVSS J171857+602110 Rad 17 18 56.928 +60 21 11.51           ~ 7 0
83 [VV2006] J173052.7+602517 BLL 17 30 52.7128612584 +60 25 16.728022236   18.16 17.94     ~ 45 1
84 [VV2000] J174630.1+692035 QSO 17 46 30.0290435640 +69 20 35.547329508     19.50     ~ 16 1
85 NVSS J174908+691855 Rad 17 49 08.69 +69 18 55.1           ~ 6 1
86 NVSS J175521+690528 Rad 17 55 21.4369776600 +69 05 29.052981852           ~ 6 1
87 NVSS J180714+674253 Rad 18 07 14.50 +67 42 53.4           ~ 6 0
88 GB6 B1807+5959 Rad 18 07 59.4 +59 59 45           ~ 5 0
89 WN B1808+6813 rG 18 08 12.02 +68 14 12.5           ~ 5 0
90 NVSS J181837+644638 Rad 18 18 37.23 +64 46 38.0           ~ 2 0
91 NVSS J181914+625118 Rad 18 19 14.49 +62 51 19.8           ~ 3 1
92 NVSS J181944+670847 rG 18 19 44.4292 +67 08 47.179           ~ 22 1
93 NVSS J182143+625326 Rad 18 21 43.9948 +62 53 26.703           ~ 5 1
94 7C 182754.79+643218.00 QSO 18 28 09.8562415824 +64 34 16.042689516           ~ 19 1
95 WN B1829+6419 Rad 18 29 32.3 +64 21 34           ~ 1 0
96 WN B1834+6319 Rad 18 35 11.1 +63 22 26           ~ 1 0
97 WN B1838+6239 Rad 18 38 38.23 +62 42 43.5           ~ 1 0
98 GB6 B1841+6715 rG 18 41 03.9244 +67 18 49.999           ~ 12 1
99 WN B1841+6343 Rad 18 41 38.74 +63 46 56.7           ~ 1 0
100 NVSS J184330+630851 Rad 18 43 30.4820 +63 08 51.065           ~ 7 1
101 NVSS J185042+645110 Rad 18 50 42.80 +64 51 10.9           ~ 2 0
102 WN B1916+6817 Rad 19 16 33.0 +68 23 13           ~ 1 0
103 WN B1919+6912 Rad 19 19 47.3 +69 18 11           ~ 1 0
104 6C 192647+611105 BLL 19 27 30.4428785736 +61 17 32.878880988   17.5 17.5 16.99   ~ 139 1
105 NVSS J193415+711752 Rad 19 34 15.4024891392 +71 17 51.835162776           ~ 5 1
106 NVSS J193945+583151 Rad 19 39 45.5267080210 +58 31 50.554696032           ~ 4 1
107 ICRF J194126.9+722142 Bla 19 41 26.98469095 +72 21 42.2235118           ~ 53 1
108 NVSS J194510+601504 Rad 19 45 10.39 +60 15 04.8           ~ 2 0
109 QSO B1946+708 BLL 19 45 53.51966298 +70 55 48.7285673   18.726 16.70 17.199   ~ 147 2
110 [VV2000] J194613.0+603139 QSO 19 46 13.0629288384 +60 31 38.911050552     20.40     ~ 12 1
111 NVSS J195131+692255 Rad 19 51 31.4276959805 +69 22 54.879658380           ~ 6 1
112 NVSS J195209+650145 Rad 19 52 10.0193237040 +65 01 46.174536120           ~ 8 1
113 87GB 195412.4+614554 Bz? 19 54 55.98969700 +61 53 58.2974315       23.35   ~ 21 1
114 [VV2000] J195930.2+620645 QSO 19 59 30.1308792768 +62 06 44.723199708     19.10     ~ 13 2
115 NVSS J200750+592532 rG 20 07 50.1284491768 +59 25 31.985186387           ~ 5 1
116 BWE 2011+7156 QSO 20 11 03.8210890656 +72 05 12.173472888           ~ 9 1

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