2000AJ....119.2629M

Query : 2000AJ....119.2629M

2000AJ....119.2629M - Astron. J., 119, 2629-2633 (2000/June-0)

Redshifts of CLASS radio sources.

MARLOW D.R., RUSIN D., JACKSON N., WILKINSON P.N., BROWNE I.W.A. and KOOPMANS L.

Abstract (from CDS):

Spectroscopic observations of a sample of 42 flat-spectrum radio sources from the Cosmic Lens All-Sky Survey (CLASS) have yielded a mean redshift of <z>=1.27 with an rms spread of 0.95, at a completeness level of 64%. The sample consists of sources with a 5 GHz flux density of 25-50 mJy, making it the faintest flat-spectrum radio sample for which the redshift distribution has been studied. The spectra, obtained with the William Herschel Telescope, consist mainly of broad-line quasars at z>1 and narrow-line galaxies at z<0.5. Though the mean redshift of flat-spectrum radio sources exhibits little variation over more than 2 orders of magnitude in radio flux density, there is evidence of a decreasing fraction of quasars at weaker flux levels. We present the results of our spectroscopic observations and discuss the implications for constraining cosmological parameters with statistical analyses of CLASS.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Gravitational Lensing

CDS comments: Table 1 : format CLASS too short, cross-id. GB6 found in the GB6 catalogue.

Simbad objects: 47

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Number of rows : 47
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 2MASX J01032879+4322592 BLL 01 03 28.7994602064 +43 22 59.549426724       16.6   ~ 12 1
2 87GB 010219.8+391221 Bla 01 05 09.1962613704 +39 28 15.320001180     19.69 18.2   ~ 58 1
3 GB6 B0103+4406 Rad 01 06 19.9 +44 22 27           ~ 1 0
4 NVSS J012323+384357 Rad 01 23 23.8308 +38 43 57.900           ~ 4 1
5 [VV2006] J012328.9+380636 QSO 01 23 28.8728868000 +38 06 36.759141108     18.15     ~ 11 1
6 [VV2006] J012813.6+400330 QSO 01 28 13.6399516656 +40 03 29.884962384           ~ 6 1
7 [VV2006] J012841.4+443917 Bla 01 28 41.3391 +44 39 18.092       19.5   ~ 37 1
8 [VV2006] J013103.3+442801 QSO 01 31 03.3613896768 +44 28 01.864275636           ~ 7 1
9 [VV2006] J013206.1+434534 QSO 01 32 06.0642 +43 45 34.428           ~ 6 1
10 [VV2006] J013643.7+354531 QSO 01 36 43.6846389672 +35 45 31.171048380           ~ 6 1
11 NVSS J013647+440110 Rad 01 36 47.3138 +44 01 10.216           ~ 5 1
12 [VV2006] J013745.2+394136 QSO 01 37 45.1416048211 +39 41 36.146165315           ~ 7 1
13 NVSS J014302+370515 Rad 01 43 02.5385 +37 05 16.090           ~ 6 1
14 [VV2006] J015118.4+433200 QSO 01 51 18.3781 +43 32 00.547           ~ 7 1
15 [VV2006] J015120.7+441735 QSO 01 51 20.8779 +44 17 35.896     18.17     ~ 8 1
16 NVSS J015445+355804 Rad 01 54 45.4610 +35 58 04.630           ~ 5 1
17 87GB 015148.1+441852 BLL 01 54 54.4669724856 +44 33 37.960388496     20.49 18.9   ~ 46 1
18 NVSS J015628+445955 rG 01 56 28.5207666036 +44 59 56.477185029           ~ 7 1
19 [VV2006] J015705.0+412030 QSO 01 57 05.00518013 +41 20 30.6174212     13.80     ~ 23 1
20 ACO 276 ClG 01 57 08 +41 21.6           ~ 19 0
21 NVSS J015949+414431 Rad 01 59 49.3350 +41 44 32.932           ~ 4 1
22 4C 05.19 QSO 04 14 37.76734974 +05 34 42.3295956   24.100 23.800 21.270   ~ 371 2
23 QSO B1359+154 QSO 14 01 35.588 +15 13 24.15     21.90     ~ 73 1
24 NVSS J170234+551112 Rad 17 02 34.67 +55 11 12.4           ~ 2 0
25 NVSS J170241+581310 Rad 17 02 41.3686 +58 13 10.082           ~ 7 1
26 NVSS J170304+634230 Rad 17 03 04.704 +63 42 29.42           ~ 3 0
27 [VV2006] J170656.1+602338 QSO 17 06 56.0821479888 +60 23 37.929640272     19.41     ~ 12 1
28 NGC 6338 Bla 17 15 22.9842192344 +57 24 40.346559927   14.2   8   ~ 205 2
29 [VV2006] J171536.0+632336 Bla 17 15 35.9579643000 +63 23 36.002718168   19.05 18.83 18   ~ 43 1
30 6C 172021+592850 BLL 17 21 00.6468 +59 26 49.442       19.22   ~ 14 1
31 [VV2006] J172811.6+553230 QSO 17 28 11.6427035496 +55 32 30.452952984   21.59 20.96     ~ 8 1
32 [VV2006] J172821.7+675334 QSO 17 28 21.6675661440 +67 53 34.167050952   21.79 21.23     ~ 7 1
33 [VV2006] J172920.5+670214 QSO 17 29 20.4644067264 +67 02 13.032249252     20.56     ~ 8 1
34 [VV2006] J173052.7+602517 BLL 17 30 52.7128612584 +60 25 16.728022236   18.16 17.94     ~ 45 1
35 7C 173126.10+552651.00 LIN 17 32 23.7399953102 +55 24 52.747901903   16.24 15.51     ~ 29 1
36 [VV2006] J173307.5+581947 QSO 17 33 07.5309084264 +58 19 47.595203904     19.18     ~ 8 1
37 87GB 173314.7+605223 AG? 17 33 51.3377 +60 49 34.026           ~ 6 1
38 87GB 173425.7+565145 BLL 17 35 13.7730977088 +56 50 21.781034700     19.99     ~ 8 1
39 NVSS J174533+685605 Rad 17 45 33.1787 +68 56 05.689           ~ 7 1
40 [VV2006] J174734.0+590247 QSO 17 47 33.9392114544 +59 02 47.968652940     18.69     ~ 9 1
41 [VV2006] J175611.8+591856 QSO 17 56 11.8346 +59 18 56.824           ~ 7 1
42 LEDA 3096560 Bla 17 56 29.1453189810 +58 06 58.242816317           ~ 9 1
43 [VV2006] J175640.3+653145 QSO 17 56 40.3643257680 +65 31 45.914004696           ~ 9 1
44 [VV2006] J175923.1+644857 QSO 17 59 23.0091243744 +64 48 56.620315548     21.16     ~ 7 1
45 87GB 175954.0+612611 BLL 18 00 25.2411 +61 26 15.137       19.4   ~ 8 1
46 CLASS B1933+507 LeI 19 34 +50.8           ~ 7 0
47 NVSS J193825+664853 Rad 19 38 25.28898 +66 48 52.9152           ~ 117 2

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