2006MNRAS.373L..80M

Query : 2006MNRAS.373L..80M

2006MNRAS.373L..80M - Mon. Not. R. Astron. Soc., 373, L80-L84 (2006/November-3)

A population of high-redshift type 2 quasars - II. Radio properties.

MARTINEZ-SANSIGRE A., RAWLINGS S., GARN T., GREEN D.A., ALEXANDER P., KLOCKNER H.-R. and RILEY J.M.

Abstract (from CDS):

We present multi-frequency radio observations of a sample of z ∼ 2 obscured (type 2) quasars in the Spitzer extragalactic First Look Survey area. We combine the public data at 1.4 GHz, used in the selection of these sources, with new observations at 610 MHz (Giant Meterwave Radio Telescope) and at 4.9 GHz (Very Large Array). We find that the sample includes sources with steep, flat and gigahertz-peaked spectra. There are no strong correlations between the presence or absence of emission lines in the optical spectra and the radio spectral properties of the sample. However, there are no secure flat-spectrum type 2 quasars with narrow emission lines which would be problematic for unified schemes. Most of the population have straight radio spectra with spectral index α ∼ 1 as is expected for developed, potentially Fanaroff-Riley type I-like jets in which continuous injection of relativistic electrons is accompanied by inverse Compton losses against the cosmic microwave background.

Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

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

Simbad objects: 24

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Number of rows : 24
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 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2924 2
2 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
3 [MGC2004] J171311.078+595552.13 QSO 17 13 11.158 +59 55 51.53           ~ 9 0
4 AMS 2 QSO 17 13 15.9 +60 02 34           ~ 18 0
5 AMS 3 Sy1 17 13 40.193 +59 27 45.96           ~ 11 1
6 AMS 4 Sy1 17 13 40.481 +59 49 16.89       22.84   ~ 12 0
7 FLSVLA J171341.2+594924 Rad 17 13 41.201 +59 49 24.04           ~ 2 0
8 AMS 5 Sy1 17 13 42.7125 +59 39 20.323       24.90   ~ 18 1
9 AMS 6 Sy1 17 13 43.9 +59 57 15           ~ 20 0
10 [MGC2004] J171402.218+594829.22 QSO 17 14 02.243 +59 48 28.75           ~ 8 0
11 AMS 8 QSO 17 14 29.63016 +59 32 33.6516           ~ 14 0
12 AMS 9 Sy2 17 14 35.6379701904 +58 56 52.447436880           ~ 11 0
13 [MGC2004] J171620.080+594026.88 QSO 17 16 19.9980 +59 40 26.840           ~ 10 0
14 AMS 11 QSO 17 18 21.3 +59 40 27           ~ 12 0
15 AMS 12 Sy1 17 18 22.6 +59 01 55           ~ 17 0
16 SDSS J171844.39+592000.8 Sy1 17 18 44.380 +59 20 00.73       22.48   ~ 27 0
17 AMS 14 Sy1 17 18 45.5 +58 51 22       23.33   ~ 14 0
18 AMS 15 QSO 17 18 56.9 +59 03 24           ~ 10 0
19 AMS 16 QSO 17 19 42.1 +58 47 09           ~ 10 0
20 [YSF2007] MIPS 22558 QSO 17 20 45.17 +58 52 21.4       23.90   ~ 21 0
21 AMS 18 Sy1 17 20 46.3 +60 02 30           ~ 12 0
22 AMS 19 Sy1 17 20 48.0 +59 43 21           ~ 17 0
23 AMS 20 QSO 17 20 59.1190 +59 17 50.940           ~ 8 0
24 AMS 21 QSO 17 21 20.1 +59 03 48           ~ 11 0

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