2009A&A...494..471O


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.02CEST12:54:00

2009A&A...494..471O - Astronomy and Astrophysics, volume 494, 471-488 (2009/2-1)

Physical properties of very powerful FRII radio galaxies.

O'DEA C.P., DALY R.A., KHARB P., FREEMAN K.A. and BAUM S.A.

Abstract (from CDS):

We estimate the ages and physical properties of powerful radio galaxies. An analysis of new multi-wavelength VLA observations of eleven very powerful classical double (FRIIb) radio galaxies with redshifts between 0.4 and 1.3 is presented. We estimate ages and velocities for each side of each source. The eleven new sources are combined with previously studied samples and the characteristics of the full sample of 31 sources are studied; the full sample includes sources with redshifts between 0.056 and 1.79, and core-hot spot sizes of about 30 to 400 kpc. The velocities are independent of core-hotspot separation, suggesting the rate of growth of a given source is roughly constant over the source lifetime. We combine the rate of growth, width, and pressure of a source to study the beam power, lifetime, energy, and ambient gas density using standard methods previously applied to smaller samples. Typical beam powers are in the range from 1044 to 1046 erg/s; we show that this quantity is insensitive to assumptions regarding minimum energy conditions. The beam powers are independent of core-hotspot separation suggesting that the beam power of a given source is roughly constant over the source lifetime. Typical total source lifetimes are found to be about a fewx(106-107)years, and typical total outflow energies (E/c2) are found to be about 5x(105-106)M. Ambient gas densities are found to decrease with increasing core-hotspot distance, but have no redshift dependence. Overall, the results obtained with the sample of 31 sources studied here are consistent with those obtained earlier with smaller samples.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: jets - galaxies: intergalactic medium

Status at CDS:  

Simbad objects: 32

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Number of rows : 32

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 3C 6.1 rG 00 16 31.60 +79 16 51.7   22       ~ 114 1
2 3C 34.0 rG 01 10 18.60 +31 47 20.0   21       ~ 160 2
3 3C 41.0 rG 01 26 44.30 +33 13 11.0   21       ~ 155 1
4 3C 44 rG 01 31 21.50 +06 23 37.8   21       ~ 63 1
5 3C 54.0 rG 01 55 30.10 +43 45 55.0   22.0       ~ 84 1
6 3C 55.0 rG 01 57 10.7 +28 51 40   20.8       ~ 144 1
7 3C 68.2 rG 02 34 23.80 +31 34 17.0   24       ~ 126 1
8 3C 114 rG 04 20 22.10 +17 53 54.0   22       ~ 68 2
9 3C 142.1 rG 05 31 29.40 +06 30 25.0   21       ~ 81 1
10 3C 169.1 rG 06 51 15.30 +45 09 26.0   20.5       ~ 58 1
11 3C 172 rG 07 02 08.31 +25 13 53.5   20.5       ~ 114 0
12 3C 194.0 QSO 08 10 03.344 +42 28 03.19   24       ~ 102 1
13 3C 239 rG 10 11 45.6 +46 28 20   22.5       ~ 144 1
14 3C 244.1 QSO 10 33 33.982 +58 14 35.85   19.0 19.0     ~ 173 1
15 3C 247 QSO 10 58 58.70 +43 01 23.0   21.5       ~ 152 1
16 3C 265.0 Sy1 11 45 29.0 +31 33 50   20.0       ~ 237 0
17 3C 267 rG 11 49 56.5 +12 47 19   22.5       ~ 146 2
18 3C 268.1 rG 12 00 19.2 +73 00 46   22       ~ 142 1
19 2C 1066 SyG 12 56 57.9 +47 20 20   22.0       ~ 268 0
20 3C 289 QSO 13 45 26.7 +49 46 31   23       ~ 152 1
21 3C 295 Sy2 14 11 20.467 +52 12 09.52   22.34 20.80 18.54   ~ 885 5
22 4C 55.31 rG 15 35 01.20 +55 36 48.0   23       ~ 112 1
23 3C 324.0 Sy1 15 49 48.9 +21 25 38   21.5       ~ 300 0
24 7C 154914.09+625020.00 QSO 15 49 59.2 +62 41 18   21.92 20.70     ~ 130 2
25 NAME 3C 330G2 Sy2 16 09 35.0 +65 56 39   20.33       ~ 253 1
26 3C 337 QSO 16 28 53.9 +44 19 03   20.0       ~ 138 1
27 3C 356 QSO 17 24 20.2 +50 57 14   21.5 21.5     ~ 216 1
28 NAME Cyg A Sy2 19 59 28.35645829 +40 44 02.0966496   16.22 15.10     ~ 2087 2
29 3C 427.1 rG 21 04 07.3 +76 33 08   23.3 21.1     ~ 145 1
30 3C 437 rG 21 47 25.10 +15 20 37.0   23       ~ 120 2
31 3C 441 rG 22 06 04.90 +29 29 20.0   21.0       ~ 185 3
32 3C 469.1 rG 23 55 23.3 +79 55 20   22.5       ~ 78 2

    Equat.    Gal    SGal    Ecl

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2020.04.02-12:54:00

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