1999ApJ...516..716K


Query : 1999ApJ...516..716K

1999ApJ...516..716K - Astrophys. J., 516, 716-728 (1999/May-2)

Coaxial jets and sheaths in wide-angle-tailed radio galaxies.

KATZ-STONE D.M., RUDNICK L., BUTENHOFF C. and O'DONOGHUE A.A.

Abstract (from CDS):

We add 20, 6, and 3.6 cm VLA observations of two wide-angle tails (WATs), 1231+674 and 1433+553, to existing VLA data at 6 and 20 cm in order to study the variations of spectral index as a function of position. We apply the spectral tomography process that we introduced in our analysis of 3C 67, 3C 190, and 3C 449 (Katz-Stone; Katz-Stone & Rudnick). Both spectral tomography and polarization maps indicate that there are two distinct extended components in each source. As in the case of 3C 449, we find that each source has a flat spectrum jet surrounded by a steeper spectrum sheath. The steep components tend to be more highly polarized than the flat components. We discuss a number of possibilities for the dynamics of the jet/sheath systems and the evolution of their relativistic electron populations. Although the exact nature of these two coaxial components is still uncertain, their existence requires new models of jets in FR I sources and may also have implications for the dichotomy between FR I and FR II galaxies.

Abstract Copyright:

Journal keyword(s): galaxies: individual (1231+674, 1433+553) - Galaxies: Jets - Galaxies: Kinematics and Dynamics - Galaxies: Structure - Polarization

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 7C 022118.10+273638.00 Sy1 02 24 12.2882485914 +27 50 11.569481672   19.502 18 18.263   ~ 205 1
2 NGC 1265 GiC 03 18 15.674 +41 51 27.94   14.7       ~ 352 2
3 3C 190 QSO 08 01 33.5526629491 +14 14 42.815302770   21.07 20.26 18.972   ~ 223 2
4 4C 67.21 rG 12 33 15.2207306103 +67 07 43.333326978           ~ 27 0
5 ICRF J131327.9+673550 G 13 13 27.9889603 +67 35 50.359991           ~ 53 1
6 6C 141804+543700 BLL 14 19 46.5976435439 +54 23 14.787308481   16.17 15.65 14.16   ~ 556 1
7 2MASX J14352846+5507519 BiC 14 35 28.462 +55 07 52.00   18.7       ~ 31 0
8 UGC 12064 AGN 22 31 20.625 +39 21 29.81   14.6       ~ 423 1

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2021.09.22-13:00:23

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