2006A&A...447..489V


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET20:34:31

2006A&A...447..489V - Astronomy and Astrophysics, volume 447, 489-498 (2006/2-4)

Atomic hydrogen in the one-sided ``compact double'' radio galaxy JVAS 2050+364.

VERMEULEN R.C., LABIANO A., BARTHEL P.D., BAUM S.A., DE VRIES W.H. and O'DEA C.P.

Abstract (from CDS):

Localise and study the redshifted 21 cm HI absorption and the radio morphology of 2050+364. European VLBI Network UHF band (1049 MHz) spectral imaging, and examination of VLBI continuum images at multiple frequencies. 2050+364 may well be a one-sided core-jet source, which appears as a double (the well-known East-West component pair E, W) over a limited frequency range. W would then be the innermost visible portion of the jet, and could be at or adjacent to the canonical radio core. E is probably related to shocks at a sudden bend of the jet, towards an additional Northern extended steep-spectrum area (N), visible in our 1049MHz image. Our observations have resolved the HI absorbing region. A remarkably deep and narrow line component is present over the entire projected extent of 2050+364. It coincides in velocity with the [OIII] optical doublet lines to within 10km/s. This HI absorption could arise in the atomic cores of NLR clouds, and the motion in the NLR is then remarkably coherent both along the line-of-sight and across a projected distance of >300pc on the plane of the sky. Broader, shallower HI absorption at lower velocities covers only the plausible core area W. This absorption could be due to gas which is either being entrained by the inner jet or is flowing out from the accretion region; it could be related to the BLR.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: ISM - galaxies: individual: 2050+364 - galaxies: jets - radio lines: galaxies

Simbad objects: 9

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Number of rows : 9

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 QSO B0218+357 QSO 02 21 05.5 +35 56 14   20.0 20.0 19.60   ~ 513 2
2 3C 84 Sy2 03 19 48.1597607660 +41 30 42.114155434   13.10 12.48 11.09   ~ 3622 3
3 [VV2006] J122343.3-423537 QSO 12 23 43.3559 -42 35 36.963     17.0     ~ 34 2
4 QSO B1549-790 QSO 15 56 58.86989203 -79 14 04.2815029   18.80 18.800 17.84   ~ 184 1
5 ICRF J160913.3+264129 Sy2 16 09 13.32076181 +26 41 29.0362080   19       ~ 210 0
6 6C 161147+342017 QSO 16 13 41.0645258703 +34 12 47.911898732   17.98 17.46 17.07   ~ 585 1
7 NAME Cyg Superbubble PoC 20 47 +41.2           ~ 75 1
8 ICRF J205252.0+363535 Sy2 20 52 52.0549923 +36 35 35.300002   22.083   21.200   ~ 93 1
9 3C 454.3 Bla 22 53 57.74798 +16 08 53.5611   16.57 16.10 15.22   ~ 2557 2

    Equat.    Gal    SGal    Ecl

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2021.03.08-20:34:31

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