2012MNRAS.425.1320I


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.02CEST11:10:07

2012MNRAS.425.1320I - Mon. Not. R. Astron. Soc., 425, 1320-1331 (2012/September-2)

Gas-rich mergers and feedback are ubiquitous amongst starbursting radio galaxies, as revealed by the VLA, IRAM PdBI and Herschel.

IVISON R.J., SMAIL I., AMBLARD A., ARUMUGAM V., DE BREUCK C., EMONTS B.H.C., FEAIN I., GREVE T.R., HAAS M., IBAR E., JARVIS M.J., KOVACS A., LEHNERT M.D., NESVADBA N.P.H., ROTTGERING H.J.A., SEYMOUR N. and WYLEZALEK D.

Abstract (from CDS):

We report new, sensitive observations of two z ∼ 3–3.5 far-infrared-luminous radio galaxies, 6C1909+72 and B3J2330+3927, in the 12CO J = 1-0 transition with the Karl Jansky Very Large Array and at 100–500m using Herschel, alongside new and archival 12CO J = 4-3 observations from the Plateau de Bure Interferometer. We introduce a new colour–colour diagnostic plot to constrain the redshifts of several distant, dusty galaxies in our target fields. A bright SMG near 6C1909+72 likely shares the same node or filament as the signpost active galactic nuclei (AGN), but it is not detected in 12CO despite ∼ 20000km/s of velocity coverage. Also in the 6C1909+72 field, a large, red dust feature spanning ≈ 500kpc is aligned with the radio jet. We suggest several processes by which metal-rich material may have been transported, favouring a collimated outflow reminiscent of the jet-oriented metal enrichment seen in local cluster environments. Our interferometric imaging reveals a gas-rich companion to B3J2330+3927; indeed, all bar one of the eight z ≳ 2 radio galaxies (or companions) detected in 12CO provide some evidence that starburst activity in radio-loud AGN at high redshift is driven by the interaction of two or more gas-rich systems in which a significant mass of stars has already formed, rather than via steady accretion of cold gas from the cosmic web. We find that the 12CO brightness temperature ratios in radio-loud AGN host galaxies are significantly higher than those seen in similarly intense starbursts where AGN activity is less pronounced. Our most extreme example, where \mi L\mi CO\mn 4\mo –\mn 3\mo '\mo/\mi L\mi CO\mn 1\mo –\mn 0\mo '\mo >\mn 2.7, provides evidence that significant energy is being deposited rapidly into the molecular gas via X-rays and/or mechanical (`quasar-mode') feedback from the AGN, leading to a high degree of turbulence globally and a low optical depth in 12CO – feedback that may lead to the cessation of star formation on a time-scale commensurate with that of the jet activity, ≲ 10Myr.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society 2012 RAS

Journal keyword(s): galaxies: active - galaxies: high-redshift - galaxies: starburst - infrared: galaxies - radio lines: galaxies

Status at CDS:  

Simbad objects: 21

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Number of rows : 21

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 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2910 2
2 NVSS J012142+132058 Rad 01 21 42.69 +13 20 58.1           ~ 34 0
3 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2483 2
4 MRC 0152-209 rG 01 54 55.70 -20 40 26.0           ~ 30 2
5 4C 60.07 rG 05 12 54.80 +60 30 51.7           ~ 87 1
6 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 315 1
7 NVSS J083053+191314 rG 08 30 53.44 +19 13 15.7           ~ 65 1
8 ACO 780 ClG 09 18 30 -12 15.7           ~ 425 0
9 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5311 6
10 NAME Spiderweb Galaxy AGN 11 40 48.3 -26 29 09     22.00     ~ 249 1
11 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5794 0
12 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6169 3
13 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3764 4
14 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3699 1
15 UGC 8782 LIN 13 52 17.765 +31 26 46.10   16.10 15.10     ~ 419 3
16 NAME TX J1908+7220 rG 19 08 23.50 +72 20 09.8           ~ 53 1
17 [SID2003] 8C 1909+722 1 smm 19 08 27.47 +72 19 28.0           ~ 3 0
18 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 701 0
19 [SID2003] B3 J2330+3927 1 smm 23 30 19.14 +39 27 03.0           ~ 2 0
20 [DNM2003] J2330+3927 c ? 23 30 24.70 +39 27 08.9           ~ 3 0
21 87GB 232800.5+391033 EmG 23 30 24.94 +39 27 12.0   24.70 23.97     ~ 50 2

    Equat.    Gal    SGal    Ecl

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2020.06.02-11:10:07

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