2016A&A...596A..19E


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.16CEST18:03:32

2016A&A...596A..19E - Astronomy and Astrophysics, volume 596A, 19-19 (2016/12-1)

From galaxy-scale fueling to nuclear-scale feedback. The merger-state of radio galaxies 3C 293, 3C 305, and 4C 12.50.

EMONTS B.H.C., MORGANTI R., VILLAR-MARTIN M., HODGSON J., BROGT E., TADHUNTER C.N., MAHONY E. and OOSTERLOO T.A.

Abstract (from CDS):

Powerful radio galaxies are often associated with gas-rich galaxy mergers. These mergers may provide the fuel to trigger starburst and active galactic nuclear (AGN) activity.In this Research Note, we study the host galaxies of three seemingly young or re-started radio sources that drive fast outflows of cool neutral hydrogen (HI) gas, namely 3C 293, 3C 305 and 4C 12.50 (PKS 1345+12). Our aim is to link the feedback processes in the central kpc-scale region with new information on the distribution of stars and gas at scales of the galaxy. For this, we use deep optical V-band imaging of the host galaxies, complemented with HI emission-line observations to study their gaseous environments. We find prominent optical tidal features in all three radio galaxies, which confirm previous claims that 3C 293, 3C 305, and 4C 12.50 have been involved in a recent galaxy merger or interaction. Our data show the complex morphology of the host galaxies and identify the companion galaxies that are likely involved in the merger or interaction. The radio sources appear to be (re-)triggered at a different stage of the merger; 4C 12.50 is a pre-coalescent and possibly multiple merger, 3C 293 is a post-coalescent merger that is undergoing a minor interaction with a close satellite galaxy, while 3C 305 appears to be shaped by an interaction with a gas-rich companion. For 3C 293 and 3C 305, we do not detect HI beyond the inner ∼30-45kpc region, which shows that the bulk of the cold gas is concentrated within the host galaxy, rather than along the widespread tidal features.

Abstract Copyright: © ESO, 2016

Journal keyword(s): galaxies: active - galaxies: interactions - galaxies: jets - galaxies: starburst - galaxies: evolution - ISM: jets and outflows

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 - 2020
#notes
1 NGC 612 Sy2 01 33 57.751 -36 29 35.80   13.90 13.15 12.33   ~ 194 0
2 NVSS J072537+295714 rG 07 25 37.258 +29 57 14.79   15.60       ~ 76 2
3 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3716 1
4 ICRF J134733.3+121724 Sy2 13 47 33.36161542 +12 17 24.2402572   19.28 18.44 15.718   ~ 524 3
5 UGC 8782 LIN 13 52 17.765 +31 26 46.10   16.10 15.10     ~ 420 3
6 IC 1065 Sy2 14 49 21.5921149894 +63 16 13.816373757   17.30 16.39     ~ 333 1
7 ICRF J160913.3+264129 Sy2 16 09 13.32076181 +26 41 29.0362080   19       ~ 203 0
8 NGC 6872 IG 20 16 56.4029251107 -70 46 05.071599597   11.97 11.59 10.71 11.9 ~ 80 0
9 IC 4970 IG 20 16 57.9 -70 44 57   14.16 13.88 13.06   ~ 26 0

    Equat.    Gal    SGal    Ecl

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2020.07.16-18:03:32

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