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AGN feedback on the ISM of 3C 236

Published online by Cambridge University Press:  21 March 2013

A. Labiano ,
S. García-Burillo ,
F. Combes ,
A. Usero ,
R. Soria-Ruiz ,
G. Tremblay ,
R. Neri ,
A. Fuente ,
R. Morganti  and
T. Oosterloo
A. Labiano
Affiliation:
Centro de Astrobiología (CSIC-INTA), Madrid, Spain. email: [email protected]
S. García-Burillo
Affiliation:
Observatorio Astronómico Nacional, 28014, Madrid, Spain.
F. Combes
Affiliation:
Observatoire de Paris, LERMA & CNRS, Paris, France.
A. Usero
Affiliation:
Observatorio Astronómico Nacional, 28014, Madrid, Spain.
R. Soria-Ruiz
Affiliation:
Observatorio Astronómico Nacional, 28014, Madrid, Spain.
G. Tremblay
Affiliation:
European Southern Observatory, Garching bei München, Germany.
R. Neri
Affiliation:
Institut de Radioastronomie Millimétrique, St. Martin d'Héres Cedex, France.
A. Fuente
Affiliation:
Observatorio Astronómico Nacional, 28014, Madrid, Spain.
R. Morganti
Affiliation:
Netherlands Foundation for Research in Astronomy, Dwingeloo, The Netherlands. Kapteyn Astronomical Institute, Groningen, The Netherlands.
T. Oosterloo
Affiliation:
Netherlands Foundation for Research in Astronomy, Dwingeloo, The Netherlands. Kapteyn Astronomical Institute, Groningen, The Netherlands.
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Abstract

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We have carried out 1mm/3mm continuum and 12CO(2−1) line high resolution observations to identify the footprints of AGN feedback on 3C 236. The CO emission comes from a spatially resolved disk characterized by a regular rotating pattern. Within the limits imposed by the sensitivity and velocity coverage of our data, we do not detect any outflow signatures in the cold molecular gas. Re-inspection of optical and IR spectra, shows the presence of a previously unknown ionized gas outflow. The star-formation efficiency in 3C 236, is consistent with the value measured in normal galaxies, which follow the canonical Kennicutt-Schmidt law. This result, confirmed to hold in other young radio sources examined in this work, is in stark contrast with the factor of 10–50 lower SFE that has been claimed to characterize evolved powerful radio galaxies. The recent reactivation of the AGN in 3C 236 is a likely explanation for the early evolutionary status of its molecular disk.

Keywords

galaxies: individual (3C 236) — galaxies: ISM — galaxies: kinematics and dynamics — galaxies: active — ISM: jets and outflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 374
Copyright
Copyright © International Astronomical Union 2013