By observing the local luminous infrared galaxy NGC5135 with the near-IR IFU spectrograph SINFONI (ESO-VLT), we report an approx. 600 pc (in projection) AGN outflow traced by [SiVI]1.96mum emission. This is the largest outflow traced by a coronal line ever reported. Its large spatial scale suggests that shocks, in addition to AGN continuum emission, are needed to locally produce [SiVI] emission. We also show, for the first time, clear kinematical evidence of the AGN-outflow vs. ISM interaction through variations in the 2D velocity fields of different gas phases. Such local perturbations in the kinematics clearly match the outflow structure. We use the [FeII]1.64mum emission, a supernovae tracer, to estimate the supernovae rate in different star-forming knots (approx. 250 pc across) within the central 2.3 kpc of NGC5135. The estimated supernovae rates go from 0.02 to 0.08 yr^{-1} being in excellent agreement with predictions from 6 cm radio emission in the same areas.
@article{arxiv.1102.0012,
title = {The local LIRG NGC5135: AGN and SN activity traced by NIR IFU spectroscopy},
author = {A. G. Bedregal and L. Colina and R. Azzollini and S. Arribas and A. Alonso-Herrero},
journal= {arXiv preprint arXiv:1102.0012},
year = {2011}
}
Comments
6 pages, 3 figures. To appear in A.S.P. Conference Series, "Galaxy Evolution: Infrared to Millimeter Wavelength Perspective", 25-29 October 2010, Guilin, China