Integral-field spectroscopy of type II QSOs at z = 0.3-0.4

TitleIntegral-field spectroscopy of type II QSOs at z = 0.3-0.4
Publication TypeJournal Article
Year of Publication2010
AuthorsHumphrey A., Villar-Martín M., Sánchez S.F, Martínez-Sansigre A., Delgado R.G, Pérez E., Tadhunter C., Pérez-Torres M.A
JournalMonthly Notices of the Royal Astronomical Society
Volume408
PaginationL1-L5
Date Publishedoct
Keywordsgalaxies: active, galaxies: high-redshift, galaxies: ISM
Abstract

We present and analyse integral-field observations of six type II QSOs with z = 0.3-0.4, selected from the Sloan Digital Sky Survey (SDSS). Two of our sample are found to be surrounded by a nebula of warm ionized gas, with the largest nebula extending across 8 arcsec (40 kpc). Some regions of the extended nebulae show kinematics that are consistent with gravitational motion, while other regions show relatively perturbed kinematics: velocity shifts and linewidths too large to be readily explained by gravitational motion. We propose that a \~{}20 {\times} 20 kpc outflow is present in one of the galaxies. Possible mechanisms for triggering the outflow are discussed. In this object, we also find evidence for ionization both by shocks and by the radiation field of the AGN.

URLhttp://adsabs.harvard.edu/abs/2010MNRAS.408L...1H
DOI10.1111/j.1745-3933.2010.00906.x