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Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - The KMOS AGN Survey at High redshift (KASHz)
T2 - the prevalence and drivers of ionized outflows in the host galaxies of X-ray AGN
AU - Harrison, C. M.
AU - Alexander, D. M.
AU - Mullaney, J. R.
AU - Stott, J. P.
AU - Swinbank, A. M.
AU - Arumugam, V.
AU - Bauer, F. E.
AU - Bower, R. G.
AU - Bunker, A. J.
AU - Sharples, R. M.
PY - 2016/2/21
Y1 - 2016/2/21
N2 - We present the first results from the KMOS (K-band Multi-Object Spectrograph) AGN (active galactic nuclei) Survey at High redshift (KASHz), a VLT/KMOS integral-field spectroscopic (IFS) survey of z ≲ 0.6 AGN. We present galaxy-integrated spectra of 89 X-ray AGN (L2-10 keV = 1042-1045 erg s-1), for which we observed [OIII] (z ≈ 1.1-1.7) or Hα emission (z ≈ 0.6-1.1). The targets have X-ray luminosities representative of the parent AGN population and we explore the emission-line luminosities as a function of X-ray luminosity. For the [OIII] targets,≈50 per cent have ionized gas velocities indicative of gas that is dominated by outflows and/or highly turbulent material (i.e. overall linewidths≲600 km s-1). The most luminous half (i.e. LX > 6 × 1043 erg s-1) have a ≲2 times higher incidence of such velocities. On the basis of our results, we find no evidence that X-ray obscured AGN are more likely to host extreme kinematics than unobscured AGN. Our KASHz sample has a distribution of gas velocities that is consistent with a luminosity-matched sample ofz
AB - We present the first results from the KMOS (K-band Multi-Object Spectrograph) AGN (active galactic nuclei) Survey at High redshift (KASHz), a VLT/KMOS integral-field spectroscopic (IFS) survey of z ≲ 0.6 AGN. We present galaxy-integrated spectra of 89 X-ray AGN (L2-10 keV = 1042-1045 erg s-1), for which we observed [OIII] (z ≈ 1.1-1.7) or Hα emission (z ≈ 0.6-1.1). The targets have X-ray luminosities representative of the parent AGN population and we explore the emission-line luminosities as a function of X-ray luminosity. For the [OIII] targets,≈50 per cent have ionized gas velocities indicative of gas that is dominated by outflows and/or highly turbulent material (i.e. overall linewidths≲600 km s-1). The most luminous half (i.e. LX > 6 × 1043 erg s-1) have a ≲2 times higher incidence of such velocities. On the basis of our results, we find no evidence that X-ray obscured AGN are more likely to host extreme kinematics than unobscured AGN. Our KASHz sample has a distribution of gas velocities that is consistent with a luminosity-matched sample ofz
KW - Galaxies: active
KW - Galaxies: evolution
KW - Galaxies: kinematics and dynamics
KW - Quasars: emission lines
U2 - 10.1093/mnras/stv2727
DO - 10.1093/mnras/stv2727
M3 - Journal article
AN - SCOPUS:84960830681
VL - 456
SP - 1195
EP - 1220
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 2
ER -