Optical off‐nuclear spectra of quasar hosts and radio galaxies

  title={Optical off‐nuclear spectra of quasar hosts and radio galaxies},
  author={David H. Hughes and Marek J. Kukula and James S. Dunlop and Todd Boroson University of Edinburgh and Noao},
  journal={Monthly Notices of the Royal Astronomical Society},
  • D. Hughes, M. Kukula, +2 authors Noao
  • Published 1 February 2000
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We present optical (∼3200 to ∼9000 A) off-nuclear spectra of 26 powerful active galaxies in the redshift range 0.1≤z≤0.3, obtained with the Mayall and William Herschel 4-m class telescopes. The sample consists of radio-quiet quasars, radio-loud quasars (all with −23≥MV≥−26) and radio galaxies of Fanaroff–Riley Type II (with extended radio luminosities and spectral indices comparable to those of the radio-loud quasars). The spectra were all taken approximately 5 arcsec off-nucleus, with offsets… Expand

Figures and Tables from this paper

The ages of quasar host galaxies
We present the results of fitting deep off-nuclear optical spectra of radio-quiet quasars, radio-loud quasars and radio galaxies at z≃0.2 with evolutionary synthesis models of galaxy evolution. OurExpand
The near-infrared properties of the host galaxies of radio quasars
We present K-band images of 31 radio quasars selected from the B3-VLA quasar sample. A new method has been developed to detect and restore the host galaxies of these quasars. We have detected theExpand
Host galaxies of luminous quasars: population synthesis of optical off-axis spectra
There is increasing evidence of a connection between AGN activity and galaxy evolution. To obtain further insight into this potentially important e volutionary phase, we analyse the properties ofExpand
The B-band luminosities of quasar host galaxies
We report on the analysis of B-band imaging data of 57 low-redshift quasi-stellar objects (quasars/QSOs) and Seyfert 1 galaxies selected from the Hamburg/ESO Survey, for which hostgalaxy-dependentExpand
We present stellar velocity dispersion measurements in the host galaxies of ten luminous quasars (MV < –23) using the Ca H&K lines in off-nuclear spectra. We combine these data with effective radiiExpand
A NICMOS imaging study of high-z quasar host galaxies
We present the first results from a major Hubble Space Telescope programme designed to investigate the cosmological evolution of quasar host galaxies from z ≃ 2 to the present day. Here we describe JExpand
Quasars, their host galaxies and their central black holes
We present the final results from our deep Hubble Space Telescope (HST) imaging study of the host galaxies of radio-quiet quasars (RQQs), radio-loud quasars (RLQs) and radio galaxies (RGs). WeExpand
Quasar host galaxy star formation activity from multicolour data
We investigate multicolour imaging data of a complete sample of 19 low redshift (z < 0.2) quasar host galaxies. The sample was imaged in four optical (BVRi) and three near-infrared bands (JHKs).Expand
Quasar environments at 0.5 < z < 0.8
Over the past few years, we have been collecting data with the Nordic Optical Telescope (NOT) on the galaxy environments around active galactic nuclei (AGN). Here we present some results from aExpand
Spatial decomposition of on-nucleus spectra of quasar host galaxies*
In order to study the host galaxies of type 1 (broad-line) quasars, we present a semi-analytic modelling method to decompose the on-nucleus spectra of quasars into nuclear and host galaxy channels.Expand


A near-IR study of the host galaxies of radio-quiet quasars, radio-loud quasars and radio galaxies
We present the results of a detailed analysis of the host galaxies of powerful AGN as revealed by deep near-infrared imaging. New K-band images have been obtained of a sample of radio galaxies (RGs)Expand
We present the first results from a major HST WFPC2 imaging study aimed at providing the first statistically meaningful comparison of the morphologies, luminosities, scalelengths and colours of theExpand
Spectrophotometry of the galaxies and nebulosity associated with the quasar III Zw 2.
Results are presented for spectrophotometry of the object III Zw 2, the faint nebulosity to the NW of its nucleus, and two associated galaxies (a normal elliptical and a more luminous late-typeExpand
Infrared imaging of the host galaxies of radio-loud and radio-quiet quasars
We present initial results from the first deep near-infrared imaging study of the host galaxies of an extensive sample of low-redshift (z<0.4) radio-loud and radio-quiet quasars. To minimizeExpand
What is the difference between radio-loud and radio-quiet quasi-stellar objects
Measures of the nuclear and host galaxy luminosities and colors and a morphological discussion of the host galaxies are presented for a sample of low-redshift, high-luminosity, radio-quiet QSOs whoseExpand
Hubble Space Telescope Images of a Sample of Twenty Nearby Luminous Quasars
Observations with the Wide-Field Camera of the Hubble Space Telescope are presented for a representative sample of 20 intrinsically luminous quasars with redshifts smaller than 0.30. TheseExpand
HST images of nearby luminous quasars
Strong upper limits are placed on the visual-band brightness of galactic hosts for four luminous, radioquiet quasars with redshifts between 0.16 and 0.24 that were studied with the Hubble SpaceExpand
Hubble Space Telescope Imaging of z ? 0.4 Quasar Host Galaxies Selected by Quasar Radio and Optical Properties
A sample of 16 quasars selected from the Large Bright Quasar Survey in the redshift range 0.4 < z < 0.5 has been imaged in the R band with the Planetary Camera on the WFPC2 instrument of the HubbleExpand
Ground-based and HST optical-infrared studies of quasar host galaxies at low redshift
Abstract We describe the results from a series of ground-based and HST programs aimed at investigating the host galaxies of both radio-loud and radio-quiet quasars (RLQs & RQQs) and FRII radioExpand
Quasars and Ultraluminous Infrared Galaxies: At the Limit?
We have detected the host galaxies of 16 nearby, radio-quiet quasars using images obtained with the Near-Infrared Camera and MultiObject Spectrometer. We confirm that these luminous quasars tend toExpand