The discovery of a type-II quasar at z = 1.65 with integral-field spectroscopy ⋆

@article{JJarvis2004TheDO,
  title={The discovery of a type-II quasar at z = 1.65 with integral-field spectroscopy ⋆},
  author={Matt J.Jarvis and Caroline van Breukelen and Richard J. Wilman},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
  year={2004},
  volume={358}
}
In this letter we report the serendipitous discovery of a genuine type-II quasar at z = 1.65 using integral-field data from VIMOS on the VLT. This is the first discovery of a type-II quasar at z > 1 from optical data alone. J094531-242831, hereafter J09452428, exhibits strong narrow (v < 1500 km s −1 ) emission lines, has a resolved host galaxy, and is undetected to a radio flux-density limit of S5GHz = 0.15 mJy (3�). All of these lead us to believe that J0945-2428 is a bona fide type-II quasar… 

Figures and Tables from this paper

A population of high-redshift type-2 quasars-I. Selection Criteria and Optical Spectra
We discuss the relative merits of mid-infrared and X-ray selection of type 2 quasars. We describe the mid-infrared, near-infrared and radio selection criteria used to find a population of redshift z∼
The Radio Properties of Type 2 Quasars
This paper presents the first high-resolution and high-sensitivity study of the radio properties of optically selected type 2 quasars. We used the Very Large Array at 8.4 GHz to observe 59 sources
The luminosity function of Lyα emitters at 2.3 z
We have used VIsible MultiObject Spectrograph Integral-Field Unit (VIMOS-IFU) obser- vations centred on a radio galaxy at z = 2.9 to search for Lyemitters within a comov- ing volume of � 10 4 Mpc 3 .
No evidence for Population III stars or a direct collapse black hole in the z = 6.6 Lyman α emitter ‘CR7’
The z = 6.6 Lyman α emitter ‘CR7’ has been claimed to have a Population III (Pop III) like stellar population, or alternatively, be a candidate direct collapse black hole (DCBH). In this paper, we
The possible detection of high‐redshift Type II QSOs in deep fields
The colours of high-redshift Type II quasi-stellar objects (QSOs) are synthesized from observations of moderate-redshift systems. It is shown that Type II QSOs are comparable to starbursts at
C IV λ1549 as an Eigenvector 1 Parameter for Active Galactic Nuclei
We are exploring a spectroscopic unification for all types of broad-line emitting AGNs. The four-dimensional Eigenvector 1 (4DE1) parameter space organizes quasar diversity in a sequence primarily
Integral-Field Studies of the High-Redshift Universe
We present results from a new method of exploring the distant Universe. We use 3-D spectroscopy to sample a large cosmological volume at a time when the Universe was less than 3 billion years old to
An 80-kpc Lyα halo around a high-redshift type-2 quasi-stellar object
‘The definitive version is available at: www3.interscience.wiley.com '. Copyright Blackwell Publishing / Royal Astronomical Society. DOI: 10.1111/j.1365-2966.2008.14232.x
The 6C** sample of steep‐spectrum radio sources – II. Redshift distribution and the space density of high‐redshift radio galaxies
The definitive version is available at www.blackwell-synergy.com--Copyright Blackwell Publishing DOI : 10.1111/j.1365-2966.2007.11390.x

References

SHOWING 1-10 OF 37 REFERENCES
Chandra Detection of a Type II Quasar at z = 3.288*
We report on observations of a type II quasar at redshift z ¼ 3:288, identified as a hard X-ray source in a 185 ks observation with the Chandra X-Ray Observatory and as a high-redshift photometric
Optical Identification of the ASCA Lynx Deep Survey: An Association of Quasi-Stellar Objects and a Supercluster at z=1.3?
Results of optical identification of the ASCA Lynx Deep Survey are presented. Six X-ray sources are detected in the 2-7 keV band using the Solid-State Imaging Spectrometer in a ~20' × 20' field of
A classic type 2 QSO
In the Chandra Deep Field-South 1 Ms exposure, we have found, at redshift 3.700 ± 0.005, the most distant type 2 active galactic nucleus ever detected. It is the source with the hardest X-ray
A sample of 6C radio sources designed to find objects at redshift z > 4 - II. Spectrophotometry and emission-line properties
This is the second in a series of three papers that present and interpret basic observational data on the 6C* 151-MHz radio sample: a low-frequency selected sample that exploits filtering criteria
A sample of 6C radio sources designed to find objects at redshift z>4– III. Imaging and the radio galaxy K–z relation
In this paper, the third and final of a series, we present complete K− band imaging and some complementary I−band imaging of the filtered 6C* sample. We find no systematic differences between the K −
Thermal-infrared imaging of 3C radio galaxies at z , 1
We present the results of a programme of thermal-infrared imaging of 19 z∼ 1 radio galaxies from the 3CR and 3CRR (LRL) samples. We detect emission at L′ (3.8 μm) from four objects; in each case the
A physical model for the hard X-ray background
We combine a semi-analytic galaxy formation model with a prescription for the obscured growth of massive black holes, to reproduce the hard X-ray background (XRB), the local 2–10 keV active galactic
A Comparison of the Optical Properties of Radio-loud and Radio-quiet Quasars
We have made radio observations of 87 optically selected quasars at 5 GHz with the VLA in order to measure the radio power for these objects and hence determine how the fraction of radio-loud quasars
Fitting the spectrum of the X-ray background: the effects of high-metallicity absorption
Recent work by Risaliti, Maiolino & Salvati suggests that more than half of all Seyfert 2 galaxies in the local Universe are Compton-thick (NH>1024 cm−2). This has implications for AGN synthesis
The X-ray background and AGNs
...
1
2
3
4
...