Mid-infrared Spectroscopy of High-redshift 3CRR Sources

@article{Leipski2010MidinfraredSO,
  title={Mid-infrared Spectroscopy of High-redshift 3CRR Sources},
  author={Christian Leipski and Martin Haas and S. P. Willner and Matthew L. N. Ashby and Belinda J. Wilkes and Giovanni G. Fazio and Robert Antonucci and Peter Barthel and Rolf Chini and Patrick Ogle and Ralf Siebenmorgen and Frank Heymann},
  journal={The Astrophysical Journal},
  year={2010},
  volume={717},
  pages={766-775}
}
Using the Spitzer Space Telescope, we have obtained rest-frame 9-16 μm spectra of 11 quasars and 9 radio galaxies from the 3CRR catalog at redshifts 1.0 < z < 1.4. This complete flux-limited 178 MHz selected sample is unbiased with respect to orientation and therefore suited to studying orientation-dependent effects in the most powerful active galactic nuclei (AGNs). The mean radio-galaxy spectrum shows a clear silicate absorption feature (τ_(9.7μm) = 1.1) whereas the mean quasar spectrum shows… Expand

Figures and Tables from this paper

Star formation in 3CR radio galaxies and quasars at z < 1
Using the Herschel Space Observatory we have observed a representative sample of 87 powerful 3CR sources at redshift z < 1. The far-infrared (FIR, 70-500 micron) photometry is combined withExpand
THE SPITZER HIGH-REDSHIFT RADIO GALAXY SURVEY
We present results from a comprehensive imaging survey of 70 radio galaxies at redshifts 1 3, there is tentative evidence for a factor of two decrease in stellar mass. This suggests that radioExpand
QUANTIFYING THE ANISOTROPY IN THE INFRARED EMISSION OF POWERFUL ACTIVE GALACTIC NUCLEI
We use rest-frame near- and mid-IR data of an isotropically selected sample of quasars and radio galaxies at 1.0 ? z ? 1.4, which have been published previously by Leipski et al., to study theExpand
The far-infrared emission of the radio-loud quasar 3C 318
3C 318, a radio-loud quasar at z = 1.574, is a subgalactic-sized radio source, and a good test-bed for the interplay between black hole and galaxy growth in the high-z Universe. Based on its IRAS,Expand
Complete infrared spectral energy distributions of millimeter detected quasars at z > 5
We present Herschel far-infrared (FIR) photometry of 11 quasars at redshift z > 5 that have previously been detected at 1.2 mm. We perform full spectral energy distribution (SED) fits over theExpand
Spitzer MID-IR spectroscopy of powerful 2Jy and 3CRR radio galaxies. II : Agn power indicators and unification
It remains uncertain which continuum and emission line diagnostics best indicate the bolometric powers of active galactic nuclei (AGNs), especially given the attenuation caused by the circumnuclearExpand
Star formation in z > 1 3CR host galaxies as seen by Herschel
We present Herschel (PACS and SPIRE) far-infrared (FIR) photometry of a complete sample of z> 1 3CR sources, from the Herschel guaranteed time project The Herschel Legacy of distant radio-loud AGN.Expand
THE EVOLUTION OF THE DUSTY TORUS COVERING FACTOR IN QUASARS
We have assembled a large sample of 5996 quasars at 2.0 ≤ z ≤ 2.4 (high-z) or 0.7 ≤ z ≤ 1.1 (low-z) from the Sloan Digital Sky Survey (SDSS) ninth and seventh data release and quasar catalogs. TheExpand
Disentangling star formation and AGN activity in powerful infrared luminous radio galaxies at 1 < z < 4
High-redshift radio galaxies present signs of both star formation and AGN activity, making them ideal candidates to investigate the connection and coevolution of AGN and star formation in theExpand
The 3CR Chandra snapshot survey: extragalactic radio sources with 0.5$
This paper presents the analysis of Chandra X-ray snapshot observations of a subsample of the extragalactic sources listed in the revised Third Cambridge radio catalog (3CR), previously lacking X-rayExpand
...
1
2
3
4
...

References

SHOWING 1-10 OF 69 REFERENCES
Near- and Mid-Infrared Photometry of High-Redshift 3CR Sources
Using the Spitzer Space Telescope, we have obtained 3.6-24 μm photometry of 38 radio galaxies and 24 quasars from the 3CR (Third Cambridge Revised Catalog of Radio Sources) at redshift 1 < z < 2.5.Expand
Spitzer Observations of 3C Quasars and Radio Galaxies: Mid-Infrared Properties of Powerful Radio Sources
We have measured mid-infrared radiation from an orientation-unbiased sample of 3CRR galaxies and quasars at redshifts 0.4 ≤ z ≤ 1.2 with the IRS and MIPS instruments on Spitzer. Powerful emissionExpand
ISOCAM survey and dust models of 3CR radio galaxies and quasars
We present a survey of all 3CR sources imaged with ISOCAM onboard the Infrared Space Observatory (ISO) . The sample consists mostly of radio-loud active galactic nuclei (AGN). For each source, weExpand
Dust emission from 3C radio galaxies and quasars: New ISO observations favour the unified scheme
In order to test the unied scheme for luminous radio galaxies and quasars we observed 10 galaxy/quasar pairs from the 3CR catalogue with ISOPHOT at infrared wavelengths between 5 and 180 m. Each pairExpand
The active nuclei of z < 1.0 3CRR radio sources
We combine Chandraand XMM-NewtonX-ray data from our previous papers with new X-ray observations and with Spitzer mid-infrared data in order to study the nature of the nuclei o f radio galaxies andExpand
SPITZER REVEALS HIDDEN QUASAR NUCLEI IN SOME POWERFUL FR II RADIO GALAXIES
We present a Spitzer mid-infrared survey of 42 Fanaroff-Riley class II radio galaxies and quasars from the 3CRR catalog at redshift z 8 × 10 to the 43rd ergs s^-1, indicating strong thermal emissionExpand
Dust tori in radio galaxies
Aims. We investigate the quasar – radio galaxy unification scenario and detect dust tori within radio galaxies of various types. Methods. Using VISIR on the VLT, we acquired sub-arcsecond (∼0.40 �� )Expand
Far-Infrared Observations of Radio Quasars and FR II Radio Galaxies
We report MIPS photometry of 20 radio-loud quasars and galaxies at 24 and 70 μm (and of five at 160 μm). We combine this sample with additional sources detected in the far-infrared by IRAS and ISOExpand
An optical spectroscopic survey of the 3CR sample of radio galaxies with z < 0.3. I. Presentation of the data ⋆
We present a homogeneous and 92% complete dataset of optical nuclear spectra for the 113 3CR radio sources with redshifts < 0.3, obtained with the Telescopio Nazionale Galileo. For these sources weExpand
Revealing the Effects of Orientation in Composite Quasar Spectra: Erratum
We present low-resolution, composite optical spectra for 60 quasars drawn from the 408 MHz-selected Molonglo Quasar Sample. Individual spectra have been co-added according to the ratio of radioExpand
...
1
2
3
4
5
...