Sub-mm detection of a high redshift Type 2 QSO

Abstract

We report on the first SCUBA detection of a Type 2 QSO at z=3.660 in the Chandra Deep Field South. This source is X-ray absorbed, shows only narrow emission lines in the optical spectrum and is detected in the sub-mm: it is the ideal candidate in an evolution scheme for AGN (e.g. Fabian (1999); Page et al. (2004)) of an early phase corresponding to the main growth of the host galaxy and formation of the central black hole. The overall photometry (from the radio to the X-ray energy band) of this source is well reproduced by the spectral energy distribution (SED) of NGC 6240, while it is incompatible with the spectrum of a Type 1 QSO (3C273) or a starburst galaxy (Arp 220). Its sub-mm (850 μm) to X-ray (2 keV) spectral slope (alpha_SX) is close to the predicted value for a Compton-thick AGN in which only 1% of the nuclear emission emerges through scattering. Using the observed flux at 850 μm we have derived a SFR=550--680 M${}_{o}dot/yrandanestimateofthedustmass,M$_dust=4.2 10^8 M_odot

6 Pages, 5 Figures, accepted for publication in MNRAS

References in corpus (26)

• The Great Observatories Origins Deep Survey: Initial Results From Optical and Near-Infrared Imaging
• Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
• Bayesian photometric redshift estimation
• SCUBA: A common-user submillimetre camera operating on the James Clerk Maxwell Telescope
• The obscured growth of massive black holes
• The Chandra Deep Field South: the 1 Million Second
• The Chandra Deep Field South: Optical Spectroscopy I
• The SCUBA Local Universe Galaxy Survey I: First Measurements of the Submillimetre Luminosity and Dust Mass Functions
• The SCUBA 8-mJy survey - I: Sub-millimetre maps, sources and number counts
• Black Hole Demographics from the M(BH)-sigma Relation
• Clustering of Submillimeter-Selected Galaxies
• Molecular Gas in the z=2.8 Submillimeter Galaxy SMM 02399-0136
• A Classic Type 2 QSO
• Spatially Resolved Millimeter Interferometry of SMMJ02399-0136: a Very Massive Galaxy at z=2.8
• Interferometric Observations of Powerful CO Emission from the three Submillimeter Galaxies at z=2.30, 2.51 and 3.35
• The Chandra Deep Field-North Survey. XIV. X-ray detected Obscured AGNs and Starburst Galaxies in the Bright Submm Source Population
• The ROSAT Deep Survey: VI. X-ray sources and Optical identifications of the Ultra Deep Survey
• Chandra Detection of a TypeII Quasar at z=3.288
• The evolutionary sequence of active galactic nuclei and galaxy formation revealed
• Testing the connection between the X-ray and submillimetre source populations using Chandra
• Submillimeter Evidence for the Coeval Growth of Massive Black Holes and Galaxy Bulges
• The coincidence and angular clustering of Chandra and SCUBA sources
• Submillimetre observations of luminous z>4 radio-quiet quasars and the contribution of AGN to the submm source population
• A hard X-ray constraint on the presence of an AGN in the ultra-luminous infrared galaxy Arp220
• The X-ray Properties of z>4 Quasars
• A filamentary structure of massive star-forming galaxies associated with an X-ray absorbed QSO at z=1.8

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• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• What Drives the Growth of Black Holes?
• The X-ray Spectral Properties of SCUBA Galaxies
• X-ray spectral properties of AGN in the Chandra Deep Field South
• The XMM-Newton Wide-Field Survey in the COSMOS field (XMM-COSMOS): demography and multiwavelength properties of obscured and unobscured luminous AGN
• CIV 1549 as an Eigenvector 1 Parameter for Active Galactic Nuclei
• Chandra and Spitzer unveil heavily obscured quasars in the SWIRE/Chandra Survey
• Weighing the Black Holes in z~2 Submillimeter-Emitting Galaxies Hosting Active Galactic Nuclei
• The LABOCA survey of the Extended Chandra Deep Field South: Two modes of star formation in AGN hosts?
• Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). II. Discovery of 32 Quasars and Luminous Galaxies at 5.7 < z < 6.8
• The MUSE-Wide Survey: Survey Description and First Data Release
• The Correlation of Narrow Line Emission and X-ray Luminosity in Active Galactic Nuclei
• The MUSE-Wide Survey: A first catalogue of 831 emission line galaxies
• A population of high-redshift type-2 quasars-I. Selection Criteria and Optical Spectra
• Estimating Black Hole Masses in Quasars Using Broad Optical and UV Emission Lines
• The X-ray emission of z>2.5 active galactic nuclei can be obscured by their host galaxies
• The distribution of absorption in AGN detected in the XMM-Newton observations of the CDFS
• The Radio Properties of Type 2 Quasars
• Dust and gas content of high-redshift galaxies hosting obscured AGN in the CDF-S
• The quest for Type 2 quasars: Chandra observations of luminous obscured quasars in the Sloan Digital Sky Survey
• The XMM deep survey in the CDF-S II. a 9-20 keV selection of heavily obscured active galaxies at z>1.7
• Chandra and Spitzer observations of CDFS X-ray obscured QSOs
• The HELLAS2XMM Survey. XII. The infrared/sub-millimeter view of an X-ray selected Type 2 quasar at z=2
• Obscured and powerful AGN and starburst activities at z~3.5
• The Cosmic History of Black Hole Growth from Deep Multiwavelength Surveys
• Hyperluminous starburst gives up its secrets
• 4C 39.29 - extended emission around a powerful Type 2 quasar
• Spectral Energy Distributions of type 2 QSOs: obscured star formation at high redshifts
• Submillimetre observations of X-ray active galactic nuclei in the William Herschel Deep Field
• Active Galactic Nuclei and their Role in Galaxy Evolution: The Infrared Perspective
• The possible detection of high redshift Type II QSOs in deep fields