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The galaxy environment of a QSO at z ~ 5.7

Published online by Cambridge University Press:  25 July 2014

E. Bañados ,
B. P. Venemans ,
Fabian Walter ,
Jaron Kurk ,
Roderik Overzier  and
Masami Ouchi
E. Bañados
Affiliation:
Max Planck Institut für Astronomie, Königstuhl 17, 69117, Heidelberg, Germany email: banados@mpia.de
B. P. Venemans
Affiliation:
Max Planck Institut für Astronomie, Königstuhl 17, 69117, Heidelberg, Germany email: banados@mpia.de
Fabian Walter
Affiliation:
Max Planck Institut für Astronomie, Königstuhl 17, 69117, Heidelberg, Germany email: banados@mpia.de
Jaron Kurk
Affiliation:
Max Planck Institut für Extraterrestrische Physik, Giessenbachstrasse, 68165, Garching, Germany
Roderik Overzier
Affiliation:
Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USA Observatório Nacional, Rua José Cristino, 77. CEP 20921-400, São Cristóvão, Rio de Janeiro-RJ, Brazil
Masami Ouchi
Affiliation:
Institute for Cosmic Ray Research, University of Tokyo, Kashiwa 277-8582, Japan Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8583, Japan
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Abstract

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High-redshift quasars are thought to reside in the most massive halos in the early universe and should therefore be located in fields with overdensities of galaxies, which are expected to evolve into galaxy clusters seen in the local Universe. In Bañados et al. (2013), we used deep narrow-band imaging to study the environment of the z=5.72 quasar ULAS J0203 + 0012. The redshift range probed by our narrow band selection is Δz ~ 0.1. This was the first time that Lyman alpha emitters (LAEs) were searched for near a z ~ 6 quasar, to provide clues on the surroundings of quasars at the end of the epoch of reionization. The main result of this work is that no enhancement of LAEs has been found in the surroundings of ULAS J0203 + 0012. We discuss different explanations and interpretations for this non-detection of a galaxy overdensity.

Keywords

galaxies: formation — galaxies: high redshift — quasars: individual (ULAS J0203 + 0012)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 341 - 342
Copyright
Copyright © International Astronomical Union 2014 

References

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