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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 709768.0, MPI für Astronomie / Publikationen_mpia
No excess of bright galaxies around the redshift 7.1 quasar ULAS J1120+0641
Authors:Simpson, C.; Mortlock, D.; Warren, S.; Cantalupo, S.; Hewett, P.; McLure, R.; McMahon, R.; Venemans, B.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:Monthly Notices of the Royal Astronomical Society
Volume:442
Issue / Number:4
Start Page:3454
End Page:3461
Audience:Not Specified
Abstract / Description:We present optical and near-infrared imaging of the field of the z = 7.0842 quasar ULAS J112001.48+064124.3 taken with the Hubble Space Telescope. We use these data to search for galaxies that may be physically associated with the quasar, using the Lyman break technique, and find three such objects, although the detection of one in Spitzer Space Telescope imaging strongly suggests it lies at z ˜ 2. This is consistent with the field luminosity function and indicates that there is no excess of >L* galaxies within 1 Mpc of the quasar. A detection of the quasar shortwards of the Lyalpha line is consistent with the previously observed evolution of the intergalactic medium at z > 5.5.
Free Keywords:galaxies: active; galaxies: formation; galaxies: high redshift; quasars: individual: ULAS J1120+0641; dark ages; reionization; first stars
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0035-8711 %R 10.1093/mnras/stu1116
URL:http://cdsads.u-strasbg.fr/abs/2014MNRAS.442.3454S
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