Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 442, Issue 4, Pages 3454-3461Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu1116
Keywords
galaxies: active; galaxies: formation; galaxies: high redshift; quasars: individual: ULAS J1120+0641; dark ages, reionization, first stars
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Funding
- NSF [AST-1010004]
- NASA HST [GO-13033.06-A]
- ERC
- NASA [NAS 5-26555]
- NASA through a grant from the Space Telescope Science Institute
- Science and Technology Facilities Council [ST/M000095/1, ST/L001381/1, ST/M003035/1, ST/K001051/1, ST/H00243X/1] Funding Source: researchfish
- STFC [ST/L001381/1, ST/K001051/1, ST/M000095/1, ST/M003035/1] Funding Source: UKRI
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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 similar to 2. This is consistent with the field luminosity function and indicates that there is no excess of > La similar to... galaxies within 1 Mpc of the quasar. A detection of the quasar shortwards of the Ly alpha line is consistent with the previously observed evolution of the intergalactic medium at z > 5.5.
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