2014/06/03 by Chris Simpson, Daniel Mortlock, D. Mortlock +10
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Hubble Deep Field #Hubble Ultra-Deep Field #Hubble space telescope #Luminosity #Luminosity function #Luminous infrared galaxy #Physics #Quasar #Redshift #Spitzer Space Telescope #Telescope #astro-ph.CO #astro-ph.GA
paper · pdf · doi:10.1093/mnras/stu1116
Accepted for publication in MNRAS, 8 pages
arxiv created 2014/06/03 · openalex publication_date 2014/07/02 · arxiv updated 2015/06/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 Lyα line is consistent with the previously observed evolution of the intergalactic medium at z > 5.5.