An overdensity of Lyα emitters at redshift z ≈ 5.7 near the hubble ultra deep field

J. X. Wang, S. Malhotra, J. E. Rhoads

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We have identified an obvious and strong large-scale structure at redshift z ≈ 5.75 in a wide (31′ × 33′) field, narrowband survey of the Chandra Deep Field-South region. This structure is traced by 17 candidate Lyα emitters, among which 12 are found in an 823 nm filter (corresponding to Lyα at z = 5.77 ± 0.03) and five in an 815 nm image (z = 5.70 ± 0.03). The Lyα emitters in both redshift bins are concentrated in one quadrant of the field. The Hubble Ultra Deep Field, the Chandra Deep Field-South, and the Great Observatories Origins Deep Survey-South fields all lie near the edge of this overdensity region. Our results are consistent with reports of an overdensity in the Ultra Deep Field region at z ≈ 5.9. This structure is the highest redshift overdensity found so far.

Original languageEnglish (US)
Pages (from-to)L77-L80
JournalAstrophysical Journal
Issue number2 II
StatePublished - Apr 1 2005


  • Cosmology: observations
  • Galaxies: evolution
  • Galaxies: high-redshift
  • Large-scale structure of universe

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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