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Lyα emitters at redshift 5.7 in the COSMOS field

  • T. Murayama
  • , Y. Taniguchi
  • , N. Z. Scoville
  • , M. Ajiki
  • , D. B. Sanders
  • , B. Mobasher
  • , H. Aussel
  • , P. Capak
  • , A. Koekemoer
  • , Y. Shioya
  • , T. Nagao
  • , C. Carilli
  • , R. S. Ellis
  • , B. Garilli
  • , M. Giavalisco
  • , M. G. Kitzbichler
  • , O. Le Fèvre
  • , D. Maccagni
  • , E. Schinnerer
  • , V. Smolčić
  • S. Tribiano, A. Cimatti, Y. Komiyama, S. Miyazaki, S. S. Sasaki, J. Koda, H. Karoji
  • Tohoku University
  • Ehime University
  • California Institute of Technology
  • University of Hawai'i at Mānoa
  • Space Telescope Science Institute
  • CEA Saclay
  • National Astronomical Observatory of Japan (NAOJ)
  • Osservatorio Astrofisico Di Arcetri, Florence
  • National Science Foundation
  • Istituto di Astrofisica Spaziale e Fisica Cosmica di Bologna
  • Max Planck Institute for Astrophysics
  • LAM
  • Max Planck Institute for Astronomy
  • Princeton University
  • University of Zagreb
  • American Museum of Natural History
  • City University of New York

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

We present results from a narrowband optical survey of a contiguous area of 1.95 deg 2, covered by the Cosmic Evolution Survey (COSMOS). Both optical narrowband (λ c = 8150 Åand Δλ = 120 Å) and broadband (B, V, g′, r′, i′, and z′) imaging observations were performed with the Subaru prime-focus camera, Suprime-Cam on the Subaru Telescope. We provide the largest contiguous narrowband survey, targeting Lyα emitters (LAEs) atz s ≈ 5.7. We find a total of 119 LAE candidates at z ∼ 5.7. Over the wide-area covered by this survey, we find no strong evidence for large-scale clustering of LAEs. We estimate a star formation rate (SFR) density of ∼7 × 10 -4 M yr -1 Mpc -3 for LAEs at z ≈ 5.7 and compare it with previous measurements.

Original languageEnglish
Pages (from-to)523-544
Number of pages22
JournalAstrophysical Journal, Supplement Series
Volume172
Issue number1
DOIs
StatePublished - 2007

Keywords

  • Cosmology: observations
  • Early universe
  • Galaxies: evolution
  • Galaxies: formation

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