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. SmolčićS. Tribiano, A. Cimatti, Y. Komiyama, S. Miyazaki, S. S. Sasaki, J. Koda, H. Karoji

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90 Citations (Scopus)


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
Issue number1
Publication statusPublished - 2007


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


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