Lyα Emitters at Redshift 5.7 in the COSMOS Field

Murayama, T. and Taniguchi, Y. and Scoville, N. Z. and Ajiki, M. and Sanders, D. B. and Mobasher, B. and Aussel, H. and Capak, P. and Koekemoer, A. and Shioya, Y. and Nagao, T. and Carilli, C. and Ellis, R. S. and Garilli, B. and Giavalisco, M. and Kitzbichler, M. G. and Le Fèvre, O. and Maccagni, D. and Schinnerer, E. and Smolčić, Vernesa and Tribiano, S. and Cimatti, A. and Komiyama, Y. and Miyazaki, S. and Sasaki, S. S. and Koda, J. and Karoji, H. (2007) Lyα Emitters at Redshift 5.7 in the COSMOS Field. Astrophysical Journal Supplement Series, 172 (1). pp. 523-544. ISSN 0067-0049

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We present results from a narrowband optical survey of a contiguous area of 1.95 deg2, covered by the Cosmic Evolution Survey (COSMOS). Both optical narrowband (λc = 8150 Å and 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) at z ≈ 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.

Item Type: Article
Keywords: cosmology: observations — early universe — galaxies: evolution — galaxies: formation
Date: 2007
Subjects: NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Additional Information: © 2007 American Astronomical Society. Received 2006 September 21; accepted for publication 2007 February 14; published 2007 September. Based on data collected at the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.
Divisions: Faculty of Science > Department of Physics
Publisher: IOP Publishing
Depositing User: Vernesa Smolčić
Date Deposited: 22 Apr 2015 14:30
Last Modified: 22 Apr 2015 14:30

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