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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6
Publications of the Astronomical Society of Japan, Volume 57, No. 1, Year 2005
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Description
We present new results of a deep optical imaging survey using a narrow band filter (NB921) centered at λ = 9196 Å together with B, V, R, i′, and z′ broadband filters in the sky area of the Subaru Deep Field, which has been promoted as one of legacy programs of the 8.2m Subaru Telescope. We obtained a photometric sample of 58 Ly α emitter candidates at z ≈ 6.5-6.6 among ∼ 180 strong NB921-excess (z′ - NB921 > 1.0) objects together with a color criterion of i′ - z′ > 1.3. We then obtained optical spectra of 20 objects in our NB921-excess sample, and identified at least nine Ly α emitters at z ∼ 6.5-6.6, including the two emitters reported by Kodaira et al. (2003, PASJ, 55, L17). Since our Ly α-emitter candidates are free from strong amplification of gravitational lensing, we are able to discuss their observational properties from a statistical point of view. Based on these new results, we obtained a lower limit of the star-formation rate density of ρSFR ≃ 5.7 × 10-4 h0.7 M⊙ yr-1 Mpc-3 at z ≈ 6.6, being consistent with our previous estimate. We discuss the nature of star-formation activity in galaxies beyond z = 6. © 2005. Astronomical Society of Japan.
Authors & Co-Authors
Taniguchi, Yoshiaki
Japan, Sendai
Tohoku University
Nagao, Tohru
Japan, Sendai
Tohoku University
Italy, Rome
Istituto Nazionale Di Astrofisica, Rome
Kashikawa, Nobunari
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Karoji, Hiroshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Akiyama, Masayuki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Aoki, Kentaro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Doi, Mamoru
Japan, Tokyo
The University of Tokyo
Furusawa, Hisanori
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kobayashi, Naoto
Japan, Tokyo
The University of Tokyo
Kodama, Tadayuki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Matsuda, Yuichl
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Sendai
Tohoku University
Miyazaki, Satoshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Morokuma, Tomoki
Japan, Tokyo
The University of Tokyo
Motohara, Kentaro
Japan, Tokyo
The University of Tokyo
Ohta, Kouji
Japan, Kyoto
Kyoto University
Okamura, Sadanori
Japan, Tokyo
The University of Tokyo
Ouchi, Masami
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Sekiguchi, Kazuhiro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Shimasaku, Kazuhiro
Japan, Tokyo
The University of Tokyo
Yasuda, Naoki
Japan, Tokyo
The University of Tokyo
Yoshida, Michitoshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Statistics
Citations: 222
Authors: 21
Affiliations: 8
Identifiers
Doi:
10.1093/pasj/57.1.165
ISSN:
00046264
Study Design
Cross Sectional Study
Study Approach
Quantitative