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Title:
A Subaru Search for Lymanα Emitters at z = 5.8 with an Intermediate-Band Filter
Authors:
Ajiki, Masaru; Taniguchi, Yoshiaki; Fujita, Shinobu S.; Shioya, Yasuhiro; Nagao, Tohru; Murayama, Takashi; Yamada, Sanae F.; Umeda, Kazuyoshi; Sasaki, Shunji S.; Sumiya, Ryoko; Komiyama, Yutaka
Affiliation:
AA(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AB(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AC(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AD(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AE(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578 ; INAF -- Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy), AF(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AG(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AH(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AI(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AJ(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578), AK(Subaru Telescope, National Astronomical Observatory of Japan, 650 North A'ohoku Place, Hilo, HI 96720, USA)
Publication:
Publications of the Astronomical Society of Japan, Vol.56, No.4, pp. 597-603 (PASJ Homepage)
Publication Date:
08/2004
Origin:
PASJ
Keywords:
cosmology: early universe, cosmology: observations, galaxies: evolution, galaxies: formation
Bibliographic Code:
2004PASJ...56..597A

Abstract

We present the results of a survey for Lyα emitters at z ≍ 5.8 using a new intermediate-band filter centered at λc ≍ 8275 Å with ΔλFWHM ≍ 340 Å (i.e., spectroscopic resolution is R ≍ 24) and a combination with a traditional narrow-band centered at λc ≍ 8150 Å with ΔλFWHM ≍ 120 Å (R ≍ 68). Our observations were made using the Subaru Prime Focus Camera, Suprime-Cam, on the 8.2m Subaru telescope in a sky area surrounding the high-redshift quasar SDSSp J104433.04 ‑ 012522.2 at z = 5.74, covering an effective sky area of ≍ 720 arcmin2. In this survey, we have found four Ly α-emitter candidates from the intermediate-band image (z ≍ 5.8 with Δ z ≍ 0.3). Combined with our previous results based on the NB816 imaging, we discuss the star-formation activity in galaxies between z ≍ 5.7 and z ≍ 5.9.
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