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Title:
An Intermediate-Band Imaging Survey for High-Redshift Lyman Alpha Emitters: The Mahoroba-11
Authors:
Yamada, Sanae F.; Sasaki, Shunji S.; Sumiya, Ryoko; Umeda, Kazuyoshi; Shioya, Yasuhiro; Ajiki, Masaru; Nagao, Tohru; Murayama, Takashi; Taniguchi, Yoshiaki
Affiliation:
AA(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AB(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AC(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AD(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AE(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578; ) AF(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AG(National Astronomical Observatory, 2-21-1 Osawa, Mitaka, Tokyo 181-8588; INAF -- Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy) AH(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AI(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578; )
Publication:
Publications of the Astronomical Society of Japan, Vol.57, No.6, pp. 881-903 (PASJ Homepage)
Publication Date:
12/2005
Origin:
PASJ
Keywords:
cosmology: early universe, cosmology: observations, galaxies: evolution, galaxies: formation
Bibliographic Code:
2005PASJ...57..881Y

Abstract

We present results of our intermediate-band optical imaging survey for high-z Lyα emitters (LAEs) using the 'focus camera, Suprime-Cam, on the 8.2m Subaru telescope. In our survey, we used eleven filters: four broad-band filters (B, RC, i', and z') and seven intermediate-band filters covering from 500nm to 720nm. We call this imaging program the Mahoroba-11. The seven intermediate-band filters were selected from a series of IA filters, which is the Suprime-Cam intermediate-band filter system, whose spectral resolution is R = 23. Our survey was made in a 34' × 27' sky area in the Subaru XMM Newton Deep Survey Field. We found 409 IA-excess objects, which provided us with a large photometric sample of strong emission-line objects. Applying the photometric redshift method to this sample, we obtained a new sample of 198 LAE candidates at 3 < z < 5. We found no evidence for evolutions of the number density and the star-formation rate density (SFRD) for LAEs with log L(Lyα)(erg s-1) > 42.67 between z ˜ 3 and z ˜ 5.
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