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Title:
New Corroborative Evidence for the Overdensity of Galaxies around the Radio-Loud Quasar SDSS J0836+0054 at z = 5.8
Authors:
Ajiki, Masaru; Taniguchi, Yoshiaki; Murayama, Takashi; Shioya, Yasuhiro; Nagao, Tohru; Sasaki, Shunji S.; Hatakeyama, Yuichiro; Morioka, Taichi; Yokouchi, Asuka; Takahashi, Mari I.; Koizumi, Osamu
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(INAF, Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy; National Astronomical Observatory, Osawa, Mitaka, Tokyo 181-8588) AF(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AG(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) 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) AJ(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578) AK(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578)
Publication:
Publications of the Astronomical Society of Japan, Vol.58, No.3, pp.499-502 (PASJ Homepage)
Publication Date:
06/2006
Origin:
PASJ
Language:
58
Keywords:
cosmology: early universe, cosmology: observations, galaxies: evolution, galaxies: formation
Bibliographic Code:
2006PASJ...58..499A

Abstract

Recently, Zheng et al. (2006) found evidence for an overdensity of galaxies around a radio-loud quasar, SDSS J0836+0054, at z = 5.8 (a 5 arcmin² field). We examined our deep optical imaging data (B, V, r', i', z', and NB816) taken with the Suprime-Cam on the Subaru Telescope. The NB816 narrow-band filter (λc = 815 and Δλ = 12nm) is suitable to search for Lyα emitters at z ≈ 5.7. We found a new strong Lyα emitter at z ≈ 5.7 close to object B, identified by Zheng et al. (2006). Further, the non-detection of nine objects selected by Zheng et al. (2006) in our B, V, and r' images provides corroborative evidence to indicate that they are high-z objects.
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