TY - JOUR
T1 - The discovery of primeval large-scale structures with forming clusters at redshift
AU - Ouchi, Masami
AU - Shimasaku, Kazuhiro
AU - Akiyama, Masayuki
AU - Sekiguchi, Kazuhiro
AU - Furusawa, Hisanori
AU - Okamura, Sadanori
AU - Kashikawa, Nobunari
AU - Iye, Masanori
AU - Kodama, Tadayuki
AU - Saito, Tomoki
AU - Sasaki, Toshiyuki
AU - Simpson, Chris
AU - Takata, Tadafumi
AU - Yamada, Toru
AU - Yamanoi, Hitomi
AU - Yoshida, Makiko
AU - Yoshida, Michitoshi
N1 - Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2005/2/10
Y1 - 2005/2/10
N2 - We report the discovery of primeval large-scale structures (LSSs) including two protoclusters in a forming phase at z = 5.7. We carried out extensive deep narrowband imaging in the 1 deg2 sky of the Subaru/XMM-Newton Deep Field and obtained a cosmic map of 515 Lyα emitters (LAEs) in a volume with a transverse dimension of 180 Mpc × 180 Mpc and a depth of ∼40 Mpc in comoving units. This cosmic map shows filamentary LSSs, including clusters and surrounding 10-40 Mpc scale voids, similar to the present-day LSSs. Our spectroscopic follow-up observations identify overdense regions in which two dense clumps of LAEs with a sphere of 1 Mpc diameter in physical units are included. These clumps show about 130 times higher star formation rate density, mainly due to a large overdensity, ∼80, of LAEs. These clumps would be clusters in a formation phase involving a burst of galaxy formation.
AB - We report the discovery of primeval large-scale structures (LSSs) including two protoclusters in a forming phase at z = 5.7. We carried out extensive deep narrowband imaging in the 1 deg2 sky of the Subaru/XMM-Newton Deep Field and obtained a cosmic map of 515 Lyα emitters (LAEs) in a volume with a transverse dimension of 180 Mpc × 180 Mpc and a depth of ∼40 Mpc in comoving units. This cosmic map shows filamentary LSSs, including clusters and surrounding 10-40 Mpc scale voids, similar to the present-day LSSs. Our spectroscopic follow-up observations identify overdense regions in which two dense clumps of LAEs with a sphere of 1 Mpc diameter in physical units are included. These clumps show about 130 times higher star formation rate density, mainly due to a large overdensity, ∼80, of LAEs. These clumps would be clusters in a formation phase involving a burst of galaxy formation.
KW - Galaxies: clusters: general
KW - Galaxies: formation
KW - Large-scale structure of universe
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U2 - 10.1086/428499
DO - 10.1086/428499
M3 - Article
AN - SCOPUS:20144387505
VL - 620
SP - L1-L4
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1 II
ER -