2005ApJ...620L...1O

Query : 2005ApJ...620L...1O

2005ApJ...620L...1O - Astrophys. J., 620, L1-L4 (2005/February-2)

The discovery of primeval large-scale structures with forming clusters at redshift 6.

OUCHI M., SHIMASAKU K., AKIYAMA M., SEKIGUCHI K., FURUSAWA H., OKAMURA S., KASHIKAWA N., IYE M., KODAMA T., SAITO T., SASAKI T., SIMPSON C., TAKATA T., YAMADA T., YAMANOI H., YOSHIDA M. and YOSHIDA M.

Abstract (from CDS):

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 Mpcx180 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.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Clusters: General - Galaxies: Formation - Cosmology: Large-Scale Structure of Universe

Nomenclature: Fig.4: [OSA2005] Region A (Nos A-B). Table 1: [OSA2005] JHHMMSS.ss+DDMMSS.s N=22.

Simbad objects: 25

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Number of rows : 25
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [JWB2018] LAE 21 EmG 02 17 43.312 -05 31 35.01           ~ 4 0
2 HSCS J021743-052807 EmG 02 17 43.353 -05 28 07.08           ~ 5 0
3 HSCS J021745-052842 EmG 02 17 45.033 -05 28 42.47           ~ 9 0
4 HSCS J021745-052936 EmG 02 17 45.270 -05 29 36.10           ~ 14 0
5 [OSA2005] J021745.88-052714.5 EmO 02 17 45.88 -05 27 14.5           ~ 1 0
6 [OSA2005] Region A reg 02 17 47.2 -05 28 40           ~ 3 0
7 [OSA2005] J021747.32-052648.0 EmO 02 17 47.32 -05 26 48.0           ~ 3 0
8 HSCS J021748-053127 EmG 02 17 48.477 -05 31 27.02           ~ 10 0
9 HSCS J021749-052854 EmG 02 17 49.132 -05 28 54.18           ~ 11 0
10 HSCS J021749-052708 EmG 02 17 50.005 -05 27 08.19           ~ 10 0
11 [OSA2005] J021751.14-052935.3 EmO 02 17 51.14 -05 29 35.3           ~ 1 0
12 NAME SXDSF reg 02 18 00 -05 00.0           ~ 237 1
13 HSCS J021814-053249 EmG 02 18 14.434 -05 32 49.12           ~ 6 0
14 HSCS J021817-053222 EmG 02 18 17.352 -05 32 22.83           ~ 5 0
15 [JWB2018] LAE 44 EmG 02 18 19.134 -05 33 11.69           ~ 4 0
16 [OSA2005] Region B reg 02 18 19.6 -05 32 52           ~ 1 0
17 [OSA2005] J021820.88-053321.9 EmO 02 18 20.88 -05 33 21.9           ~ 1 0
18 [JWB2018] LAE 45 EmG 02 18 22.612 -05 33 37.81           ~ 4 0
19 [OSA2005] J022012.84-045022.5 EmO 02 20 12.84 -04 50 22.5           ~ 1 0
20 [OSA2005] J022013.36-045109.3 EmO 02 20 13.359 -04 51 09.30           ~ 2 0
21 [OSA2005] J022019.79-045229.9 EmO 02 20 19.79 -04 52 29.9           ~ 1 0
22 [NJZ2020] 126 EmG 02 20 21.570 -04 53 14.48           ~ 4 0
23 [OSA2005] J022026.14-045234.3 EmO 02 20 26.138 -04 52 34.30           ~ 2 0
24 [OSA2005] J022012.15-044950.7 EmO ~ ~           ~ 1 0
25 [OSA2005] J021823.82-053205.3 EmO ~ ~           ~ 1 0

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