2019ApJ...883..142H

Query : 2019ApJ...883..142H

2019ApJ...883..142H - Astrophys. J., 883, 142-142 (2019/October-1)

SILVERRUSH. VIII. Spectroscopic identifications of early large-scale structures with protoclusters over 200 Mpc at z ∼ 6-7: strong associations of dusty star-forming galaxies.

HARIKANE Y., OUCHI M., ONO Y., FUJIMOTO S., DONEVSKI D., SHIBUYA T., FAISST A.L., GOTO T., HATSUKADE B., KASHIKAWA N., KOHNO K., HASHIMOTO T., HIGUCHI R., INOUE A.K., LIN Y.-T., MARTIN C.L., OVERZIER R., SMAIL I., TOSHIKAWA J., UMEHATA H., AO Y., CHAPMAN S., CLEMENTS D.L., IM M., JING Y., KAWAGUCHI T., LEE C.-H., LEE M.M., LIN L., MATSUOKA Y., MARINELLO M., NAGAO T., ONODERA M., TOFT S. and WANG W.-H.

Abstract (from CDS):

We have obtained three-dimensional maps of the universe in ∼200 x 200 x 80 comoving Mpc3 (cMpc3) volumes each at z = 5.7 and 6.6 based on a spectroscopic sample of 179 galaxies that achieves >=80% completeness down to the Lyα luminosity of log(LLyα/[ergs–1])=43.0, based on our Keck and Gemini observations and the literature. The maps reveal filamentary large-scale structures and two remarkable overdensities made out of at least 44 and 12 galaxies at z = 5.692 (z57OD) and z = 6.585 (z66OD), respectively, making z66OD the most distant overdensity spectroscopically confirmed to date, with >10 spectroscopically confirmed galaxies. We compare spatial distributions of submillimeter galaxies at z ≃ 4-6 with our z = 5.7 galaxies forming the large-scale structures, and detect a 99.97% signal of cross-correlation, indicative of a clear coincidence of dusty star-forming galaxy and dust-unobscured galaxy formation at this early epoch. The galaxies in z57OD and z66OD are actively forming stars with star-formation rates (SFRs) >=5 times higher than the main sequence, and particularly the SFR density in z57OD is 10 times higher than the cosmic average at the redshift (a.k.a. the Madau-Lilly plot). Comparisons with numerical simulations suggest that z57OD and z66OD are protoclusters that are progenitors of the present-day clusters with halo masses of ∼1014 M☉.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: formation - galaxies: high-redshift

Nomenclature: Table 1: [HOO2019b] z57LAE-NN (Nos 1-44). Table 2: [HOO2019b] z66LAE-NN (Nos 1-12).

CDS comments: Table 3: Not all protoclusters are in SIMBAD.

Simbad objects: 89

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Number of rows : 89
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 [OID2018] DRC cluster PCG 00 42 23.6 -33 43 38           ~ 28 0
2 NAME MRC 0052-241 Protocluster PCG 00 54 29.80 -23 51 32.0           ~ 5 0
3 NAME 6C0140 Protocluster ClG 01 43 43.8 +32 53 50           ~ 3 0
4 HSCS J021654-052155 EmG 02 16 54.600 -05 21 55.52           ~ 7 0
5 HSCS J021657-052117 EmG 02 16 57.89 -05 21 17.1           ~ 6 0
6 HSCS J021659-052305 EmG 02 16 59.940 -05 23 05.33           ~ 2 0
7 HSCS J021700-053130 EmG 02 17 00.62 -05 31 30.5           ~ 4 0
8 [HOO2019b] z57LAE-32 EmG 02 17 01.130 -05 29 28.40           ~ 1 0
9 HSCS J021701-051841 EmG 02 17 01.430 -05 18 41.68           ~ 2 0
10 [HOO2019] HSC-z6PCC3 C?G 02 17.0 -04 19           ~ 2 0
11 HSCS J021704-052714 EmG 02 17 04.30 -05 27 14.4           ~ 7 0
12 [HOO2019b] z57LAE-29 EmG 02 17 05.64 -05 32 17.7           ~ 3 0
13 HSCS J021707-053426 EmG 02 17 07.87 -05 34 26.8           ~ 6 0
14 HSCS J021707-052723 EmG 02 17 07.960 -05 27 23.16           ~ 2 0
15 HSCS J021709-052731 EmG 02 17 09.51 -05 27 31.7           ~ 4 0
16 HSCS J021709-052646 EmG 02 17 09.950 -05 26 46.53           ~ 4 0
17 HSCS J021713-053558 EmG 02 17 13.810 -05 35 58.23           ~ 2 0
18 HSCS J021714-053502 EmG 02 17 14.930 -05 35 02.77           ~ 2 0
19 [HOO2019b] z57LAE-30 EmG 02 17 15.530 -05 32 14.04           ~ 1 0
20 [HOO2019b] z57LAE-28 EmG 02 17 16.100 -05 34 24.23           ~ 2 0
21 HSCS J021722-052805 EmG 02 17 22.28 -05 28 05.4           ~ 4 0
22 HSCS J021724-053309 EmG 02 17 24.04 -05 33 09.7           ~ 8 0
23 HSCS J021729-053028 EmG 02 17 29.180 -05 30 28.50           ~ 3 0
24 HSCS J021734-053452 EmG 02 17 34.17 -05 34 52.9           ~ 5 0
25 HSCS J021736-052701 EmG 02 17 36.39 -05 27 01.8           ~ 6 0
26 HSCS J021736-053027 EmG 02 17 36.680 -05 30 27.57           ~ 3 0
27 HSCS J021738-053048 EmG 02 17 38.280 -05 30 48.70           ~ 2 0
28 [HOO2019] HSC-z6PCC1 PCG 02 17.7 -05 32           ~ 9 0
29 HSCS J021742-052810 EmG 02 17 42.170 -05 28 10.55           ~ 4 0
30 HSCS J021745-052842 EmG 02 17 45.033 -05 28 42.47           ~ 9 0
31 [HOO2019b] z57LAE-38 EmG 02 17 45.190 -05 25 57.75           ~ 1 0
32 HSCS J021745-052936 EmG 02 17 45.270 -05 29 36.10           ~ 14 0
33 [HOO2019b] z57LAE-6 EmG 02 17 48.190 -05 28 51.92           ~ 1 0
34 HSCS J021748-053127 EmG 02 17 48.477 -05 31 27.02           ~ 10 0
35 HSCS J021749-052854 EmG 02 17 49.132 -05 28 54.18           ~ 11 0
36 HSCS J021749-052708 EmG 02 17 50.005 -05 27 08.19           ~ 10 0
37 HSCS J021751-053003 EmG 02 17 51.154 -05 30 03.62           ~ 7 0
38 HSCS J021752-053511 EmG 02 17 52.65 -05 35 11.8           ~ 6 0
39 HSCS J021755-053027 EmG 02 17 55.830 -05 30 26.94           ~ 2 0
40 [HOO2019b] z66LAE-11 EmG 02 17 56.420 -05 16 37.96           ~ 1 0
41 HSCS J021757-050414 EmG 02 17 56.990 -05 04 14.33           ~ 2 0
42 CANDELS UDS F160W J021757.30-051556.5 EmG 02 17 57.3029 -05 15 56.499           ~ 8 0
43 NAME Himiko EmG 02 17 57.6122 -05 08 44.898           ~ 113 0
44 HSCS J021757-053309 EmG 02 17 57.67 -05 33 09.5           ~ 5 0
45 [HOO2019b] z57LAE-25 EmG 02 17 58.090 -05 35 15.35           ~ 1 0
46 HSCS J021800-050346 EmG 02 18 00.230 -05 03 46.73           ~ 2 0
47 HSCS J021800-053518 EmG 02 18 00.700 -05 35 18.92           ~ 4 0
48 HSCS J021800-050330 EmG 02 18 00.790 -05 03 30.25           ~ 2 0
49 HSCS J021802-052011 EmG 02 18 02.19 -05 20 11.5           ~ 5 0
50 HSCS J021803-052643 EmG 02 18 03.870 -05 26 43.45           ~ 7 0
51 HSCS J021804-052147 EmG 02 18 04.170 -05 21 47.25           ~ 7 0
52 HSCS J021805-052704 EmG 02 18 05.170 -05 27 04.06           ~ 7 0
53 HSCS J021805-052027 EmG 02 18 05.280 -05 20 26.90           ~ 7 0
54 [HOO2019b] z66LAE-5 EmG 02 18 18.730 -05 04 12.96           ~ 1 0
55 HSCS J021819-050900 EmG 02 18 19.3797 -05 09 00.550           ~ 6 0
56 HSCS J021820-051109 EmG 02 18 20.6670 -05 11 09.664           ~ 6 0
57 HSCS J021826-050726 EmG 02 18 26.9734 -05 07 26.828           ~ 4 0
58 HSCS J021827-050629 EmG 02 18 27.950 -05 06 29.89           ~ 2 0
59 HSCS J021828-051423 EmG 02 18 28.870 -05 14 23.01           ~ 5 0
60 HSCS J021830-051457 EmG 02 18 30.530 -05 14 57.81           ~ 5 0
61 [HOO2019] HSC-z7PCC24 PCG 02 18.5 -05 07           ~ 6 0
62 [HOO2019] HSC-z7PCC26 PCG 02 18.6 -04 34           ~ 3 0
63 HSCS J021843-050915 EmG 02 18 43.620 -05 09 15.63           ~ 6 0
64 [HOO2019] HSC-z6PCC4 C?G 02 20.6 -04 51           ~ 2 0
65 [TKO2016] D1UD01 PCG? 02 24 35.40 -04 19 58.9           ~ 3 0
66 ClG J0227-0421 PCG 02 27.0 -04 21           ~ 12 0
67 NAME MRC 0316-257 Protocluster PCG 03 18 12.00 -25 35 09.0           ~ 8 0
68 [DLR2016] PC 217.96+32.3 PCG 08 56.3 +10 15           ~ 11 0
69 NAME MRC 0943-242 Protocluster PCG 09 45 32.8 -24 28 49           ~ 7 0
70 [HOO2019] HSC-z6PCC5 C?G 09 59.8 +01 36           ~ 2 0
71 [DLL2015b] protocluster ClG 10 00 00.12 +02 14 28.8           ~ 4 0
72 NAME COSMOS AZtec 3 Cluster ClG 10 00 20.7 +02 35 20           ~ 17 0
73 NAME Taralay Protocluster PCG 10 01 24.80 +02 20 16.6           ~ 26 0
74 [HOO2019] HSC-z7PCC4 C?G 10 03.8 +02 47           ~ 2 0
75 NAME MRC 1138-262 Protocluster PCG 11 40 48.4 -26 29 11           ~ 91 0
76 [TKO2012] protocluster PCG 13 24 26.5 +27 15 59           ~ 7 1
77 NAME TN 1338 Protocluster PCG 13 38 26.05 -19 42 30.5           ~ 8 0
78 [BYB2017] Bootes J1430+3522 C?G 14 30.0 +35 22           ~ 2 0
79 NAME LABd05 EmO 14 34 10.988 +33 17 32.71           ~ 34 1
80 NAME HS 1549 Protocluster PCG 15 51 50.0 +19 11 00           ~ 9 0
81 NAME USS 1558-003 Protocluster PCG 16 01 17.0 -00 28 48           ~ 26 0
82 NAME HS 1700 Protocluster PCG 17 01.0 +64 12           ~ 38 0
83 CCPC-z31-005 PCG 20 09 54.430 -30 41 19.68           ~ 4 0
84 NAME 4C 23.56 Protocluster PCG 21 07 14.82 +23 31 45.0           ~ 11 0
85 ClG J2143-4423 ClG 21 43 -44.4           ~ 18 0
86 [TKO2016] D4UD01 PCG? 22 14 03.40 -17 58 43.4           ~ 4 0
87 [TKO2016] D4GD01 PCG 22 16 51.37 -17 18 24.6           ~ 4 0
88 NAME SSA22 Protocluster PCG 22 17 34.0 +00 17 01           ~ 175 0
89 SPT-CL J2349-5638 PCG 23 49.0 -56 38           ~ 47 0

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