2016ApJ...817..158F

Query : 2016ApJ...817..158F

2016ApJ...817..158F - Astrophys. J., 817, 158 (2016/February-1)

The candidate cluster and protocluster catalog (CCPC) of spectroscopically identified structures spanning 2.74 < z < 3.71.

FRANCK J.R. and McGAUGH S.S.

Abstract (from CDS):

We developed a search methodology to identify galaxy protoclusters at z > 2.74 and implemented it on a sample of ∼14,000 galaxies with previously measured redshifts. The results of this search are recorded in the Candidate Cluster and Protocluster Catalog (CCPC). The catalog contains 12 clusters that are highly significant overdensities (δgal > 7), 6 of which were previously known. We also identify another 31 candidate protoclusters (including four previously identified structures) of lower overdensities. CCPC systems vary over a wide range of physical sizes and shapes, from small, compact groups to large, extended, and filamentary collections of galaxies. This variety persists in the range from z = 3.71 to z = 2.74. These structures exist as galaxy overdensities (δgal) with a mean value of 2, similar to the values found for other protoclusters in the literature. The median number of galaxies for CCPC systems is 11. Virial mass estimates are large for these redshifts, with 13 cases apparently having M > 1015M☉. If these systems are virialized, such masses would pose a challenge to ΛCDM.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: high-redshift

Nomenclature: Tables 1-2: CCPC-zZz-NNN N=12+31 among (Nos CCPC-z27-001 and CCPC-z37-001).

Simbad objects: 45

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Number of rows : 45
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 CCPC-z35-001 ClG 00 03 25.120 -26 04 52.68           ~ 2 0
2 CCPC-z28-004 C?G 00 54 28.560 -23 53 49.20           ~ 1 0
3 CCPC-z33-004 C?G 01 06 04.60 -25 46 54.0           ~ 1 0
4 CCPC-z31-004 C?G 01 06 11.530 -25 46 14.52           ~ 2 0
5 CCPC-z33-002 C?G 02 03 35.130 +11 38 06.68           ~ 2 0
6 CCPC-z36-001 ClG 02 03 49.520 +11 35 53.48           ~ 2 0
7 CCPC-z27-002 ClG 02 21 19.920 -04 27 43.20           ~ 2 0
8 CCPC-z29-006 C?G 02 58 53.070 +00 09 53.60           ~ 1 0
9 CCPC-z32-002 ClG 02 59 04.160 +00 12 35.60           ~ 2 0
10 CCPC-z28-003 C?G 02 59 05.760 +00 11 27.60           ~ 1 0
11 CCPC-z28-007 C?G 03 04 41.130 -00 10 38.78           ~ 1 0
12 CCPC-z27-003 C?G 03 04 42.000 -00 07 40.80           ~ 1 0
13 CCPC-z31-003 ClG 03 18 07.580 -25 34 55.56           ~ 2 0
14 CCPC-z37-001 C?G 03 32 10.420 -27 40 53.04           ~ 2 0
15 CCPC-z28-002 C?G 03 32 14.400 -27 52 37.20           ~ 1 0
16 CCPC-z36-002 C?G 03 32 16.900 -27 48 38.16           ~ 2 0
17 CCPC-z34-002 C?G 03 32 18.480 -27 52 06.60           ~ 3 0
18 CCPC-z29-007 C?G 03 32 19.290 -27 43 03.14           ~ 1 0
19 CCPC-z31-001 C?G 03 32 24.310 -27 41 52.44           ~ 1 0
20 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1
21 CCPC-z32-003 C?G 03 32 34.540 -27 46 12.36           ~ 2 0
22 CCPC-z33-003 C?G 03 32 34.900 -27 47 08.16           ~ 2 0
23 CCPC-z28-006 C?G 03 32 38.170 -27 47 08.16           ~ 1 0
24 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1900 0
25 CCPC-z31-002 C?G 04 22 18.530 -38 45 15.48           ~ 1 0
26 CCPC-z29-001 ClG 09 33 35.710 +28 44 45.89           ~ 2 0
27 CCPC-z29-002 ClG 09 45 32.760 -24 29 05.28           ~ 2 0
28 CCPC-z32-001 C?G 12 05 19.100 -07 42 31.00           ~ 1 0
29 CCPC-z30-001 ClG 12 08 06.670 -30 31 05.16           ~ 2 0
30 CCPC-z31-007 C?G 12 36 47.350 +62 15 12.74           ~ 1 0
31 CCPC-z29-004 C?G 12 36 47.710 +62 12 55.80           ~ 1 0
32 CCPC-z33-001 C?G 12 36 50.740 +62 13 49.51           ~ 1 0
33 CCPC-z27-004 C?G 12 36 51.840 +62 11 56.40           ~ 1 0
34 CCPC-z34-001 C?G 12 36 52.420 +62 13 37.74           ~ 1 0
35 CCPC-z31-006 C?G 13 49 06.700 -03 36 32.00           ~ 1 0
36 CCPC-z29-003 C?G 14 18 04.130 +52 29 54.28           ~ 1 0
37 CCPC-z30-002 C?G 14 24 30.290 +22 52 49.91           ~ 1 0
38 CCPC-z28-001 C?G 14 24 34.080 +22 49 04.80           ~ 1 0
39 CCPC-z29-005 C?G 14 24 45.910 +22 56 42.11           ~ 1 0
40 CCPC-z27-001 C?G 17 01 03.840 +64 11 56.40           ~ 1 0
41 CCPC-z31-005 PCG 20 09 54.430 -30 41 19.68           ~ 4 0
42 CCPC-z28-005 C?G 21 41 59.760 -44 13 26.40           ~ 1 0
43 CCPC-z30-003 ClG 22 17 25.920 +00 12 37.58           ~ 2 0
44 CCPC-z27-005 C?G 22 32 48.960 -60 31 55.20           ~ 1 0
45 CCPC-z33-005 C?G 22 39 38.450 +11 54 09.61           ~ 1 0

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