2004A&A...428..793K

Query : 2004A&A...428..793K

2004A&A...428..793K - Astronomy and Astrophysics, volume 428793-815 (2004/12-4)

A search for clusters at high redshift. III. Candidate Hα emitters and EROs in the PKS 1138-262 proto-cluster at z=2.16.

KURK J.D., PENTERICCI L., ROETTGERING H.J.A. and MILEY G.K.

Abstract (from CDS):

In this paper we present deep VLT multi wavelength imaging observations of the field around the radio galaxy PKS 1138-262 aimed at detecting and studying a (potential) proto-cluster centered at this radio source. PKS 1138-262 is a massive galaxy at z=2.16, located in a dense environment as indicated by optical, X-ray and radio observations. We had already found an over-density of Lyα emitting galaxies in this field, consistent with a proto-cluster structure associated with the radio galaxy. In addition, we find 40 candidate Hα emitters that have nominal rest frame equivalent width >25Å within 1.8Mpc and 2000km/s of the radio galaxy. Furthermore, we find 44 objects with I-K>4.3. This number of extremely red objects (EROs) is about twice the number found in blank field ERO surveys, suggesting that some EROs in this field are part of the proto-cluster. The density of Hα emitters and extremely red objects increases towards the radio galaxy, indicating a physical association. From comparisons with other K band, ERO, Hα and Lyα surveys, we conclude that PKS 1138-262 is located in a density peak which will evolve into a cluster of galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: active - galaxies: clusters: general - galaxies: evolution - cosmology: observations - cosmology: early Universe

Nomenclature: Table A1: [KPR2004] HA NNN N=40 among (Nos 5-477). Table A2: [KPR2004] LyA NNNN N=40 among (Nos 28-1017). Table A3: [KPR2004] ERO NNN N=44 among (Nos 53-531).

Simbad objects: 137

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Number of rows : 137
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 PHL 957 QSO 01 03 11.2741573824 +13 16 17.809871484   16.97 16.57     ~ 350 0
2 4C 41.17 rG 06 50 52.098 +41 30 30.53           ~ 349 1
3 ClG J0848+4453 ClG 08 48 34.800 +44 53 41.90           ~ 124 1
4 ClG J0849+4452 ClG 08 48 58.8 +44 51 53           ~ 107 1
5 ClG J0910+5422 ClG 09 10 44.9 +54 22 09           ~ 94 0
6 GD 108 HS* 10 00 47.2462375824 -07 33 30.773994012 12.406 13.349 13.563 13.662 13.781 sdB 150 1
7 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 458 0
8 [KPR2004] LyA 46 EmG 11 40 33.8800 -26 32 13.100   25.5       ~ 3 0
9 [KPR2004] LyA 184 EmG 11 40 36.6 -26 31 04   24.9       ~ 2 0
10 [KPR2004] LyA 728 EmG 11 40 36.84 -26 28 03.1   23.7       ~ 4 0
11 [KPR2004] LyA 361 Sy1 11 40 36.9 -26 30 09   25.0       ~ 4 0
12 [KPR2004] LyA 54 EmG 11 40 37.14 -26 32 08.2   24.5       ~ 3 0
13 [KPR2004] LyA 73 EmG 11 40 37.8 -26 31 55   25.7       ~ 2 0
14 [DTD2010] MRC 1138-262 364 Sy1 11 40 39.72 -26 28 45.2   24.2     22.87 ~ 13 0
15 [KPR2004] LyA 980 EmG 11 40 42.3 -26 28 51   26.3       ~ 2 0
16 [KPR2004] HA 132 EmO 11 40 42.4 -26 29 43           ~ 1 0
17 [KPR2004] HA 144 EmG 11 40 43.42 -26 29 37.3           ~ 4 0
18 [KPR2004] ERO 380 G 11 40 43.5 -26 28 45         26.2 ~ 1 0
19 [KPR2004] LyA 703 EmO 11 40 43.7 -26 28 22   26.4       ~ 1 0
20 [KPR2004] LyA 941 EmG 11 40 44.0 -26 28 33   25.6       ~ 2 0
21 [KPR2004] HA 279 EmG 11 40 44.09 -26 29 05.6           ~ 2 0
22 [KPR2004] ERO 53 G 11 40 44.1 -26 30 10         25.7 ~ 1 0
23 [KPR2004] ERO 442 G 11 40 44.1 -26 28 21         26.3 ~ 1 0
24 [KPR2004] ERO 95 G 11 40 44.2 -26 29 56         26.8 ~ 1 0
25 [DTD2010] MRC 1138-262 456 EmG 11 40 44.20 -26 29 07.0         24.5 ~ 9 0
26 [VV2006] J114044.5-262920 QSO 11 40 44.40 -26 29 20.7         25.2 ~ 12 0
27 [KPR2004] HA 356 EmG 11 40 44.86 -26 28 40.6           ~ 3 0
28 [KPR2004] LyA 301 EmO 11 40 45.2 -26 30 28   27.4       ~ 1 0
29 [KPR2004] LyA 417 EmO 11 40 45.3 -26 29 49   24.7       ~ 1 0
30 [KPR2004] LyA 484 EmG 11 40 45.5 -26 29 30   27.5       ~ 2 0
31 [KPR2004] ERO 463 G 11 40 45.5 -26 28 10         26.5 ~ 1 0
32 [KPR2004] HA 284 EmG 11 40 45.54 -26 29 02.2           ~ 6 0
33 [KPR2004] HA 212 EmG 11 40 45.77 -26 29 18.7           ~ 3 0
34 [KPR2004] ERO 472 EmG 11 40 45.77 -26 28 12.5         25.3 ~ 4 0
35 [KPR2004] HA 215 QSO 11 40 45.98 -26 29 16.7     20.80     ~ 11 0
36 [KPR2004] LyA 674 EmG 11 40 46.0 -26 28 36   27.5       ~ 2 0
37 [DTD2010] MRC 1138-262 464 EmG 11 40 46.07 -26 29 11.3           ~ 21 0
38 [KPR2004] HA 183 EmG 11 40 46.13 -26 29 24.7           ~ 9 0
39 [KPR2004] LyA 561 GiC 11 40 46.21 -26 29 03.2   27.5       ~ 3 0
40 [KPR2004] HA 192 EmG 11 40 46.29 -26 29 24.3           ~ 6 0
41 [KPR2004] HA 176 EmO 11 40 46.4 -26 29 27           ~ 1 0
42 [DTD2010] MRC 1138-262 558 G 11 40 46.40 -26 29 26.9         24.1 ~ 3 0
43 [KPR2004] ERO 402 G 11 40 46.4 -26 28 36         26.4 ~ 1 0
44 [KPR2004] HA 29 EmO 11 40 46.5 -26 30 14           ~ 1 0
45 [DTD2010] MRC 1138-262 476 EmG 11 40 46.67 -26 29 10.3         24.5 ~ 9 0
46 [KPR2004] HA 329 EmG 11 40 46.85 -26 28 41.1           ~ 5 0
47 [KPR2004] HA 152 EmO 11 40 46.9 -26 29 37           ~ 1 0
48 [KPR2004] ERO 509 EmG 11 40 47.37 -26 27 59.1         25 ~ 4 0
49 [KPR2004] LyA 146 EmO 11 40 47.4 -26 31 23   25.6       ~ 1 0
50 [KPR2004] ERO 151 EmG 11 40 47.46 -26 29 41.2         26.7 ~ 4 0
51 [KPR2004] ERO 163 G 11 40 47.6 -26 29 38         27.4 ~ 1 0
52 [KPR2004] ERO 282 G 11 40 47.8 -26 29 10         25 ~ 1 0
53 [KPR2004] LyA 971 EmO 11 40 47.8 -26 29 08   25.5       ~ 1 0
54 [KPR2004] LyA 286 EmG 11 40 47.9 -26 30 31   27.5       ~ 2 0
55 [KPR2004] HA 272 EmG 11 40 47.90 -26 29 06.3           ~ 9 0
56 [KPR2004] LyA 465 EmO 11 40 48.0 -26 29 37   26.8       ~ 1 0
57 [KPR2004] HA 269 EmG 11 40 48.09 -26 29 11.3           ~ 4 0
58 [KPR2004] LyA 127 EmG 11 40 48.2 -26 31 32   25.5       ~ 2 0
59 [KPR2004] LyA 491 EmO 11 40 48.2 -26 29 09   21.6       ~ 2 0
60 [KPR2004] LyA 1017 EmO 11 40 48.3 -26 29 02   24.2       ~ 1 0
61 [KPR2004] HA 199 EmG 11 40 48.36 -26 29 08.7           ~ 7 0
62 PKS J1140-2628 rG 11 40 48.35884 -26 29 08.6316     22.00     ~ 325 1
63 [KPR2004] HA 5 EmO 11 40 48.4 -26 30 31           ~ 1 0
64 NAME MRC 1138-262 Protocluster PCG 11 40 48.4 -26 29 11           ~ 91 0
65 [KPR2004] ERO 229 G 11 40 48.4 -26 29 09         20.8 ~ 1 0
66 [KPR2004] LyA 515 EmO 11 40 48.5 -26 29 07   22.7       ~ 1 0
67 [KPR2004] ERO 255 G 11 40 48.7 -26 29 04         27.5 ~ 1 0
68 [KPR2004] LyA 522 EmG 11 40 49.39 -26 29 09.1   23.7       ~ 8 0
69 [KPR2004] LyA 1009 EmO 11 40 49.5 -26 29 11   25.1       ~ 1 0
70 [KPR2004] ERO 272 G 11 40 49.6 -26 29 08         26.1 ~ 1 0
71 [KPR2004] ERO 344 G 11 40 49.70 -26 28 54.5         25.7 ~ 2 0
72 [KPR2004] HA 318 EmO 11 40 49.7 -26 28 49           ~ 1 0
73 [KPR2004] HA 167 EmO 11 40 49.8 -26 29 31           ~ 1 0
74 [KPR2004] LyA 942 EmG 11 40 49.8 -26 28 29   26.2       ~ 2 0
75 [KPR2004] HA 207 EmG 11 40 50.19 -26 29 20.9           ~ 6 0
76 [KPR2004] ERO 359 G 11 40 50.3 -26 28 50         26 ~ 1 0
77 [KPR2004] ERO 161 G 11 40 50.4 -26 29 38         25.7 ~ 1 0
78 [KPR2004] ERO 166 G 11 40 50.4 -26 29 37         25.9 ~ 1 0
79 [KPR2004] HA 210 EmG 11 40 50.58 -26 29 21.2           ~ 4 0
80 [KPR2004] HA 154 EmG 11 40 50.70 -26 29 33.6           ~ 7 0
81 [KPR2004] ERO 171 G 11 40 50.7 -26 29 34         25.2 ~ 1 0
82 [KPR2004] ERO 176 G 11 40 50.7 -26 29 32         24.9 ~ 1 0
83 [KPR2004] LyA 28 EmO 11 40 50.8 -26 32 26   26.1       ~ 1 0
84 [KPR2004] LyA 479 EmG 11 40 51.0 -26 29 31   25.3       ~ 2 0
85 [KPR2004] ERO 215 G 11 40 51.1 -26 29 24         26.5 ~ 1 0
86 [KPR2004] ERO 259 G 11 40 51.1 -26 29 05         25.5 ~ 1 0
87 [DTD2010] MRC 1138-262 601 EmG 11 40 51.20 -26 29 38.5         23.45 ~ 13 0
88 [KPR2004] ERO 233 G 11 40 51.2 -26 29 21         26.4 ~ 1 0
89 [KPR2004] ERO 348 G 11 40 51.4 -26 28 53         25.6 ~ 1 0
90 [KPR2004] HA 117 EmG 11 40 51.50 -26 29 45.6           ~ 7 0
91 [KPR2004] LyA 366 EmG 11 40 51.6 -26 30 08   25.0       ~ 4 0
92 [KPR2004] ERO 343 G 11 40 51.6 -26 28 52         25.6 ~ 1 0
93 [KPR2004] ERO 351 G 11 40 51.7 -26 28 50         26.2 ~ 1 0
94 [KPR2004] ERO 240 G 11 40 52.1 -26 29 19         25.6 ~ 1 0
95 [KPR2004] HA 375 EmO 11 40 52.1 -26 28 33           ~ 1 0
96 [KPR2004] ERO 248 G 11 40 52.3 -26 29 17         26.3 ~ 1 0
97 [KPR2004] HA 79 EmG 11 40 52.61 -26 30 00.8           ~ 7 0
98 [KPR2004] ERO 111 G 11 40 53.1 -26 29 50         24.5 ~ 1 0
99 [KPR2004] HA 310 EmO 11 40 53.6 -26 28 55           ~ 1 0
100 [KPR2004] HA 211 EmG 11 40 53.72 -26 29 19.8           ~ 3 0
101 [KPR2004] LyA 877 EmG 11 40 54.0 -26 28 01   25.3       ~ 3 0
102 [KPR2004] ERO 531 G 11 40 54.1 -26 27 48         28.1 ~ 1 0
103 [KPR2004] HA 394 EmG 11 40 54.50 -26 28 23.7           ~ 7 0
104 [KPR2004] HA 431 EmO 11 40 54.8 -26 28 04           ~ 1 0
105 [KPR2004] ERO 505 G 11 40 54.8 -26 28 04         25.1 ~ 1 0
106 [KPR2004] HA 437 EmO 11 40 54.8 -26 28 03           ~ 1 0
107 [KPR2004] LyA 297 EmO 11 40 54.9 -26 30 30   27.5       ~ 1 0
108 [KPR2004] ERO 210 G 11 40 55.1 -26 29 25         24.3 ~ 1 0
109 [KPR2004] LyA 238 EmG 11 40 55.20 -26 30 42.7   26.5       ~ 6 0
110 [KPR2004] HA 380 EmO 11 40 55.2 -26 28 28           ~ 1 0
111 [KPR2004] LyA 675 EmG 11 40 55.29 -26 28 23.8   26.8       ~ 6 0
112 [KPR2004] ERO 506 G 11 40 55.4 -26 28 00         25 ~ 1 0
113 [KPR2004] ERO 72 G 11 40 55.8 -26 30 06         25.3 ~ 1 0
114 [KPR2004] HA 388 EmG 11 40 56.36 -26 28 23.7           ~ 2 0
115 [KPR2004] ERO 121 G 11 40 56.5 -26 29 45         23.5 ~ 1 0
116 [KPR2004] LyA 565 EmG 11 40 56.6 -26 26 14   25.3       ~ 2 0
117 [KPR2004] ERO 460 G 11 40 57.0 -26 28 17         22.9 ~ 1 0
118 DKB 12d EmG 11 40 57.38 -26 29 37.5           ~ 7 0
119 [KPR2004] LyA 441 EmO 11 40 57.4 -26 29 38   24.9       ~ 1 0
120 [KPR2004] LyA 739 EmG 11 40 57.4 -26 27 08   24.4       ~ 2 0
121 [KPR2004] HA 158 EmO 11 40 57.6 -26 29 35           ~ 1 0
122 [KPR2004] HA 155 EmO 11 40 57.8 -26 29 36           ~ 1 0
123 [KPR2004] LyA 365 EmG 11 40 58.1 -26 30 09   25.0       ~ 2 0
124 [KPR2004] HA 293 EmO 11 40 58.6 -26 29 00           ~ 1 0
125 [KPR2004] ERO 267 G 11 40 59.0 -26 28 58         26.2 ~ 1 0
126 [KPR2004] LyA 891 EmG 11 40 59.07 -26 28 10.6   25.0       ~ 3 0
127 [KPR2004] HA 457 EmO 11 40 59.2 -26 27 57           ~ 1 0
128 [KPR2004] LyA 470 EmG 11 40 59.7 -26 29 35   25.8       ~ 2 0
129 [KPR2004] ERO 197 G 11 41 00.1 -26 29 28         28 ~ 1 0
130 [KPR2004] ERO 256 G 11 41 00.8 -26 29 05         26.2 ~ 1 0
131 [KPR2004] ERO 308 G 11 41 01.2 -26 28 59         26.7 ~ 1 0
132 [KPR2004] HA 477 EmO 11 41 01.5 -26 27 38           ~ 1 0
133 DKB 16 Sy1 11 41 02.38 -26 27 45.1   24.1 22.90     ~ 12 0
134 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
135 WG 22 WD* 12 38 49.7811220835 -49 48 00.219515411   14.14 13.96     DA4.2 245 0
136 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
137 3C 324.0 Sy1 15 49 49.170 +21 25 39.50   21.5       ~ 312 1

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