2005A&A...444..387D

Query : 2005A&A...444..387D

2005A&A...444..387D - Astronomy and Astrophysics, volume 444387-402 (2005/12-3)

The Shapley super-cluster. New X-ray detections and mass distribution.

DE FILIPPIS E., SCHINDLER S. and ERBEN T.

Abstract (from CDS):

The largest and the deepest super-structure known today is the Shapley super-cluster. This is the sky area with the highest over-density of galaxy clusters and therefore also an ideal region to test the effects of a high density environment on galaxies and on clusters. We performed an X-ray survey of a wide region surrounding the Shapley super-structure. Additionally to previously known super-cluster X-ray members, we identified diffuse X-ray emission from 35 cluster candidates without previous X-ray detection. 21 of them were previously known, optically selected super-cluster members, while the other candidates had not been previously detected in any wavelength range. Optical follow-up observations revealed that at least four of these new candidates also have optical cluster counterparts. The super-cluster shows a slightly flattened and elongated morphology. Clusters outside the central dense core are preferentially located in four perpendicular filaments in a similar way to what is seen in simulations of Large Scale Structure. We measure the cluster number density in the region to be more than one order of magnitude higher than the mean density of rich Abell clusters previously observed at similar Galactic latitudes; this over-density, in the super-cluster outskirts, is mainly due to an excess of low X-ray luminous clusters (with respect to an average population), which leads us to think that the whole region is still accreting low luminosity, small objects from the outskirts. Pushing our total X-ray mass estimate to fainter clusters would drastically increase the total super-cluster mass measure, because of the presence of the rich X-ray low luminosity population.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - X-rays: galaxies: clusters - cosmology: observations - large-scale structure of Universe

Nomenclature: Table 4: [DSE2005] BNN (Nos B1-B14).

Simbad objects: 97

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Number of rows : 97
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 ACO 1252 ClG 11 24 26 -08 47.5           ~ 7 0
2 ACO 1327 ClG 11 37 01 +26 31.4           ~ 9 0
3 ACO 1329 ClG 11 38 35 +71 07.4           ~ 21 0
4 ACO 1336 ClG 11 39 25 +32 24.4           ~ 21 0
5 ACO 1342 ClG 11 40 40 +10 04.4           ~ 17 0
6 ACO 3519 ClG 12 32 40 -38 23.6           ~ 3 0
7 ACO S 700 ClG 12 36 41.8 -33 55 01           ~ 33 0
8 ACO S 701 ClG 12 36 48.1 -35 32 01           ~ 7 0
9 ACO 1604 ClG 12 43 56 -23 06.4           ~ 6 0
10 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
11 MCXC J1252.5-3116 ClG 12 52 34.93 -31 15 56.8           ~ 25 0
12 ACO 1631 ClG 12 52 50.6 -15 25 37           ~ 176 1
13 ACO 1633 ClG 12 53 52.4 -26 22 58           ~ 9 0
14 ACO 3528 ClG 12 54 18.2 -29 01 16           ~ 166 1
15 BAX 193.5900-29.0100 ClG 12 54 22.1 -29 00 46           ~ 45 0
16 BAX 193.6700-29.2254 ClG 12 54 40.6 -29 13 44           ~ 76 0
17 ACO 3530 ClG 12 55 36.0 -30 20 49           ~ 109 0
18 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
19 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 185 2
20 ACO 3535 ClG 12 57 48 -28 29.2           ~ 21 2
21 ACO S 717 ClG 12 58 06 -28 13.2           ~ 6 0
22 ACO 1648 ClG 12 59 00 -26 37.2           ~ 29 0
23 LEDA 3096207 Sy1 12 59 02.4330600432 -21 55 38.941289292           ~ 10 0
24 [DSE2005] B6 ClG 12 59 11 -21 54.7           ~ 2 0
25 [DSE2005] B1 ClG 12 59 11 -21 54.7           ~ 2 0
26 ACO S 718 ClG 12 59 44 -33 40.2           ~ 10 0
27 ACO 3537 ClG 13 01 01.64 -32 26 20.6           ~ 52 3
28 ACO 3541 ClG 13 03 41.8 -24 15 06           ~ 26 0
29 MCXC J1304.2-3030 ClG 13 04 17.3 -30 31 34           ~ 17 0
30 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
31 ACO S 721 ClG 13 06 06 -37 35.0           ~ 16 0
32 ACO 3542 ClG 13 08 41 -34 34.0           ~ 25 0
33 ACO 3544 ClG 13 11 04 -32 59.9           ~ 5 0
34 ACO S 724 ClG 13 13 17 -32 56.9           ~ 14 0
35 ACO 3548 ClG 13 13 29 -44 04.9           ~ 10 1
36 ACO S 726 ClG 13 15.2 -33 39           ~ 19 0
37 ACO 1709 ClG 13 18 42 -21 27.8           ~ 27 0
38 ACO 3552 ClG 13 18 53 -31 48.8           ~ 22 0
39 ACO 3553 ClG 13 19 14 -37 10.8           ~ 23 0
40 ACO 3554 ClG 13 19 30 -33 28.7           ~ 42 0
41 ACO 3555 ClG 13 20 46 -28 58.7           ~ 22 0
42 ACO S 729 ClG 13 21 32 -35 47.7           ~ 16 0
43 ACO S 731 ClG 13 23 01 -34 52.7           ~ 10 0
44 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 159 0
45 ACO 3557 ClG 13 24 52 -28 52.6           ~ 18 0
46 ACO 1732 ClG 13 25 00 -20 13.6           ~ 25 0
47 ACO S 733 ClG 13 25 51 -37 14.6           ~ 6 0
48 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
49 ACO S 734 ClG 13 27 55 -41 07.5           ~ 4 0
50 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
51 BAX 202.4458-31.6081 ClG 13 29 47.0 -31 36 29           ~ 80 1
52 ACO 3559 ClG 13 29 53.9 -29 31 29           ~ 74 0
53 BAX 202.9000-31.8128 ClG 13 31 28.8 -31 49 40           ~ 88 1
54 RX J1332.2-3303 ClG 13 32 01.3 -33 03 51           ~ 4 0
55 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 145 1
56 ACO 3561 ClG 13 33 15 -42 51.4           ~ 11 0
57 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
58 ACO 3563 ClG 13 33 39 -42 33.4           ~ 10 0
59 ACO 1757 ClG 13 33 40.8403 -23 18 15.029           ~ 32 1
60 ACO 3564 ClG 13 34 22 -35 13.4           ~ 36 0
61 HD 118072 ** 13 34 57.39199 -29 55 24.0117   9.87       G3V 31 0
62 1RXS J133530.6-295031 BLL 13 35 29.7518919576 -29 50 38.921848188   18.13   19.25   ~ 70 0
63 SC 1336-31.4 ClG 13 36 19.0 -31 48 00           ~ 5 0
64 ACO 3565 ClG 13 36 39 -33 58.3           ~ 116 1
65 ACO 3566 ClG 13 38 59 -35 33.2           ~ 45 0
66 ACO 3568 ClG 13 41 11 -34 38.1           ~ 8 0
67 SC 1342-30.2 ClG 13 42 45.0 -30 20 00           ~ 5 0
68 ACO S 740 ClG 13 43 32 -38 11.1           ~ 21 0
69 ACO S 742 ClG 13 44 35 -34 18.0           ~ 7 0
70 ACO 3570 ClG 13 46 50 -37 55.0           ~ 57 3
71 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
72 LCDCS 0831 ClG 13 48 02.6 -12 46 44           ~ 2 0
73 ACO 3572 ClG 13 48 11 -33 22.9           ~ 30 0
74 NAME IC 4329 Group GrG 13 48 36.4 -30 30 13           ~ 147 2
75 ACO 1791 ClG 13 48 54 -25 26.9           ~ 25 0
76 ACO 3575 ClG 13 52 35 -32 52.8           ~ 33 0
77 ACO 3577 ClG 13 54 20 -27 50.7           ~ 30 0
78 ACO 3578 ClG 13 57 30 -24 43.6           ~ 23 1
79 ACO S 753 ClG 14 03 35.9 -33 59 16           ~ 91 1
80 ACO 3581 ClG 14 07 29.8 -27 01 04           ~ 197 3
81 ACO S 757 ClG 14 12 15 -33 08.1           ~ 4 0
82 ACO S 758 ClG 14 12 20.9 -34 20 20           ~ 6 0
83 [DSE2005] B10 X ~ ~           ~ 1 0
84 [DSE2005] B11 X ~ ~           ~ 1 0
85 NAME CENTAURUS SUPERCL SCG ~ ~           ~ 30 0
86 [DSE2005] B9 X ~ ~           ~ 1 0
87 [DSE2005] B12 X ~ ~           ~ 1 0
88 NAME Local Group GrG ~ ~           ~ 9325 0
89 [DSE2005] B8 X ~ ~           ~ 2 0
90 [DSE2005] B7 X ~ ~           ~ 1 0
91 [DSE2005] B3 X ~ ~           ~ 1 0
92 [DSE2005] B2 X ~ ~           ~ 1 0
93 [DSE2005] B13 X ~ ~           ~ 1 0
94 [DSE2005] B5 ClG ~ ~           ~ 1 0
95 [DSE2005] B4 ClG ~ ~           ~ 1 0
96 NAME Cen Hya Region reg ~ ~           ~ 7 0
97 [DSE2005] B14 X ~ ~           ~ 1 0

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