2013MNRAS.436..796P

Query : 2013MNRAS.436..796P

2013MNRAS.436..796P - Mon. Not. R. Astron. Soc., 436, 796-806 (2013/November-3)

Locating bound structure in an accelerating universe.

PEARSON D.W. and BATUSKI D.J.

Abstract (from CDS):

Given the overwhelming evidence that the Universe is currently undergoing an accelerated expansion, the question of what are the largest gravitationally bound structures remains. A couple of groups, Busha et al. (B03) and Dünner et al. (D06), have attempted to analytically define these limits, arriving at substantially different estimates due to differences in their assumptions about the velocities at the present epoch. In an effort to locate the largest bound structures in the Universe, we selected the Aquarius (ASC), Microscopium (MSC), Corona Borealis (CBSC) and Shapley (SSC) superclusters for study, due to their high number density of rich Abell clusters. Simple N-body simulations, which assumed negligible intercluster mass, were used to assess the likelihood of these structures being gravitationally bound, and the predictions of the models of B03 and D06 were compared with those results. We find that ASC, and MSC contain pairs of clusters which are gravitationally bound, A2541/A2546 and A3695/A3696, respectively, with no other structures having a significant chance of being bound. For SSC, we find a group of five clusters, A3554, A3556, A3558, A3560 and A3562 that are bound, with an additional pair, A1736/A3559, having a slight chance of being bound. We find that CBSC has no extended bound structure, contrary to the findings of Small et al., who claim that the entire supercluster is bound. In regards to the analytical models, we find that B03 will identify structure that is definitely bound, but tends to underestimate the true extent of the structure, while D06 will identify all structure that is bound while overestimating its extent. Combined, the two models can provide lower and upper limits to the extent of bound structures so long as there are no other significant structures nearby or no significant dark matter exterior to the clusters.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): dark energy - dark matter - large-scale structure of Universe

Simbad objects: 45

goto Full paper

goto View the references in ADS

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 NAME AQR SUPERCL SCG 00 10.1 -18 01           ~ 19 1
2 ACO 222 ClG 01 37 31.1 -12 59 30           ~ 153 1
3 ACO 223 ClG 01 37 55.9 -12 49 11           ~ 135 1
4 ACO 901 ClG 09 56 09.7 -09 56 17           ~ 113 1
5 ACO 902 ClG 09 56 33.600 -10 09 13.10           ~ 61 1
6 ACO 3528 ClG 12 54 18.2 -29 01 16           ~ 166 1
7 ACO 3530 ClG 12 55 36.0 -30 20 49           ~ 109 0
8 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 185 2
9 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
10 ACO 3542 ClG 13 08 41 -34 34.0           ~ 25 0
11 ACO 3553 ClG 13 19 14 -37 10.8           ~ 23 0
12 ACO 3554 ClG 13 19 30 -33 28.7           ~ 42 0
13 ACO 3556 ClG 13 24 06.2 -31 39 38           ~ 159 0
14 ACO 1735 ClG 13 26 05.0 +12 23 16           ~ 29 0
15 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
16 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
17 BAX 202.4458-31.6081 ClG 13 29 47.0 -31 36 29           ~ 80 1
18 ACO 3559 ClG 13 29 53.9 -29 31 29           ~ 74 0
19 BAX 202.9000-31.8128 ClG 13 31 28.8 -31 49 40           ~ 88 1
20 ACO 3560 ClG 13 32 23.7 -33 08 21           ~ 145 1
21 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
22 ACO 3564 ClG 13 34 22 -35 13.4           ~ 36 0
23 ACO 3566 ClG 13 38 59 -35 33.2           ~ 45 0
24 ACO 3577 ClG 13 54 20 -27 50.7           ~ 30 0
25 ACO 2061 ClG 15 21 19.90 +30 37 13.0           ~ 214 1
26 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
27 ACO 2067 ClG 15 23 14 +30 54.4           ~ 111 1
28 NAME CrB Supercluster SCG 15 25 +29.5           ~ 148 0
29 ACO 2079 ClG 15 28 04.7 +28 52 40           ~ 138 0
30 ClG 1529+29 ClG 15 31 +28.9           ~ 4 0
31 ACO 2089 ClG 15 32 36.89 +28 02 10.1           ~ 108 0
32 ACO 2092 ClG 15 33 19.99 +31 09 12.3           ~ 130 0
33 ACO 3677 ClG 20 26 21 -33 21.1           ~ 28 0
34 ACO 3693 ClG 20 34 22.0 -34 29 40           ~ 46 0
35 ACO 3695 ClG 20 34 47.7 -35 49 39           ~ 96 2
36 ACO 3696 ClG 20 35 10 -34 54.6           ~ 17 1
37 NAME MICROSCOPIUM SUPERCL SCG 20 36 -34.8           ~ 10 0
38 ACO 3705 ClG 20 41 47.1 -35 10 30           ~ 47 0
39 ACO 2541 ClG 23 10 04.1 -22 57 43           ~ 19 0
40 ACO 2546 ClG 23 10 45.9 -22 39 42           ~ 22 0
41 ACO 2548 ClG 23 11 21.2 -20 25 41           ~ 18 0
42 ACO 2554 ClG 23 12 18.7 -21 30 54           ~ 100 1
43 ACO 2555 ClG 23 12 45.5 -22 12 40           ~ 19 0
44 ACO 3985 ClG 23 15 57.5 -23 19 37           ~ 14 2
45 NAME Local Group GrG ~ ~           ~ 9325 0

To bookmark this query, right click on this link: simbad:objects in 2013MNRAS.436..796P and select 'bookmark this link' or equivalent in the popup menu