2013MNRAS.436.2096S

Query : 2013MNRAS.436.2096S

2013MNRAS.436.2096S - Mon. Not. R. Astron. Soc., 436, 2096-2119 (2013/December-2)

The formation of local group planes of galaxies.

SHAYA E.J. and TULLY R.B.

Abstract (from CDS):

The confinement of most satellite galaxies in the Local Group to thin planes presents a challenge to the theory of hierarchical galaxy clustering. The Pan-Andromeda Archaeological Survey (PAndAS) collaboration has identified a particularly thin configuration with kinematic coherence among companions of M31 and there have been long-standing claims that the dwarf companions to the Milky Way lie in a plane roughly orthogonal to the disc of our galaxy. This discussion investigates the possible origins of four Local Group planes: the plane similar, but not identical to that identified by the PAndAS collaboration, an adjacent slightly tilted plane and two planes in the vicinity of the Milky Way: one with very nearby galaxies and the other with more distant ones. Plausible orbits are found by using a combination of Numerical Action methods and a backward in time integration procedure. This investigation assumes that the companion galaxies formed at an early time in accordance with the standard cosmological model. For M31, M33, IC10 and Leo I, solutions are found that are consistent with measurements of their proper motions. For galaxies in planes, there must be commonalities in their proper motions, and this constraint greatly limits the number of physically plausible solutions. Key to the formation of the planar structures has been the evacuation of the Local Void and consequent build-up of the Local Sheet, a wall of this void. Most of the M31 companion galaxies were born in early-forming filamentary or sheet-like substrata that chased M31 out of the void. M31 is a moving target because of its attraction towards the Milky Way, and the result has been alignments stretched towards our galaxy. In the case of the configuration around the Milky Way, it appears that our galaxy was in a three-way competition for companions with M31 and Centaurus A. Only those within a modest band fell our way. The Milky Way's attraction towards the Virgo Cluster resulted in alignment along the Milky Way-Virgo Cluster line.

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

Journal keyword(s): galaxies: interactions - galaxies: kinematics and dynamics - Local Group - large-scale structure of Universe

Simbad objects: 80

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Number of rows : 80
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 MCG-03-01-015 G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 782 2
2 NAME Andromeda XVIII G 00 02 14.5 +45 05 20     16.0     ~ 129 0
3 NAME Andromeda XX G 00 07 30.70 +35 07 56.4     18.2     ~ 77 0
4 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
5 And XIX G 00 19 32.10 +35 02 37.1     15.6     ~ 168 0
6 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
7 NAME Andromeda XXVI G 00 23 45.6 +47 54 58     17.3     ~ 76 0
8 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
9 NAME Andromeda XXV G 00 30 08.9 +46 51 07     14.8     ~ 120 0
10 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
11 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
12 NAME Andromeda XXX G 00 36 34.90 +49 38 48.0           ~ 59 0
13 NAME Andromeda XVII G 00 37 07.0 +44 19 20     15.8     ~ 101 0
14 NAME Andromeda XXVII G 00 37 27.1 +45 23 13     16.7     ~ 82 0
15 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
16 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
17 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
18 NAME Andromeda XI G 00 46 20.0 +33 48 05     17.5     ~ 130 0
19 NAME Andromeda XII G 00 47 27.0 +34 22 29     18.3     ~ 124 0
20 NAME Andromeda XIV G 00 51 35.0 +29 41 49     15.9     ~ 132 0
21 NAME Andromeda XIII G 00 51 51.0 +33 00 16     18.1     ~ 128 0
22 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
23 NAME Andromeda IX G 00 52 53.0 +43 11 45     16.3     ~ 176 1
24 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
25 NAME Pisces V G 00 59 29.8 +32 22 36     14.4     ~ 149 0
26 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
27 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
28 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
29 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
30 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
31 NAME Andromeda XV G 01 14 18.7 +38 07 03     14.6     ~ 123 0
32 NAME Andromeda II G 01 16 29.8 +33 25 09     11.7     ~ 402 0
33 NAME Andromeda XXIV G 01 18 30.0 +46 21 58     16.3     ~ 64 0
34 NAME Andromeda XXII G 01 27 40.0 +28 05 25     18.0     ~ 95 0
35 NAME Andromeda XXIII G 01 29 21.8 +38 43 08     14.2     ~ 88 0
36 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
37 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
38 MCG-06-07-001 G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1894 1
39 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
40 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
41 NAME IC 342 Group GrG 03 48 42 +68 00.8           ~ 102 1
42 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
43 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
44 NAME HYA SUPERCL SCG 08 57.9 +03 10           ~ 204 0
45 Z 264-88 AG? 09 16 02.0195908968 +52 50 42.051257412   14.0 13.2     ~ 141 0
46 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
47 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
48 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
49 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
50 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
51 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
52 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
53 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
54 NAME Great Attractor SCG 10 32 -46.0           ~ 617 0
55 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
56 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
57 NAME Local Supercluster SCG 12 31 +12.4           ~ 566 0
58 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
59 NAME Norma Supercluster ClG 12 49 -38.0           ~ 24 0
60 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
61 NAME Cen A Group GrG 13 20 33.9 -44 58 51           ~ 274 0
62 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
63 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
64 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 340 2
65 Z 300-12 G 17 20 14.335 +57 55 16.39   12.40 10.6     ~ 1428 1
66 M 14 GlC 17 37 36.15 -03 14 45.3   9.55 5.73     ~ 420 0
67 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
68 NAME Local Void vid 18 38 +18.0           ~ 234 0
69 NGC 6789 AG? 19 16 41.169 +63 58 23.90   13.76       ~ 122 1
70 V* RR Lyr RR* 19 25 27.9129605304 +42 47 03.693258204   7.36   7.6   kA3hF0 951 0
71 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
72 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
73 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2661 2
74 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
75 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
76 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
77 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
78 NAME Peg dSph GiG 23 51 46.3 +24 34 57   14.5 13.2     ~ 250 2
79 NAME Andromeda XXI G 23 54 47.7 +42 28 15     14.8     ~ 117 0
80 NAME Local Group GrG ~ ~           ~ 9325 0

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