2015AJ....149...54T

Query : 2015AJ....149...54T

2015AJ....149...54T - Astron. J., 149, 54 (2015/February-0)

Galaxy groups.

TULLY R.B.

Abstract (from CDS):

Galaxy groups can be characterized by the radius of decoupling from cosmic expansion, the radius of the caustic of second turnaround, and the velocity dispersion of galaxies within this latter radius. These parameters can be a challenge to measure, especially for small groups with few members. In this study, results are gathered pertaining to particularly well-studied groups over four decades in group mass. Scaling relations anticipated from theory are demonstrated and coefficients of the relationships are specified. There is an update of the relationship between light and mass for groups, confirming that groups with mass of a few times 1012M☉ are the most lit up while groups with more and less mass are darker. It is demonstrated that there is an interesting one-to-one correlation between the number of dwarf satellites in a group and the group mass. There is the suggestion that small variations in the slope of the luminosity function in groups are caused by the degree of depletion of intermediate luminosity systems rather than variations in the number per unit mass of dwarfs. Finally, returning to the characteristic radii of groups, the ratio of first to second turnaround depends on the dark matter and dark energy content of the universe and a crude estimate can be made from the current observations of Ωmatter ∼ 0.15 in a flat topology, with a 68% probability of being less than 0.44.

Abstract Copyright: ∼

Journal keyword(s): dark matter - galaxies: groups: general - galaxies: luminosity function, mass function

Simbad objects: 156

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Number of rows : 156
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 ESO 349-31 AG? 00 08 13.1536 -34 34 47.836   15.54   14.99   ~ 156 3
4 NGC 55 rG 00 14 53.602 -39 11 47.86 8.54 8.58 7.87 7.84   ~ 828 2
5 ESO 410-5 LSB 00 15 31.21 -32 10 49.9   15.32 14.9 14.58   ~ 120 1
6 IC 10 rG 00 20 17.33520 +59 18 13.6480   13.6 9.5     ~ 1185 1
7 NAME Cetus Dwarf Galaxy G 00 26 10.8 -11 03 14     13.2     ~ 257 0
8 ESO 294-10 AG? 00 26 33.37 -41 51 19.1   15.76 15.3 14.97   ~ 122 2
9 NGC 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
10 NGC 185 Sy2 00 38 57.9400026024 +48 20 15.035874648   9.10 9.2     ~ 840 1
11 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2236 2
12 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
13 IC 1574 AG? 00 43 03.82 -22 14 48.8 15.25 14.73 14.35 14.24 14.2 ~ 137 1
14 NAME Andromeda I G 00 45 39.8 +38 02 28   13.9 12.7     ~ 355 0
15 NGC 247 LSB 00 47 08.554 -20 45 37.44 10.11 9.61 9.10 8.87   ~ 480 2
16 NAME M31 Group GrG 00 47 28.6 +40 17 23           ~ 65 0
17 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3588 2
18 MCG-04-03-019 G 00 49 49.3 -21 00 58 16.11 15.64 15.36 14.8 15.5 ~ 144 1
19 ESO 540-32 LSB 00 50 24.5 -19 54 23 17.44 16.54 16.01 15.70   ~ 79 1
20 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1614 2
21 NAME Scl Group GrG 01 00 06 -33 44.2           ~ 526 0
22 NAME Pisces I G 01 03 55.0 +21 53 06   16.18 14.3     ~ 404 0
23 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
24 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
25 NAME Andromeda V G 01 10 17.1 +47 37 41     15.3     ~ 215 0
26 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
27 NGC 625 AGN 01 35 04.632 -41 26 10.32 12.37 11.78 11.25 11.03 11.5 ~ 312 2
28 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 575 2
29 NAME Cas 1 G 02 06 07.9 +69 00 36     14.62     ~ 53 0
30 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1741 2
31 NAME NGC 1023 Group GrG 02 39 37.9 +39 20 51           ~ 81 0
32 NGC 1023 AG? 02 40 24.0133575864 +39 03 47.663392896 10.91 10.35 9.35 7.83   ~ 689 2
33 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1448 3
34 NGC 1172 GiP 03 01 36.0605047968 -14 50 11.499147312   12.87       ~ 155 0
35 NGC 1201 EmG 03 04 07.9912913448 -26 04 10.874234136   11.78 10.64 10.35   ~ 152 0
36 NGC 1232 EmG 03 09 45.514 -20 34 45.48   10.67 9.87 9.53 10.2 ~ 296 0
37 NGC 1269 EmG 03 17 18.5785534752 -41 06 28.628735184 9.85 9.83 8.81 8.72   ~ 445 1
38 NGC 1300 Sy2 03 19 41.0462219928 -19 24 40.187565432   11.16 10.42 9.90 10.7 ~ 616 0
39 NGC 1302 GiG 03 19 51.2026512864 -26 03 37.946814660   11.43   9.99 10.8 ~ 151 0
40 NGC 1309 GiG 03 22 06.5548977432 -15 23 59.791692912   12.08   12.5 11.7 ~ 246 1
41 NGC 1316 rG 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1491 1
42 NAME NGC 1332 Group GrG 03 26 17.1 -21 20 05           ~ 18 0
43 NGC 1332 GiP 03 26 17.321 -21 20 07.33   11.45   9.84   ~ 378 0
44 NGC 1340 GiG 03 28 19.6251763296 -31 04 05.435465520   11.20 10.32 9.70   ~ 222 1
45 NAME NGC 1400 Group GrG 03 32 16.00 -18 33 54.0           ~ 75 0
46 NGC 1357 Sy2 03 33 17.0545498128 -13 39 50.970066984   12.44   11.8 11.3 ~ 152 0
47 NGC 1367 EmG 03 35 01.3451198496 -24 55 59.504904516   11.48   9.98 11.1 ~ 209 0
48 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 2029 0
49 NGC 1395 SyG 03 38 29.789 -23 01 39.69   10.71   8.99   ~ 289 0
50 NAME Eridanus ClG GrG 03 38 32.00 -22 18 51.0           ~ 200 0
51 NGC 1398 GiG 03 38 52.130 -26 20 16.22   10.37   8.90 10.1 ~ 250 0
52 NGC 1400 EmG 03 39 30.851 -18 41 17.25 12.48 12.01 10.96 10.45   ~ 309 1
53 NGC 1407 rG 03 40 11.904 -18 34 49.36   10.64 9.67 9.13   ~ 613 2
54 NGC 1421 EmG 03 42 29.2806642840 -13 29 16.951034724   12.38       ~ 203 1
55 IC 342 AGN 03 46 48.514 +68 05 45.98   10.5       ~ 1579 1
56 MCG-07-08-008 EmG 03 47 34.12 -38 34 35.5   14.34   13.87 14.5 ~ 61 0
57 NGC 1461 EmG 03 48 27.1307092296 -16 23 34.248819300   12.85       ~ 87 0
58 NAME IC 342 Group GrG 03 48 42 +68 00.8           ~ 102 1
59 NAME Maffei Group GrG 03 49 +68.0           ~ 52 0
60 NAME Eri Region reg 04 00 -20.0           ~ 43 0
61 NGC 1519 Sy1 04 08 07.591 -17 11 34.46   13.73   12.70   ~ 75 0
62 NGC 1532 GiP 04 12 04.3612491792 -32 52 26.960041056   10.65   9.34 10.4 ~ 164 0
63 LEDA 2807061 G 07 00 29.3 -04 12 30           ~ 43 1
64 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
65 NAME NGC 2403 Group GrG 07 36.9 +65 36           ~ 22 0
66 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
67 Z 264-88 AG? 09 16 02.0195908968 +52 50 42.051257412   14.0 13.2     ~ 141 0
68 NAME Leo T G 09 34 53.4 +17 03 05     15.1     ~ 434 0
69 NGC 2976 GiG 09 47 15.458 +67 54 58.97 11.77 11.03 10.16 9.51   ~ 712 1
70 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
71 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
72 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
73 LEDA 28826 G 09 58 49.06 +66 50 53.2   16       ~ 24 0
74 Z 153-10 G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 652 0
75 NAME NGC 3109 Group GrG 09 59 35.2 -12 49 52           ~ 43 0
76 Z 36-12 H2G 10 00 00.8217342072 +05 20 09.533389560 12.77 12.25 11.89 11.71   ~ 569 0
77 LEDA 2807133 GiG 10 00 16.0 +63 11 05           ~ 40 1
78 NGC 3109 AG? 10 03 06.877 -26 09 34.46 11.10 10.42 10.04 9.91   ~ 825 2
79 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
80 NAME Antlia Dwarf Galaxy G 10 04 03.9 -27 20 01 16.73 15.69 15.17 15.00   ~ 221 1
81 Z 64-73 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1284 1
82 MCG-01-26-030 H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 789 2
83 Z 313-5 AG? 10 12 48.017 +64 06 28.52   15.7       ~ 29 0
84 NAME Sextans dSph LSB 10 13 02.9 -01 36 53   12 10.4     ~ 921 0
85 IC 2574 AG? 10 28 23.6148831408 +68 24 43.440012756 11.70 11.07 10.87 10.74   ~ 703 1
86 LEDA 5056941 LSB 10 28 39.7 +70 14 01           ~ 20 1
87 LEDA 5056942 G 10 41 16.8 +70 09 03           ~ 15 0
88 NAME UMa Region reg 11 00 +50.0           ~ 333 0
89 Z 126-111 G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 899 0
90 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
91 Z 214-32 AG? 11 50 52.98254 +38 52 50.6594   13.72 13.9 13.39   ~ 175 0
92 NAME NGC 4168 Group GrG 12 12.0 +13 24           ~ 69 0
93 NGC 4190 LSB 12 13 44.765 +36 38 02.49 13.88 13.40 13.25 12.86   ~ 224 0
94 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
95 NGC 4236 GiG 12 16 42.118 +69 27 45.25 10.97 10.58 10.08 9.90   ~ 415 1
96 IC 3104 AG? 12 18 46.06 -79 43 33.9   13.65 12.8 12.04   ~ 93 1
97 NAME Virgo W GrG 12 20.0 +05 48   6.3       ~ 89 0
98 NAME Virgo Cloud W' GrG 12 24.0 +07 12           ~ 29 0
99 NAME NGC 4214 Group GrG 12 24.6 +39 23           ~ 2 0
100 LEDA 40598 GiC 12 25 50.517 +13 11 51.51   17 15.56   14.51 ~ 42 0
101 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
102 Z 216-4 GiG 12 27 40.90 +43 29 44.0 13.75 13.10 12.7 12.33   ~ 270 0
103 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
104 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
105 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
106 NAME Local Supercluster SCG 12 31 +12.4           ~ 566 0
107 NAME CVn I Group GrG 12 32 48.3 +33 57 07           ~ 149 0
108 IC 3492 GiC 12 33 19.772 +12 51 12.77   15 15.30     ~ 94 0
109 NGC 4639 Sy1 12 42 52.3785000336 +13 15 26.706153600   13.62 12.72     ~ 642 0
110 MCG+06-28-030 GiC 12 47 00.610 +36 28 37.09   17       ~ 86 0
111 ACO 3526 ClG 12 48 49.2 -41 18 17           ~ 1154 2
112 NGC 4839 BiC 12 57 24.3563164776 +27 29 52.203087132 13.56 13.02 12.06     ~ 482 3
113 Z 71-87 H2G 12 58 40.1930636208 +14 13 00.739589628 15.24 15.16 14.98 14.81   ~ 475 0
114 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
115 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
116 NAME Cen A Group GrG 13 20 33.9 -44 58 51           ~ 274 0
117 NGC 5102 EmG 13 21 57.6100832352 -36 37 48.395156160   9.74 9.65 8.47 10.2 ~ 389 1
118 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
119 Z 271-48 EmG 13 30 44.8682655624 +54 54 38.522749824 14.72 14.25 13.90 13.75   ~ 218 0
120 NGC 5203 EmG 13 32 13.3928031744 -08 47 10.577839992   14   12.45   ~ 27 0
121 NGC 5206 GiG 13 33 43.9615937880 -48 09 03.953598228   11.62   10.40   ~ 121 0
122 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
123 NAME NGC 5236 Group GrG 13 37 06 -29 51.9           ~ 75 0
124 MCG-06-30-025 EmG 13 49 17.5109711256 -36 03 48.860478360   11.00   10.11   ~ 120 1
125 NGC 5353 rG 13 53 26.7104646981 +40 16 59.200050598   11.8   10.57   ~ 309 1
126 HCG 68 CGG 13 53 40.9 +40 19 07     12.4     ~ 114 0
127 LEDA 2807150 LSB 13 54 33.356 +04 14 39.66   16.8 17.1     ~ 89 0
128 LEDA 166185 G 14 07 10.1 +35 03 37   16.9 17.2     ~ 94 0
129 Z 133-19 AG? 14 15 57.0834 +23 03 29.871 15.40 14.77 14.41 14.32   ~ 296 0
130 Z 247-26 AG? 14 24 43.21 +44 31 41.8 14.24 13.54 13.17 13.07   ~ 217 0
131 LEDA 51659 G 14 28 03.7 -46 18 06   15       ~ 73 1
132 NAME NGC 5846 Group GrG 15 05 47.0 +01 34 25           ~ 165 0
133 ESO 274-1 G 15 14 13.429 -46 48 33.12   12.00   10.97 11.3 ~ 118 0
134 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 115 0
135 MCG+01-43-006 SyG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 502 1
136 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 253 4
137 NAME Local Void vid 18 38 +18.0           ~ 234 0
138 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 323 1
139 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1661 0
140 MCG-02-53-003 G 20 46 51.7 -12 50 54 15.75 15.18 14.83 14.46   ~ 470 1
141 IC 5152 rG 22 02 41.521 -51 17 47.20   11.03 10.9 10.19   ~ 273 1
142 ESO 468-20 G 22 40 43.6 -30 47 55   15.88   15.13   ~ 45 0
143 NAME Tuc Galaxy G 22 41 49.6 -64 25 10   15.7 15.2     ~ 324 0
144 MCG-05-55-012 G 23 26 27.52 -32 23 19.5 15.34 14.71 14.23 14.03   ~ 163 0
145 NAME Andromeda VII GiG 23 26 31.0 +50 40 33   13.6 11.8     ~ 222 1
146 Z 431-72 G 23 28 35.2 +14 44 35 13.85 13.16 12.52     ~ 499 1
147 MCG-05-56-001 G 23 43 45.549 -31 57 24.37 14.55 14.03 13.73 13.63   ~ 162 1
148 LEDA 2807157 GiG 23 45 35.177 +38 43 05.09   16.7 15.2     ~ 93 1
149 NGC 7793 GiG 23 57 49.7540045856 -32 35 27.701550744 10.26 9.74 9.28 9.06 9.7 ~ 1188 2
150 NAME MW Group GrG ~ ~           ~ 22 0
151 NAME Leo Spur reg ~ ~           ~ 36 0
152 NAME Pleiades Moving Group MGr ~ ~           ~ 297 0
153 NAME Virgo Extension GrG ~ ~           ~ 56 0
154 NAME CFA Great Wall SCG ~ ~           ~ 142 0
155 NAME VIR-LIB CL Cld ~ ~           ~ 13 0
156 NAME Local Group GrG ~ ~           ~ 9325 0

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