2008MNRAS.389..749M

Query : 2008MNRAS.389..749M

2008MNRAS.389..749M - Mon. Not. R. Astron. Soc., 389, 749-765 (2008/September-2)

The anatomy of the NGC5044 group - I. Group membership and dynamics.

MENDEL J.T., PROCTOR R.N., FORBES D.A. and BROUGH S.

Abstract (from CDS):

We use a combination of new AAOmega multi-object wide-field spectroscopic observations and literature data to define 111 spectroscopically confirmed members of the massive NGC5044 group with MB≤ -13.5mag, providing a three-fold increase in group members over previous analyses of this group. We find the group to have a dynamical mass of 9.2x1013M☉, placing it on the border between rich groups and poor clusters. However, comparison to the LX-σν and LX-Mass relations shows that it more closely follows the cluster scaling relations. Using a combination of crossing time, X-ray contours and line-of-sight velocity profile, we are able to preclude growth of the NGC5044 group via major subgroup mergers within the last ∼1Gyr. While the majority of dynamical indicators for the group suggest it is virialized, we find evidence for a small, dynamically distinct subgroup at 1.4Mpc from the group centre, suggesting that the NGC5044 group is the dominant structure in its local environment, and is currently accreting smaller groups.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: clusters: NGC5044 group - galaxies: distances and redshifts - galaxies: evolution - galaxies: formation - galaxies: fundamental parameters

Simbad objects: 148

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Number of rows : 148
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 MCG-03-33-031 EmG 13 05 15.57 -16 53 17.6   15.27   14.51   ~ 27 0
3 LEDA 45300 G 13 05 34.00 -15 46 09.0           ~ 2 0
4 [BFK2006] GEMS-N5044-5 GiG 13 05 37.27 -15 46 58.5           ~ 3 0
5 [BFK2006] GEMS-N5044-14 GiG 13 08 05.02 -14 44 53.3           ~ 2 0
6 LEDA 45518 AG? 13 08 06.38 -14 46 36.5           ~ 6 0
7 LEDA 91258 AG? 13 08 13.90 -16 14 21.0   16.4       ~ 15 0
8 LEDA 896031 EmG 13 08 54.770 -16 36 10.67   16.52   15.42   ~ 8 0
9 6dFGS gJ130916.7-165312 LSB 13 09 16.717 -16 53 11.60   16.72   15.52   ~ 11 0
10 MCG-03-34-004 EmG 13 09 44.0874273960 -16 36 07.742045124   13.87   12.89 13.3 ~ 54 0
11 NGC 4997 GiP 13 09 51.70 -16 30 55.7   13       ~ 29 0
12 LEDA 3803344 G 13 09 53.5166632608 -16 31 01.039916856       17.17   ~ 8 0
13 LEDA 900168 AG? 13 10 09.5289395880 -16 16 45.363840096           ~ 6 0
14 MCG-03-34-008 GiG 13 10 24.8933385624 -16 55 57.911510748   14   13.06   ~ 29 0
15 [BFK2006] GEMS-N5044-7 GiG 13 10 59.34 -15 20 44.3           ~ 3 0
16 6dFGS gJ131115.0-180610 AG? 13 11 15.03 -18 06 09.6   16.61   15.75   ~ 5 0
17 [KKF2008] GEMS-N5044-18 GiG 13 11 33.10 -14 40 39.8           ~ 4 0
18 [BFK2006] GEMS-N5044-18 GiG 13 11 36.13 -14 40 40.1           ~ 2 0
19 NGC 5006 EmG 13 11 45.7713514368 -19 15 42.466312620   13.33   11.89   ~ 42 0
20 ESO 576-7 EmG 13 11 47.040 -18 47 31.20   15.93   15.02   ~ 12 0
21 LEDA 894102 AG? 13 11 58.4863267536 -16 44 54.062608848   15.62   14.39   ~ 11 0
22 LEDA 83784 GiG 13 12 13.80 -16 57 22.0   18.4       ~ 6 0
23 LEDA 83785 G 13 12 18.6 -16 47 40   18.9       ~ 4 0
24 NGC 5010 GiG 13 12 26.331 -15 47 52.64   14.3       ~ 85 0
25 MCG-03-34-014 EmG 13 12 35.435 -17 32 32.61   13.14   12.9 12.2 ~ 78 0
26 LEDA 83787 AG? 13 12 36.50 -16 13 52.0   18.6       ~ 5 0
27 NGC 5017 GiG 13 12 54.5176056816 -16 45 56.864317068   13.2   12.49   ~ 72 0
28 LEDA 83789 GiG 13 12 56.1 -16 49 22   19.2       ~ 5 0
29 2MASS J13125725-1633102 * 13 12 57.2568897936 -16 33 10.205270352   19.5       ~ 2 0
30 LEDA 83791 G 13 13 04.9 -16 15 46   17.49       ~ 4 0
31 MCG-03-34-019 GiG 13 13 05.4955444800 -16 28 41.305830096   14.5   13.32   ~ 29 0
32 LEDA 83792 GiG 13 13 06.80 -16 41 00.0   18.9       ~ 7 0
33 LEDA 83795 G 13 13 12.2 -16 28 03   19.7       ~ 4 0
34 MCG-03-34-020 EmG 13 13 12.4856028144 -16 07 49.822977036   14.7   13.83 13.6 ~ 31 0
35 6dFGS gJ131328.4-161853 GiG 13 13 28.42 -16 18 52.9   15.6       ~ 14 0
36 MCG-03-34-022 GiG 13 13 32.2282403640 -17 04 43.155462324   14.3   12.75   ~ 26 0
37 LEDA 83799 GiG 13 13 33.6 -17 03 47   17.7       ~ 6 0
38 MCG-02-34-010 GiG 13 13 34.332 -15 25 55.41   13.71   12.49 12.4 ~ 46 0
39 LEDA 83800 GiG 13 13 36.00 -16 16 58.0   18.9       ~ 7 0
40 LEDA 83801 G 13 13 39.6 -16 01 47   19.1       ~ 5 0
41 LEDA 83802 GiG 13 13 43.10 -16 29 58.0   18.9       ~ 6 0
42 PMN J1313-1619 rG 13 13 46.621 -16 20 07.92   17.09       ~ 6 1
43 LEDA 881995 EmG 13 13 50.08 -17 30 47.8   16.80   16.01   ~ 9 0
44 LEDA 83804 GiG 13 13 50.96 -16 05 13.7   17.2       ~ 8 0
45 NGC 5030 GiP 13 13 54.1559047032 -16 29 27.401507844   14.2   12.44   ~ 36 0
46 2MASS J13135471-1627087 * 13 13 54.7109206800 -16 27 08.663123160   18.9       ~ 3 0
47 LEDA 83807 G 13 13 55.9 -16 35 49   18.6       ~ 4 0
48 6dFGS gJ131356.2-161624 GiG 13 13 56.228 -16 16 24.42   15.5       ~ 21 0
49 2MASXI J1313594-162303 GiP 13 13 59.52 -16 23 03.8   15.7       ~ 13 0
50 LEDA 83818 GiG 13 14 00.3 -16 47 08   16.3       ~ 7 0
51 LEDA 83810 GiG 13 14 00.47 -16 00 44.2   17.0       ~ 8 0
52 NGC 5031 GiG 13 14 03.1971389328 -16 07 23.049013008   14.0   12.76   ~ 37 0
53 LEDA 83811 G 13 14 05.4 -15 55 39   18.2       ~ 6 0
54 LEDA 83813 GiG 13 14 07.38048 -16 25 36.3828   16.6       ~ 13 0
55 [BFK2006] GEMS-N5044-1 GiG 13 14 09.930 -16 41 41.60           ~ 4 0
56 LEDA 83815 G 13 14 12.3 -16 40 16   18.9       ~ 4 0
57 LEDA 83814 G 13 14 12.3 -16 28 58           ~ 5 0
58 6dFGS gJ131413.1-161115 G 13 14 13.0474654776 -16 11 14.788900788   17.79       ~ 7 0
59 2MASX J13141323-1619288 GiG 13 14 13.2476924664 -16 19 29.017107984   17.3       ~ 7 0
60 LEDA 83819 GiG 13 14 16.70 -16 33 24.0   18.8       ~ 6 0
61 6dFGS gJ131417.3-162619 GiG 13 14 17.333 -16 26 18.91   15.9       ~ 15 0
62 LEDA 83823 GiG 13 14 20.0 -15 53 01   18.9       ~ 5 0
63 NAME NGC 5044 Group GrG 13 14 22.7 -16 32 04           ~ 186 0
64 LEDA 83824 G 13 14 25.5 -16 17 51   17.99       ~ 5 0
65 MCG-03-34-025 EmG 13 14 30.4225918704 -17 32 00.715922916   15   14.15   ~ 20 0
66 LEDA 83827 GiG 13 14 31.23 -16 22 47.6   15.4       ~ 16 0
67 6dFGS gJ131434.9-162929 GiG 13 14 34.8649708152 -16 29 28.782962196   15.8       ~ 17 0
68 LEDA 83830 GiG 13 14 35.84 -16 34 50.4   16.5       ~ 9 0
69 LEDA 83829 G 13 14 36.8 -16 07 56   19.3       ~ 5 0
70 2MASX J13143919-1550359 GiG 13 14 39.2265085632 -15 50 36.076211016   16.2       ~ 7 0
71 LEDA 83832 GiG 13 14 39.40 -16 10 04.0   16.7       ~ 8 0
72 LEDA 83837 GiG 13 14 43.54 -16 22 54.9   18.8       ~ 5 0
73 [FS90] NGC 5044 59 G 13 14 43.60 -15 44 48.0   19.3       ~ 2 0
74 LEDA 83836 GiG 13 14 43.61 -15 51 34.4   18.8       ~ 7 0
75 LEDA 83841 G 13 14 47.9 -16 17 51   19.5       ~ 5 0
76 NGC 5035 GiG 13 14 49.2353312592 -16 29 33.467307612   13.9   12.43   ~ 39 0
77 LEDA 83842 GiG 13 14 49.82 -16 58 24.2   15.2       ~ 13 0
78 NGC 5037 GiP 13 14 59.381 -16 35 25.16   13.0   11.78   ~ 67 0
79 LEDA 83846 GiG 13 14 59.40 -15 53 57.0   17.4       ~ 7 0
80 LEDA 83847 GiG 13 14 59.80 -16 46 15.0   18.7       ~ 6 0
81 NGC 5038 GiG 13 15 02.135 -15 57 06.16   13.9   13.01   ~ 53 0
82 6dFGS gJ131504.1-162339 GiG 13 15 04.0679474352 -16 23 39.525049536   15.9       ~ 18 0
83 2MASX J13150513-1620451 GiG 13 15 05.0953116624 -16 20 45.525211368   16.93 15.44     ~ 17 0
84 6dFGS gJ131510.5-161419 GiG 13 15 10.5384551880 -16 14 19.094774424   15.0       ~ 19 0
85 [FS90] NGC 5044 79 GiG 13 15 12.71 -16 29 57.1   16.1       ~ 4 0
86 MCG-03-34-032 AG? 13 15 12.781 -17 58 00.67   14.75   13.99 14.2 ~ 45 0
87 LEDA 83858 GiG 13 15 14.3 -15 50 59   19.1       ~ 6 0
88 MCG-03-34-033 GiG 13 15 17.5678548696 -16 29 09.914225028   14.7   13.56   ~ 20 0
89 LEDA 83860 GiG 13 15 21.60 -16 36 08.0   17.4       ~ 10 0
90 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 531 0
91 LEDA 83864 G 13 15 26.8 -15 55 21   18.5       ~ 4 0
92 LEDA 83866 G 13 15 27.8 -16 11 41   19.0       ~ 6 0
93 6dFGS gJ131532.0-162851 GiP 13 15 32.0544340008 -16 28 51.450788028   15.8       ~ 15 0
94 LEDA 83871 GiG 13 15 32.40 -16 38 12.0   18.8       ~ 9 0
95 LEDA 83872 GiG 13 15 32.70 -16 50 35.0   18.5       ~ 6 0
96 2MASX J13153736-1452209 GiG 13 15 37.3887745152 -14 52 21.169285428   15.46   14.16   ~ 18 0
97 LEDA 83876 G 13 15 42.7 -16 33 01   19.8       ~ 5 0
98 NGC 5046 GiG 13 15 45.1136847696 -16 19 36.427404972   14.3   13.24   ~ 30 0
99 NGC 5047 GiP 13 15 48.4943053680 -16 31 07.822979652   13.7   12.40   ~ 37 0
100 LEDA 83880 GiG 13 15 56.80 -16 16 10.0   19.0       ~ 6 0
101 NGC 5049 EmG 13 15 59.3023632720 -16 23 49.627236084   13.8   12.89   ~ 47 0
102 2MASXI J1315597-161028 GiG 13 15 59.92 -16 10 31.6   17.4       ~ 5 0
103 QSO B1313-1552 QSO 13 16 06.7973453280 -16 08 40.260041160   19.09 18.95     ~ 9 0
104 LEDA 83884 G 13 16 08.1 -16 59 47   18.0       ~ 6 0
105 MCG-03-34-038 AG? 13 16 19.676 -16 40 13.48   15   13.78   ~ 17 0
106 LEDA 83889 GiG 13 16 19.70 -16 08 30.0   19.0       ~ 6 0
107 6dFGS gJ131623.1-160811 GiG 13 16 23.0928395304 -16 08 11.059621440   15.8       ~ 11 0
108 2MASS J13162609-1703198 * 13 16 26.0866199736 -17 03 19.611119304   19.0       ~ 2 0
109 LEDA 83895 GiG 13 16 31.30 -16 40 40.0   18.6       ~ 6 0
110 LEDA 83896 GiG 13 16 35.62 -16 26 05.7   18.3       ~ 6 0
111 LEDA 83897 G 13 16 35.8 -15 57 07   18.7       ~ 6 0
112 LEDA 83900 GiG 13 16 39.40 -16 57 03.0   18.6       ~ 7 0
113 LEDA 83904 G 13 16 47.5 -16 28 04   17.20       ~ 5 0
114 2MASX J13164875-1620397 GiP 13 16 48.7308496776 -16 20 39.463437444   15.80   14.57   ~ 21 0
115 ESO 576-21 AG? 13 16 53.2 -17 53 56   16.05   15.43   ~ 10 0
116 LEDA 83910 GiG 13 16 54.40 -16 03 18.0   18.6       ~ 7 0
117 ESO 576-22 EmG 13 16 55.3634881608 -17 56 42.223572816   15.31   14.07   ~ 13 0
118 LEDA 83909 GiP 13 16 55.43 -16 26 32.2   18.6       ~ 8 0
119 MCG-03-34-040 EmG 13 16 56.243 -16 35 34.79   15.1   14.62   ~ 24 0
120 2MASX J13165667-1618447 G 13 16 56.6796918576 -16 18 44.777117700   18.3       ~ 7 0
121 NGC 5054 Sy1 13 16 58.488 -16 38 05.46   11.3   10.36 10.7 ~ 203 1
122 LEDA 83913 GiG 13 17 03.0 -16 35 38   19.0       ~ 7 0
123 MCG-03-34-041 GiP 13 17 06.119 -16 15 07.80   13.5   13.45   ~ 64 0
124 LEDA 83917 G 13 17 09.3 -16 51 18   19.4       ~ 4 0
125 MCG-03-34-042 GiP 13 17 10.7734682256 -16 13 46.402236444   14.8   14.09   ~ 18 0
126 IC 863 EmG 13 17 12.4025383728 -17 15 16.053508008   14.24   13.17   ~ 61 0
127 LEDA 83919 GiG 13 17 14.00 -16 59 59.0   19.1       ~ 6 0
128 LEDA 83925 GiG 13 17 32.00 -15 52 51.0   19.0       ~ 6 0
129 LEDA 83926 G 13 17 34.2 -16 10 57   18.7       ~ 6 0
130 6dFGS gJ131736.4-163225 GiG 13 17 36.3829220736 -16 32 25.404749160   15.4       ~ 17 0
131 [FS90] NGC 5044 155 GiG 13 17 40.90 -15 44 35.0   17.4       ~ 4 0
132 LEDA 83932 G 13 17 49.4 -16 53 37   18.6       ~ 4 0
133 2MFGC 10625 GiG 13 18 09.024 -16 58 15.65   16.9       ~ 12 0
134 LEDA 83934 G 13 18 11.5 -16 06 57   18.7       ~ 4 0
135 MCG-02-34-018 Sy2 13 18 12.3900538896 -15 41 25.785148992   14   13.81   ~ 22 0
136 LEDA 83935 GiG 13 18 17.80 -16 38 25.0   18.9       ~ 6 0
137 MCG-02-34-019 EmG 13 18 26.854 -15 45 59.91   15.18   14.09   ~ 22 0
138 IC 4221 Sy1 13 18 30.3595530480 -14 36 32.170225356   13.93   12.94   ~ 62 0
139 MCG-03-34-045 EmG 13 18 41.257 -19 04 47.70   14.56   13.64   ~ 18 0
140 LEDA 46402 AG? 13 18 56.50 -17 38 06.0           ~ 13 0
141 MCG-03-34-047 GiG 13 18 59.0737282320 -18 35 16.549494684   14.00   12.57   ~ 31 0
142 MCG-02-34-024 GiG 13 19 17.5199879736 -15 09 25.303909968   14   13.50   ~ 24 0
143 NGC 5073 Sy2 13 19 20.6629199856 -14 50 40.937423928   13.46   12.19   ~ 102 0
144 2MASX J13192221-1509232 G 13 19 22.218 -15 09 23.30   16.14   15.10   ~ 4 0
145 LEDA 46494 AG? 13 19 54.83 -17 18 55.8   15.46   14.80   ~ 17 0
146 HIPASS J1320-14 AG? 13 20 12.9340 -14 27 42.146           ~ 9 1
147 MCG-02-34-033 GiP 13 20 16.9839232800 -14 48 45.351366048   15   14.13   ~ 23 0
148 MCG-03-34-051 AG? 13 20 18.552 -16 32 15.53   15   13.67   ~ 20 0

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