2009A&A...502..473G


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.25CET15:29:53

2009A&A...502..473G - Astronomy and Astrophysics, volume 502, 473-498 (2009/8-1)

Small-scale systems of galaxies. IV. Searching for the faint galaxy population associated with X-ray detected isolated E+S pairs.

GRUETZBAUCH R., ZEILINGER W.W., RAMPAZZO R., HELD E.V., SULENTIC J.W. and TRINCHIERI G.

Abstract (from CDS):

In hierarchical evolutionary scenarios, isolated, physical pairs may represent an intermediate phase, or ``way station'', between collapsing groups and isolated elliptical (E) galaxies (or fossil groups). We started a comprehensive study of a sample of galaxy pairs composed of a giant E and a spiral (S) with the aim of investigating their formation/evolutionary history from observed optical and X-ray properties. We present VLT-VIMOS observations designed to identify faint galaxies associated with the E+S systems from candidate lists generated using photometric criteria on WFI images covering an area of ∼0.2h100–1Mpc radius around the pairs. We found two and ten new members likely to be associated with the X-ray bright systems RR 143 and RR 242, respectively. The X-ray faint RR 210 and RR 216, which were only partially covered by the VIMOS observations, have two and three new faint members, respectively. The new members increase the number of associated galaxies to 4, 7, 6, and 16 for RR 143, RR 210, RR 216, and RR 242, respectively, down to MR~-12+5logh100. We derive structural properties of the faint members from surface photometry. The faint galaxy population of all the systems is dominated by disk galaxies, 40% being S0s with generally low bulge to total light ratios. A small fraction of the faint companions show signatures of interaction. A remarkable shell system is detected in the early-type galaxy RR 242_24532. We also derive dynamical properties and optical luminosity functions for the 4 groups. The above results are discussed in the context of the evolution of poor galaxy group associations. A comparison between the optical luminosity functions (OLFs) of our E+S systems and a sample of X-ray bright poor groups suggest that the OLF of X-ray detected poor galaxy systems is not universal. The OLF of our X-ray bright systems suggests that they are more dynamically evolved than our X-ray faint sample and some X-ray bright groups in the literature. However, we suggest that the X-ray faint E+S pairs represent a phase in the dynamical evolution of some X-ray bright poor galaxy groups. The recent or ongoing interaction in which the E member of the X-ray faint pairs is involved could have decreased the luminosity of any surrounding X-ray emitting gas.

Abstract Copyright:

Journal keyword(s): galaxies: evolution - galaxies: individual: RR 143 (NGC 2305/2307), RR 210 (NGC 4105/4106), RR 216 (IC 3290/NGC 4373), RR 242 (NGC 5090/5091)

CDS comments: Table A.1 AM 1207-294 NED 02 is MCG-05-29-027 in Simbad.

Simbad objects: 96

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Number of rows : 96

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 474 GiP 01 20 06.696 +03 24 54.97 12.75 12.37 11.51 11.42 10.56 ~ 322 1
2 RXC J0252.8-0116 ClG 02 52 49.4 -01 16 27           ~ 100 0
3 NGC 1132 GiG 02 52 51.82 -01 16 29.0   13.9   12.16   ~ 149 0
4 NGC 2297 GiG 06 44 24.600 -63 43 02.19   13.75   12.31   ~ 21 0
5 [GTR2007] RR 143 24246 G 06 47 07.47 -64 29 15.8     17.29 16.95   ~ 2 0
6 [GTR2007] RR 143 9192 G 06 47 53.25 -64 10 55.1     17.91 17.25   ~ 2 0
7 RR95 143 PaG 06 48.0 -64 16           ~ 4 0
8 NGC 2305 GiG 06 48 37.295 -64 16 24.05   12.82   10.98   ~ 67 0
9 NGC 2307 GiG 06 48 50.7600391325 -64 20 07.608322698   13.38   11.76   ~ 28 0
10 ESO 87-50 G 06 54 00.0 -63 13 08   15.84   14.70   ~ 17 0
11 KPG 127 PaG 07 29 44.0 +85 44 00           ~ 6 0
12 NGC 2300 IG 07 32 20.486 +85 42 31.90   12.2       ~ 317 0
13 NGC 3585 GiG 11 13 17.109 -26 45 17.96   10.64   9.22   ~ 267 0
14 ESO 440-39 G 12 01 58.0 -30 14 03   15.76   14.97   ~ 15 0
15 ESO 440-44 LSB 12 02 46.3 -29 05 33   13.93   13.20 14.0 ~ 40 0
16 6dFGS gJ120346.7-284015 G 12 03 46.7 -28 40 16   16.5       ~ 5 0
17 MCG-05-29-004 LSB 12 03 55.195 -29 37 28.61   15   14.68   ~ 7 0
18 2MASX J12041324-2918486 G 12 04 13.242 -29 18 48.62   16.2       ~ 5 0
19 2MASX J12052132-3002465 G 12 05 21.328 -30 02 46.54   16.4       ~ 5 0
20 IC 2996 GiP 12 05 48.633 -29 58 18.87   14.27   13.28   ~ 42 0
21 IC 760 GiG 12 05 53.522 -29 17 31.44   13.44   12.05   ~ 28 0
22 2MASX J12063106-2951336 G 12 06 31.066 -29 51 33.61   15.0   14.6 14.6 ~ 11 0
23 NGC 4105 LIN 12 06 40.767 -29 45 36.64   11.35 12.52 9.53   ~ 119 0
24 NGC 4106 GiP 12 06 44.7 -29 46 06   11.61 11.35     ~ 69 0
25 6dFGS gJ120649.6-302745 G 12 06 49.6 -30 27 45   16.3       ~ 5 0
26 2MASX J12065029-2936236 GiP 12 06 50.2514702888 -29 36 23.620646399   15.3 14.78 14.26   ~ 9 0
27 IC 3005 EmG 12 07 14.2068684190 -30 01 28.814948679   13.80   12.71 13.2 ~ 59 0
28 6dFGS gJ120730.5-301156 G 12 07 30.0 -30 11 56   16.72   16.01   ~ 2 0
29 [GTR2007] RR 210 11372 G 12 07 43.28 -29 43 10.9     18.09 17.59   ~ 2 0
30 ESO 441-4 G 12 07 43.8 -29 11 59   16.39   15.20   ~ 4 0
31 IC 3010 GiG 12 07 57.422 -30 20 22.28   13.22   11.68   ~ 32 0
32 2MASX J12083457-3008549 G 12 08 34.578 -30 08 55.00   16.0       ~ 6 0
33 ESO 441-11 G 12 09 25.166 -28 48 05.39   15.55       ~ 38 0
34 ESO 441-14 GiP 12 10 14.154 -30 04 41.09   14.88   13.89   ~ 31 0
35 IC 764 GiP 12 10 14.191 -29 44 12.52   13.03   11.90 12.3 ~ 68 0
36 MCG-05-29-027 G 12 10 27.173 -30 05 21.08   15   14.32   ~ 10 0
37 2MASX J12185570-4005358 G 12 18 55.701 -40 05 35.83   16.27   15.04   ~ 6 0
38 ESO 321-21 GiG 12 20 16.212 -40 23 27.01   13.54   12.07   ~ 16 0
39 ESO 321-26 G 12 21 52.0429143503 -38 47 25.375754516   12.91 11.40 11.21 13.8 ~ 9 0
40 ESO 321-28 IG 12 23 28.235 -39 08 53.83   15.13   13.26   ~ 13 0
41 ESO 322-2 EmG 12 23 54.880 -39 38 07.85   15.07   14.23   ~ 6 0
42 MCG-06-27-023 GiG 12 24 50.153 -38 39 53.01   15   13.70   ~ 14 0
43 RR95 216 PaG 12 25.0 -39 46           ~ 4 0
44 IC 3290 GiG 12 25 08.972 -39 46 31.76   12.97   11.43   ~ 25 0
45 [GTR2007] RR 216 3519 G 12 25 17.80 -39 33 45.6     17.77 17.26   ~ 2 0
46 NGC 4373 GiG 12 25 17.820 -39 45 34.77   11.59 11.05 10.09   ~ 108 1
47 ESO 322-7 GiC 12 25 36.8 -40 43 24   14.96   14.62   ~ 10 0
48 LEDA 594616 G 12 25 36.9 -39 44 39     16.17 15.58   ~ 3 0
49 ESO 322-8 EmG 12 25 37.738 -39 19 11.02   13.11 12.94 11.42   ~ 49 0
50 ESO 322-9 G 12 26 09.8382279021 -39 07 26.327450620   14.13 14.52 12.88   ~ 34 0
51 2MASX J12261133-3934474 G 12 26 11.334 -39 34 47.44     15.17 14.57   ~ 4 0
52 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5979 0
53 ESO 322-11 GiC 12 27 16.143 -40 28 28.40   14.56   13.58   ~ 9 0
54 IC 3370 LIN 12 27 37.310 -39 20 16.13   11.99 12.12 10.39   ~ 143 0
55 ESO 322-17 GiC 12 28 25.023 -38 29 14.45   15.28   14.38   ~ 21 0
56 ESO 322-19 GiC 12 29 07.196 -40 40 24.55   14.84   13.60 14.4 ~ 32 0
57 ESO 322-20 G 12 29 12.858 -40 41 30.98   14.26   13.12   ~ 15 0
58 6dFGS gJ122940.1-400722 G 12 29 40.199 -40 07 22.03   17.74   16.46   ~ 8 0
59 2MASX J12301164-3845537 G 12 30 11.642 -38 45 53.74   16.16   14.91   ~ 6 0
60 NGC 4494 GiP 12 31 24.034 +25 46 29.93   10.55 9.74     ~ 454 0
61 NGC 4499 GiG 12 32 04.944 -39 58 56.83   13.58   12.20   ~ 33 0
62 ESO 322-24 GiC 12 32 44.3 -39 36 27   16.05   15.20   ~ 4 0
63 ESO 269-69 GiG 13 13 17.3958499177 -43 34 59.510506833   14.99       ~ 18 0
64 ESO 269-72 GiC 13 13 33.750 -43 31 33.60   13.99   12.34   ~ 22 0
65 NAME HYA-CEN SUPERCL SCG 13 14 -33.3           ~ 130 0
66 ESO 269-76 GiC 13 15 19.0 -43 48 20   15.84   14.50   ~ 7 0
67 2MASX J13161705-4307595 G 13 16 17.0268041025 -43 07 59.745835540   16.06   14.82   ~ 6 0
68 2MASX J13181305-4330182 G 13 18 13.056 -43 30 18.29   16.39   15.15   ~ 4 0
69 ESO 269-84 GiG 13 19 21.1244694986 -43 38 57.827554088   13.99   12.26   ~ 37 0
70 2MASX J13192359-4417358 G 13 19 23.591 -44 17 35.84   16.23   14.94   ~ 4 0
71 [GTR2007] RR 242 25575 G 13 19 44.25 -43 46 28.0     17.02 16.42   ~ 2 0
72 2MASX J13195606-4306498 G 13 19 56.1023057252 -43 06 50.052151805   16.08   15.16   ~ 6 0
73 2MASX J13201668-4327195 G 13 20 16.681 -43 27 19.54   17.96   14.49   ~ 10 0
74 ESO 269-88 G 13 20 16.7 -43 51 43   14.03   12.53   ~ 8 0
75 [GTR2007] RR 242 36267 G 13 20 21.80 -43 55 38.4     19.17 18.67   ~ 2 0
76 [GTR2007] RR 242 20075 G 13 20 26.71 -43 42 27.5     16.88 16.33   ~ 2 0
77 LEDA 553294 G 13 20 35.4 -43 05 52           ~ 3 0
78 NGC 5082 GiG 13 20 40.0297633185 -43 41 59.752963039   13.78   12.05   ~ 30 0
79 NGC 5086 GiC 13 20 55.4 -43 44 20   16.86   15.57   ~ 16 0
80 RR95 242 PaG 13 21.0 -43 42           ~ 4 0
81 [GTR2007] RR 242 13326 G 13 21 03.88 -43 36 58.1     16.75 16.15   ~ 2 0
82 NGC 5090 rG 13 21 12.8447 -43 42 16.839   12.59 11.51 10.84   ~ 189 1
83 ESO 270-3 GiG 13 21 14.810 -43 45 42.87   15.44 14.33 13.99   ~ 12 0
84 [GTR2007] RR 242 15689 G 13 21 16.54 -43 38 53.2     18.47 17.73   ~ 2 0
85 NGC 5091 G 13 21 18.5621395965 -43 43 24.361053714   13.94 13.35 12.43   ~ 36 1
86 LEDA 545406 G 13 21 22.5 -43 43 23     17.69 17.05   ~ 3 0
87 2MASX J13212941-4248564 G 13 21 29.4020837522 -42 48 56.827268690   17.36   16.04   ~ 4 0
88 LEDA 546146 G 13 21 32.9 -43 39 44     17.81 17.37   ~ 3 0
89 [GTR2007] RR 242 8064 G 13 22 10.44 -43 32 55.6     18.49 17.85   ~ 2 0
90 ESO 270-7 GiG 13 23 15.696 -43 32 38.03   14.38   12.97   ~ 21 0
91 2MASX J13270026-4359472 GiG 13 27 00.264 -43 59 47.20   15.39   14.09   ~ 10 0
92 ESO 270-14 GiG 13 28 27.2924257028 -44 10 19.037862669   14.40   12.87   ~ 27 0
93 NGC 5322 SyG 13 49 15.24 +60 11 25.8   11.3       ~ 384 2
94 NGC 5846 BiC 15 06 29.253 +01 36 20.29   11.9   9.74   ~ 786 1
95 NAME Local Group GrG ~ ~           ~ 7181 0
96 RR95 210 PaG ~ ~           ~ 4 0

    Equat.    Gal    SGal    Ecl

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2021.02.25-15:29:53

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