2018ApJ...856..131J


Query : 2018ApJ...856..131J

2018ApJ...856..131J - Astrophys. J., 856, 131-131 (2018/April-1)

Using strong gravitational lensing to identify fossil group progenitors.

JOHNSON L.E., IRWIN J.A., WHITE R.E., WONG K.-W., MAKSYM W.P., DUPKE R.A., MILLER E.D. and CARRASCO E.R.

Abstract (from CDS):

Fossil galaxy systems are classically thought to be the end result of galaxy group/cluster evolution, as galaxies experiencing dynamical friction sink to the center of the group potential and merge into a single, giant elliptical that dominates the rest of the members in both mass and luminosity. Most fossil systems discovered lie within z < 0.2, which leads to the question, what were these systems' progenitors? Such progenitors are expected to have imminent or ongoing major merging near the brightest group galaxy that, when concluded, will meet the fossil criteria within the look forward time. Since strong gravitational lensing preferentially selects groups merging along the line of sight, or systems with a high mass concentration like fossil systems, we searched the CASSOWARY survey of strong-lensing events with the goal of determining whether lensing systems have any predisposition to being fossil systems or progenitors. We find that ∼13% of lensing groups are identified as traditional fossils while only ∼3% of nonlensing control groups are. We also find that ∼23% of lensing systems are traditional fossil progenitors compared to ∼17% for the control sample. Our findings show that strong-lensing systems are more likely to be fossil/pre-fossil systems than comparable nonlensing systems. Cumulative galaxy luminosity functions of the lensing and nonlensing groups also indicate a possible, fundamental difference between strong-lensing and nonlensing systems' galaxy populations, with lensing systems housing a greater number of bright galaxies even in the outskirts of groups.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: groups: general - galaxies: luminosity function, mass function - gravitational lensing: strong

Simbad objects: 58

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Number of rows : 58
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 CSWA 34 gLS 00 17 01.5 -10 09 11           ~ 1 0
2 CSWA 21 gLS 00 22 40.9 +14 31 11           ~ 6 0
3 CSWA 102 gLS 00 58 48.94 -07 21 56.7           ~ 2 0
4 CSWA 165 gLS 01 05 19.66 +01 44 56.4           ~ 6 0
5 CSWA 116 gLS 01 43 50.12 +16 07 39.0           ~ 6 0
6 CSWA 103 gLS 01 45 04.29 -04 55 51.6           ~ 6 0
7 CSWA 22 gLS 01 46 56.00 -09 29 52.5           ~ 4 0
8 CSWA 164 gLS 02 32 49.86 -03 23 26.0           ~ 7 0
9 CSWA 11 gLS 08 00 13.06 +08 12 08.4           ~ 4 0
10 CSWA 139 gLS 08 07 31.50 +44 10 48.5           ~ 4 0
11 CSWA 23 gLS 08 27 28.8 +22 32 54           ~ 2 0
12 CSWA 29 gLS 08 40 21.0 +10 52 13           ~ 1 0
13 CSWA 141 gLS 08 46 47.50 +04 46 05.1           ~ 7 0
14 CSWA 30 gLS 08 51 26.50 +35 58 13.8           ~ 3 0
15 CSWA 142 gLS 08 54 28.72 +10 08 14.7           ~ 3 0
16 CSWA 19 G 09 00 02.79 +22 34 03.6           ~ 11 0
17 CSWA 4 G 09 01 22.37 +18 14 32.3           ~ 6 0
18 CSWA 31 gLS 09 21 25.74 +18 10 17.3           ~ 5 0
19 [KAD2010] SDSS J0952+3434 gLS 09 52 40.22 +34 34 46.1           ~ 5 0
20 [KAD2010] SDSS J0957+0509 gLS 09 57 39.19 +05 09 31.9           ~ 6 0
21 CSWA 117 gLS 10 02 02.51 +60 20 26.3           ~ 2 0
22 CSWA 15 gLS 10 08 59.77 +19 37 17.5           ~ 3 0
23 CSWA 32 gLS 10 15 05.8 +55 30 18           ~ 1 0
24 NAME Cheshire Cat gLS 10 38 43.58 +48 49 17.7           ~ 19 0
25 CSWA 33 gLS 10 49 23.38 +35 44 41.0           ~ 2 0
26 CSWA 25 gLS 10 49 43.2 +44 20 36           ~ 1 0
27 CSWA 104 gLS 11 10 17.69 +64 59 48.2           ~ 3 0
28 CSWA 16 gLS 11 11 03.30 +53 08 51.8           ~ 2 0
29 [KAA2009] SDSS J1113+2356 gLS 11 13 10.7 +23 56 39           ~ 5 0
30 CSWA 105 gLS 11 15 04.39 +16 45 38.6           ~ 3 0
31 NAME [WHX2009] MACS J113313.1+500840 gLS 11 33 13.2 +50 08 40           ~ 3 0
32 CSWA 18 gLS 11 34 06.7 +25 33 35           ~ 1 0
33 [KAA2009] SDSS J1137+4936 gLS 11 37 40.1 +49 36 36           ~ 6 0
34 CSWA 17 gLS 11 38 08.95 +27 54 30.7           ~ 3 0
35 CSWA 107 gLS 11 47 23.30 +33 31 53.6           ~ 4 0
36 NAME Cosmic Horseshoe G 11 48 33.10 +19 30 03.2           ~ 74 0
37 CSWA 108 gLS 11 56 05.50 +19 11 12.7           ~ 2 0
38 NAME the Clone gLS 12 06 02.09 +51 42 29.5           ~ 43 0
39 [KAD2010] SDSS J1207+5254 gLS 12 07 35.91 +52 54 59.2           ~ 5 0
40 CSWA 8 gLS 12 09 23.7 +26 40 47           ~ 8 0
41 CSWA 38 gLS 12 26 51.7 +21 52 25           ~ 5 0
42 CSWA 9 gLS 12 27 18.7 +17 25 52           ~ 1 0
43 CSWA 13 gLS 12 37 36.20 +55 33 42.9           ~ 4 0
44 CSWA 3 gLS 12 40 32.28 +45 09 02.9           ~ 4 0
45 CSWA 5 G 12 44 51.0 +01 07 19           ~ 5 0
46 [KAD2010] SDSS J1318+3942 gLS 13 18 11.5 +39 42 26           ~ 7 0
47 CSWA 28 gLS 13 43 32.8 +41 55 03           ~ 13 0
48 CSWA 20 gLS 14 41 49.16 +14 41 20.6           ~ 12 1
49 [KAD2010] SDSS J1450+3908 gLS 14 50 30.65 +39 08 19.1           ~ 4 0
50 [KAA2009] SDSS J1511+4713 gLS 15 11 18.7 +47 13 40           ~ 6 0
51 CSWA 39 gLS 15 27 45.0 +06 52 34           ~ 3 0
52 [KAA2009] SDSS J1629+3528 gLS 16 29 54.6 +35 28 39           ~ 3 0
53 CSWA 14 gLS 17 23 36.20 +34 11 58.1           ~ 6 0
54 CSWA 128 gLS 19 58 35.32 +59 50 58.9           ~ 8 0
55 CSWA 163 gLS 21 58 43.67 +02 57 30.2           ~ 5 0
56 CSWA 159 gLS 22 22 08.57 +27 45 35.6           ~ 4 0
57 CSWA 10 gLS 22 38 31.31384 +13 19 55.8618           ~ 4 0
58 CSWA 111 gLS 23 00 17.25 +22 13 29.7           ~ 2 0

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2023.01.28-10:34:30

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