2022ApJ...933..215D

Query : 2022ApJ...933..215D

2022ApJ...933..215D - Astrophys. J., 933, 215-215 (2022/July-2)

Intrinsic Shapes of Brightest Cluster Galaxies.

DE NICOLA S., SAGLIA R.P., THOMAS J., PULSONI C., KLUGE M., BENDER R., VALENZUELA L.M. and REMUS R.-S.

Abstract (from CDS):

We discuss the statistical distribution of galaxy shapes and viewing angles under the assumption of triaxiality by deprojecting observed surface brightness profiles of 56 brightest cluster galaxies (BCGs) coming from a recently published large deep-photometry sample. For the first time, we address this issue by directly measuring axis ratio profiles without limiting ourselves to a statistical analysis of average ellipticities. We show that these objects are strongly triaxial, with triaxiality parameters 0.39 <= T <= 0.72, they have average axis ratios <p(r)> = 0.84 and <q(r)> = 0.68, and they are more spherical in the central regions but flatten out at large radii. Measured shapes in the outskirts agree well with the shapes found for simulated massive galaxies and their dark matter halos from both the IllustrisTNG and the Magneticum simulations, possibly probing the nature of dark matter. In contrast, both simulations fail to reproduce the observed inner regions of BCGs, producing objects that are too flattened.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxy evolution - Galaxy dynamics - Magnetohydrodynamical simulations

Simbad objects: 55

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Number of rows : 55
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 NGC 101 EmG 00 23 54.6185915544 -32 32 10.085419284   13.36   12.31 13.0 ~ 40 0
2 UGC 347 AG? 00 35 06.21 +45 31 44.9   16.5       ~ 14 0
3 IC 1565 BiC 00 39 26.2834752624 +06 44 03.262118424   14.41       ~ 56 2
4 MCG-02-02-086 rG 00 41 50.45002 -09 18 11.4633   14 13.52 12.94   ~ 154 1
5 Z 436-4 BiC 01 09 18.448 +13 10 09.02   15.7       ~ 28 0
6 MCG+02-04-007 rG 01 10 03.1668610704 +13 58 41.363165208   16.1       ~ 43 1
7 IC 1634 BiC 01 11 02.938 +17 39 46.14   15.27       ~ 21 0
8 Z 436-12 LIN 01 12 59.579 +15 29 28.71     15.7     ~ 91 1
9 MCG+03-04-014 BiC 01 17 17.9626715160 +16 15 56.244533220   16       ~ 15 0
10 IC 1695 rG 01 25 07.645 +08 41 57.68   14.87       ~ 68 1
11 MCG+01-05-023 BiC 01 42 05.9953621944 +07 39 53.408188836   16.0       ~ 18 0
12 IC 1733 BiC 01 50 42.901 +33 04 55.19   14.7       ~ 46 0
13 NGC 708 rG 01 52 46.482 +36 09 06.53 14.85 14.27 13.29 12.67 12.09 ~ 259 3
14 NGC 910 BiC 02 25 26.7924474768 +41 49 27.615017352   14.5       ~ 75 1
15 MCG+06-07-004 BiC 02 46 03.9460542576 +36 54 18.840411612   15.50       ~ 46 1
16 NGC 1129 BiC 02 54 27.400 +41 34 46.70   14.6 13.6     ~ 126 1
17 Z 463-35 BiC 02 56 28.763 +15 54 58.16   15.2       ~ 36 0
18 3C 75 PaG 02 57 41.64 +06 01 28.0           ~ 312 1
19 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
20 NGC 2329 rG 07 09 08.0049393360 +48 36 55.726108020   13.7 13.99     ~ 143 3
21 MCG+09-13-062 rG 07 49 27.2467268064 +52 02 32.542512144   18       ~ 28 1
22 2MASX J07532661+2921341 BiC 07 53 26.5903625208 +29 21 34.034236596           ~ 19 1
23 Z 287-63 rG 08 15 44.8468202712 +58 19 15.641116212   14.6 14.11     ~ 48 0
24 IC 2378 BiC 08 28 31.64433 +30 25 52.7798   15.3       ~ 57 0
25 LEDA 3515769 BiC 08 37 34.3386641784 +15 49 07.595126904           ~ 11 0
26 2MASX J09003199+1614253 BiC 09 00 31.99227 +16 14 25.3720           ~ 5 0
27 NGC 2804 LIN 09 16 50.0073803664 +20 11 54.619630548   14.0       ~ 60 0
28 Z 65-15 rG 10 23 23.7565983240 +12 50 06.139616784   15.3       ~ 45 1
29 IC 613 BiC 10 27 07.7881398072 +11 00 38.643884136   15.1       ~ 48 1
30 IC 664 LIN 11 00 45.3479033640 +10 33 11.411090352   14.8       ~ 48 0
31 NGC 3551 BiC 11 09 44.4516794880 +21 45 32.140238112   14.8       ~ 64 1
32 NGC 3550 IG 11 10 38.26 +28 46 02.2   14.12 13.22     ~ 31 1
33 Z 185-51 LIN 11 22 56.4616199472 +34 06 41.214943260   14.6       ~ 49 0
34 MCG+04-28-097 BiC 11 55 17.985 +23 24 17.72   19.5       ~ 29 1
35 MCG+09-20-071 rG 12 03 07.1159543808 +51 40 30.548390160   16.08   14.14   ~ 46 1
36 NGC 4104 rG 12 06 38.9098151088 +28 10 27.184493280   13.7 13.58     ~ 114 1
37 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
38 MCG+05-32-063 rG 13 41 49.131 +26 22 24.54   15.3       ~ 45 1
39 FIRST J135814.7+182046 rG 13 58 14.7468834528 +18 20 46.218306552           ~ 24 0
40 Z 162-41 BiC 13 59 15.0948648024 +27 58 34.489609500   12.7       ~ 31 1
41 MCG+03-38-044 BiC 14 52 55.3114274784 +16 42 10.348432632   15       ~ 37 0
42 IC 1101 rG 15 10 56.100 +05 44 41.19   15.10       ~ 165 2
43 Z 49-90 Sy2 15 16 44.4893939136 +07 01 17.825410740   15.19 14.17     ~ 463 4
44 Z 108-73 rG 16 02 17.0257413888 +15 58 28.670337876   14.9       ~ 95 0
45 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
46 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 180 0
47 Z 355-27 rG 17 04 27.246 +78 38 26.03   15.5       ~ 32 1
48 NGC 6338 Bla 17 15 22.9842192344 +57 24 40.346559927   14.2   8   ~ 205 2
49 MCG+02-58-021 rG 22 50 19.727 +10 54 12.57   16       ~ 30 1
50 NGC 7647 BiC 23 23 57.4310112528 +16 46 38.141670936   14.61 14.45     ~ 79 0
51 NGC 7649 rG 23 24 20.087 +14 38 49.68   15.65       ~ 62 1
52 IC 5338 rG 23 36 30.6135053136 +21 08 50.535313476   15.5       ~ 92 2
53 NGC 7720 Sy1 23 38 29.38324020 +27 01 53.2580084   13.9 13.3     ~ 565 4
54 MCG+01-60-039 rG 23 50 50.5592379024 +06 08 58.563049920   15       ~ 36 1
55 NGC 7768 BiC 23 50 58.5485212104 +27 08 50.446633668   14.0 14.23     ~ 198 0

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