2016ApJ...819...36D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.05CEST05:52:20

2016ApJ...819...36D - Astrophys. J., 819, 36 (2016/March-1)

The morphologies and alignments of gas, mass, and the central galaxies of CLASH clusters of galaxies.

DONAHUE M., ETTORI S., RASIA E., SAYERS J., ZITRIN A., MENEGHETTI M., VOIT G.M., GOLWALA S., CZAKON N., YEPES G., BALDI A., KOEKEMOER A. and POSTMAN M.

Abstract (from CDS):

Morphology is often used to infer the state of relaxation of galaxy clusters. The regularity, symmetry, and degree to which a cluster is centrally concentrated inform quantitative measures of cluster morphology. The Cluster Lensing and Supernova survey with Hubble Space Telescope (CLASH) used weak and strong lensing to measure the distribution of matter within a sample of 25 clusters, 20 of which were deemed to be "relaxed" based on their X-ray morphology and alignment of the X-ray emission with the Brightest Cluster Galaxy. Toward a quantitative characterization of this important sample of clusters, we present uniformly estimated X-ray morphological statistics for all 25 CLASH clusters. We compare X-ray morphologies of CLASH clusters with those identically measured for a large sample of simulated clusters from the MUSIC-2 simulations, selected by mass. We confirm a threshold in X-ray surface brightness concentration of C >= 0.4 for cool-core clusters, where C is the ratio of X-ray emission inside 100 h70–1 kpc compared to inside 500 h70–1 kpc. We report and compare morphologies of these clusters inferred from Sunyaev-Zeldovich Effect (SZE) maps of the hot gas and in from projected mass maps based on strong and weak lensing. We find a strong agreement in alignments of the orientation of major axes for the lensing, X-ray, and SZE maps of nearly all of the CLASH clusters at radii of 500 kpc (approximately 1/2 R500 for these clusters). We also find a striking alignment of clusters shapes at the 500 kpc scale, as measured with X-ray, SZE, and lensing, with that of the near-infrared stellar light at 10 kpc scales for the 20 "relaxed" clusters. This strong alignment indicates a powerful coupling between the cluster- and galaxy-scale galaxy formation processes.

Abstract Copyright:

Journal keyword(s): dark matter - galaxies: clusters: intracluster medium - galaxies: elliptical and lenticular, cD - gravitational lensing: strong - gravitational lensing: weak - large-scale structure of universe

Simbad objects: 25

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Number of rows : 25

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ACO 209 ClG 01 31 57.5 -13 34 35           ~ 250 0
2 ACO 383 ClG 02 48 06.9 -03 29 32           ~ 297 0
3 ClG J0329-0212 ClG 03 29 41.6 -02 11 47           ~ 106 0
4 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 216 0
5 ClG J0429-0253 ClG 04 29 36.0 -02 53 09           ~ 96 0
6 ClG J0647+7015 ClG 06 47 50.0 +70 14 55           ~ 126 0
7 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 357 0
8 ClG J0744+3927 ClG 07 44 52.5 +39 27 30           ~ 159 0
9 ACO 611 ClG 08 00 58.7 +36 02 49           ~ 222 0
10 MCS J1115.8+0129 ClG 11 15 52.1 +01 29 53           ~ 99 0
11 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 321 0
12 ACO 1423 ClG 11 57 47.34 +33 42 43.5           ~ 140 0
13 MCS J1206.2-0847 ClG 12 06 12.2 -08 48 02           ~ 182 0
14 ClG J1226+3332 ClG 12 26 57.7 +33 32 50           ~ 194 0
15 ClG J1311-0311 ClG 13 11 01.7 -03 10 38           ~ 88 0
16 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 469 0
17 ClG J1423+2404 ClG 14 23 47.7 +24 04 40           ~ 175 0
18 ClG J1532+3021 ClG 15 32 53.8 +30 21 00           ~ 89 0
19 ClG J1720+3536 ClG 17 20 16.8 +35 36 27           ~ 113 1
20 ACO 2261 ClG 17 22 28.3 +32 09 13           ~ 283 0
21 ClG J1931-2635 ClG 19 31 49.6 -26 34 33           ~ 120 0
22 ClG J2129-0741 ClG 21 29 26.0 -07 41 28           ~ 131 0
23 ClG J2129+0005 ClG 21 29 40.5 +00 05 47           ~ 216 0
24 ClG 2137-2353 ClG 21 40 12.8 -23 39 27     18.5     ~ 344 0
25 ACO S 1063 ClG 22 48 54.3 -44 31 07           ~ 205 0

    Equat.    Gal    SGal    Ecl

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2020.07.05-05:52:20

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