2025A&A...698A.201C

Query : 2025A&A...698A.201C

2025A&A...698A.201C - Astronomy and Astrophysics, volume 698A201 (2025/6-1)

Inference of the morphology and dynamical state of nearby Planck-SZ galaxy clusters with Zernike polynomials.

CAPALBO V., DE PETRIS M., FERRAGAMO A., CUI W., RUPPIN F. and YEPES G.

Abstract (from CDS):

Aims. We analyse maps of the Sunyaev-Zel'dovich (SZ) signal of local galaxy clusters (z<0.1) observed by the Planck satellite to classify their dynamical state via morphological features.
Methods. We applied a novel method, which was recently employed on mock SZ images generated from hydrodynamical simulated galaxy clusters in THE THREE HUNDRED (THE300) project to study the morphology of the cluster maps. In this paper, we report our results following its first application on real data. The method consists of modelling the images with a set of orthogonal functions defined on circular apertures, namely, the Zernike polynomials. From the fit we computed a single parameter, Н'ž, that quantifies the morphological features present in each image. The link between the morphology of 2D images and the dynamical state of the galaxy clusters is well known, even if it is not obvious. We used mock Planck-like Compton parameter maps generated for THE300 clusters to validate our morphological analysis. These clusters are, in fact, properly classified for their dynamical state with the relaxation parameter, χ, by exploiting 3D information from the simulations.
Results. We find a mild linear correlation of ∼38% between Н'ž and χ for THE300 clusters, mainly affected by the noise present in the maps. To obtain a proper dynamical-state classification for the Planck clusters, we exploited the conversion from the Н'ž parameter derived in each Planck map in χ. A fraction of the order of 63% of relaxed clusters has been estimated in the selected Planck sample. Our classification was then compared with those of previous works that have attempted to evaluate, with different indicators and/or other wavelengths, the dynamical state of the same Planck objects. We find an agreement with these other works to be greater than 58%.

Abstract Copyright: © The Authors 2025

Journal keyword(s): methods: numerical - methods: observational - methods: statistical - galaxies: clusters: general - galaxies: clusters: intracluster medium

Simbad objects: 109

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Number of rows : 109
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 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 156 0
2 ACO 21 ClG 00 20 38.75 +28 41 40.5           ~ 122 0
3 ZwCl 0031-0220 ClG 00 34 30.7 -02 06 40           ~ 25 0
4 ACO 76 ClG 00 40 16.1031 +06 52 46.226           ~ 138 2
5 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
6 ACO 119 ClG 00 56 08.57 -01 12 00.8           ~ 577 2
7 ACO 133 ClG 01 02 41.5 -21 52 53           ~ 391 1
8 ACO 151 ClG 01 08 52.3 -15 25 01           ~ 199 1
9 ACO 2877 ClG 01 09 49.3 -45 54 02           ~ 160 2
10 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 727 1
11 ACO 272 ClG 01 55 19.1 +33 56 41           ~ 66 0
12 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
13 ACO 3112 ClG 03 17 52.9 -44 15 06           ~ 329 1
14 ACO 3126 ClG 03 28 43.7 -55 42 44           ~ 64 0
15 ACO 3158 ClG 03 43 07.5 -53 38 09           ~ 327 0
16 ACO S 405 ClG 03 51 32.8 -82 13 15           ~ 50 0
17 ACO 3223 ClG 04 08 34.5 -30 49 08           ~ 59 2
18 ACO 3266 ClG 04 31 26.4 -61 25 17           ~ 447 0
19 ACO 496 ClG 04 33 40.8 -13 14 34           ~ 728 2
20 ACO 500 ClG 04 38 55.0 -22 05 55           ~ 89 0
21 ACO 514 ClG 04 48 18 -20 28.7           ~ 149 0
22 ACO 3301 ClG 05 01 05.8 -38 43 58           ~ 44 0
23 BAX 087.1623-25.4700 ClG 05 48 38.6206 -25 28 59.568           ~ 13 0
24 ACO 550 ClG 05 52 54.0 -21 03 59           ~ 57 0
25 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
26 ACO 3391 ClG 06 26 15.4 -53 40 52           ~ 222 1
27 ACO 3395 ClG 06 27 31.1 -54 23 58           ~ 229 0
28 MCXC J0631.3-5610 ClG 06 31 19.4 -56 10 13           ~ 17 0
29 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 312 1
30 ACO 644 ClG 08 17 26.1 -07 31 13           ~ 241 0
31 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
32 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 225 2
33 ACO 970 ClG 10 17 34.3 -10 42 01           ~ 93 0
34 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 248 0
35 ACO 1190 ClG 11 11 43.83 +40 51 43.5           ~ 145 0
36 ACO 1307 ClG 11 32 42.59 +14 26 16.3           ~ 100 0
37 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
38 ACO 3490 ClG 11 45 19.6 -34 25 59           ~ 55 1
39 ACO 3497 ClG 12 00 03 -31 23.7           ~ 42 0
40 ACO 1436 ClG 12 00 20.04 +56 17 10.1           ~ 120 0
41 ACO 1552 ClG 12 29 46.18 +11 44 32.3           ~ 109 0
42 ACO 1589 ClG 12 41 08.09 +18 33 18.5           ~ 112 0
43 BAX 193.6700-29.2254 ClG 12 54 40.6 -29 13 44           ~ 76 0
44 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 391 1
45 ACO 3532 ClG 12 57 19.2 -30 22 13           ~ 185 2
46 ACO 1650 ClG 12 58 42.0 -01 45 45           ~ 325 0
47 ACO 1651 ClG 12 59 27.3 -04 10 49           ~ 307 0
48 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
49 ACO 1691 ClG 13 11 11.14 +39 16 38.4           ~ 116 0
50 ACO 1736 ClG 13 26 52.1 -27 06 33           ~ 268 2
51 ACO 3558 ClG 13 28 03.2 -31 31 35           ~ 476 2
52 ACO 1750 ClG 13 30 50.44 -01 51 27.1           ~ 190 2
53 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
54 ACO 1767 ClG 13 36 06.92 +59 10 34.3           ~ 182 0
55 ACO 1775 ClG 13 41 50.60 +26 21 10.6           ~ 324 0
56 ACO 1773 ClG 13 42 22.53 +02 15 14.2           ~ 119 0
57 ACO 3571 ClG 13 47 32.4 -32 50 12           ~ 308 2
58 ACO 1795 ClG 13 48 47.4 +26 34 55           ~ 1330 0
59 ACO 1800 ClG 13 49 27.19 +28 04 44.6           ~ 127 0
60 ACO 1831 ClG 13 59 19.42 +27 58 08.2           ~ 166 0
61 ACO 1904 ClG 14 22 13.21 +48 35 59.7           ~ 144 0
62 ACO 2018 ClG 15 01 17.59 +47 16 30.2           ~ 66 0
63 ACO 2029 ClG 15 10 54.2 +05 44 23           ~ 1020 0
64 ACO 2061 ClG 15 21 19.90 +30 37 13.0           ~ 214 1
65 ACO 2065 ClG 15 22 22.7 +27 44 20           ~ 398 0
66 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
67 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 270 0
68 ACO 2108 ClG 15 40 21.78 +17 52 04.9           ~ 61 0
69 ACO 2122 ClG 15 44 55.93 +36 06 05.2           ~ 243 0
70 ACO 2142 ClG 15 58 26.5 +27 13 52           ~ 825 0
71 ACO 2147 ClG 16 02 11.96 +15 55 11.5           ~ 416 0
72 ACO 2175 ClG 16 20 30.70 +29 53 31.2           ~ 133 0
73 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
74 ACO 2244 ClG 17 02 40.33 +34 02 58.7           ~ 301 0
75 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
76 ACO 2249 ClG 17 09 36.76 +34 28 04.1           ~ 136 0
77 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
78 ZwCl 1742+3306 ClG 17 44 16.2753 +32 59 55.115           ~ 93 0
79 ZwCl 1754+6807 ClG 17 54 39.5 +68 03 23           ~ 33 0
80 CIZA J1857.6+3800 ClG 18 57 39.5 +38 00 30           ~ 24 0
81 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
82 ACO 3651 ClG 19 52 10.9 -55 05 16           ~ 74 0
83 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
84 ACO 3694 ClG 20 34 39.4 -34 04 39           ~ 32 0
85 ACO 3695 ClG 20 34 47.7 -35 49 39           ~ 96 2
86 PSZ1 G345.38-39.32 ClG 20 52 13.1555 -52 50 11.862           ~ 8 0
87 IC 1365 GrG 21 14 03.6958 +02 34 14.568           ~ 52 0
88 ACO 2377 ClG 21 45 56.4 -10 06 33           ~ 59 0
89 ACO 3806 ClG 21 46 37.9 -57 17 07           ~ 59 0
90 ACO 2384 ClG 21 52 20.9 -19 32 53           ~ 117 0
91 ACO 3822 ClG 21 54 06.2 -57 50 49           ~ 98 0
92 ACO 3825 ClG 21 58 22.4 -60 23 39           ~ 66 0
93 ACO 3827 ClG 22 01 49.1 -59 57 15           ~ 178 0
94 ACO 2420 ClG 22 10 22.5 -12 11 13           ~ 126 0
95 ACO 2426 ClG 22 14 27.3 -10 22 05           ~ 91 0
96 ACO 2440 ClG 22 23 52.6 -01 35 47           ~ 137 1
97 ACO 3911 ClG 22 46 22.6 -52 44 21           ~ 73 0
98 ACO 3921 ClG 22 49 59.0 -64 25 48           ~ 165 1
99 PSZ1 G080.62-46.81 ClG 23 01 09.7 +06 46 50           ~ 17 0
100 ACO 2538 ClG 23 08 35.1 -19 52 29           ~ 56 0
101 BAX 349.3187+18.7197 ClG 23 17 11.184 +18 41 48.87           ~ 97 0
102 ACO 2593 ClG 23 24 27.15 +14 33 40.2           ~ 231 0
103 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 572 0
104 ACO 2634 ClG 23 38 18.4 +27 01 37           ~ 515 2
105 ACT-CL J2344.3-0422 ClG 23 44 15.98 -04 22 24.5           ~ 53 0
106 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
107 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0
108 ACO 2675 ClG 23 55 42.6 +11 20 35           ~ 65 1
109 ACO 4059 ClG 23 57 02.2 -34 45 58           ~ 400 1

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