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CHEX-MATE: Morphological analysis of the sample
- Source :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2022, 665, pp.A117. ⟨10.1051/0004-6361/202243470⟩, Campitiello, M G, Ettori, S, Lovisari, L, Bartalucci, I, Eckert, D, Rasia, E, Rossetti, M, Gastaldello, F, Pratt, G W, Maughan, B, Pointecouteau, E, Sereno, M, Biffi, V, Borgani, S, Luca, F D, Petris, M D, Gaspari, M, Ghizzardi, S, Mazzotta, P & Molendi, S 2022, ' CHEX-MATE : Morphological analysis of the sample ', Astronomy and Astrophysics, vol. 665, A117, pp. 1-22 . https://doi.org/10.1051/0004-6361/202243470
- Publication Year :
- 2022
-
Abstract
- In this work, we performed an analysis of the X-ray morphology of the 118 CHEX-MATE (Cluster HEritage project with XMM-Newton - Mass Assembly and Thermodynamics at the Endpoint of structure formation) galaxy clusters, with the aim to provide a classification of their dynamical state. To investigate the link between the X-ray appearance and the dynamical state, we considered four morphological parameters: the surface brightness concentration, the centroid shift, and the second- and third-order power ratios. These indicators result to be: strongly correlated with each other, powerful in identifying the disturbed and relaxed population, characterised by a unimodal distribution and not strongly influenced by systematic uncertainties. In order to obtain a continuous classification of the CHEX-MATE objects, we combined these four parameters in a single quantity, M, which represents the grade of relaxation of a system. On the basis of the M value, we identified the most extreme systems of the sample, finding 15 very relaxed and 27 very disturbed galaxy clusters. From a comparison with previous analysis on X-ray selected samples, we confirmed that the Sunyaev-Zeldovich (SZ) clusters tend to be more disturbed. Finally, by applying our analysis on a simulated sample, we found a general agreement between the observed and simulated results, with the only exception of the concentration. This latter behaviour, is partially related to the presence of particles with high smoothed-particle hydrodynamics density in the central regions of the simulated clusters due to the action of the idealised isotropic thermal Active Galactic Nuclei (AGN) feedback.<br />24 pages, 16 figures, 10 tables. Accepted for publication in A&A
- Subjects :
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
galaxies: clusters: intracluster medium
Settore FIS/05
galaxie
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Cosmology
X-ray
Astrophysic
Space and Planetary Science
X-rays: galaxies: clusters
X-rays
galaxies
astro-ph.CO
clusters
galaxies clusters
intracluster medium
Nongalactic Astrophysics
galaxies cluster
cluster
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00046361
- Database :
- OpenAIRE
- Journal :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2022, 665, pp.A117. ⟨10.1051/0004-6361/202243470⟩, Campitiello, M G, Ettori, S, Lovisari, L, Bartalucci, I, Eckert, D, Rasia, E, Rossetti, M, Gastaldello, F, Pratt, G W, Maughan, B, Pointecouteau, E, Sereno, M, Biffi, V, Borgani, S, Luca, F D, Petris, M D, Gaspari, M, Ghizzardi, S, Mazzotta, P & Molendi, S 2022, ' CHEX-MATE : Morphological analysis of the sample ', Astronomy and Astrophysics, vol. 665, A117, pp. 1-22 . https://doi.org/10.1051/0004-6361/202243470
- Accession number :
- edsair.doi.dedup.....14173227284fdb7f03846edcf863856d