Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26660
Title: | X-Ray Morphological Analysis of the Planck ESZ Clusters | Authors: | LOVISARI, LORENZO Forman, William R. Jones, Christine ETTORI, STEFANO Andrade-Santos, Felipe Arnaud, Monique Démoclès, Jessica Pratt, Gabriel W. Randall, Scott Kraft, Ralph |
Issue Date: | 2017 | Journal: | THE ASTROPHYSICAL JOURNAL | Number: | 846 | Issue: | 1 | First Page: | 51 | Abstract: | X-ray observations show that galaxy clusters have a very large range of morphologies. The most disturbed systems, which are good to study how clusters form and grow and to test physical models, may potentially complicate cosmological studies because the cluster mass determination becomes more challenging. Thus, we need to understand the cluster properties of our samples to reduce possible biases. This is complicated by the fact that different experiments may detect different cluster populations. For example, Sunyaev-Zeldovich (SZ) selected cluster samples have been found to include a greater fraction of disturbed systems than X-ray selected samples. In this paper we determine eight morphological parameters for the Planck Early Sunyaev-Zeldovich (ESZ) objects observed with XMM-Newton. We found that two parameters, concentration and centroid shift, are the best to distinguish between relaxed and disturbed systems. For each parameter we provide the values that allow selecting the most relaxed or most disturbed objects from a sample. We found that there is no mass dependence on the cluster dynamical state. By comparing our results with what was obtained with REXCESS clusters, we also confirm that the ESZ clusters indeed tend to be more disturbed, as found by previous studies. | URI: | http://hdl.handle.net/20.500.12386/26660 | URL: | https://iopscience.iop.org/article/10.3847/1538-4357/aa855f | ISSN: | 0004-637X | DOI: | 10.3847/1538-4357/aa855f | Bibcode ADS: | 2017ApJ...846...51L | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Lovisari_2017_ApJ_846_51.pdf | PDF editoriale | 8.42 MB | Adobe PDF | View/Open |
Page view(s)
54
checked on Sep 1, 2024
Download(s)
26
checked on Sep 1, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.