2004/05/05 by Nurur Rahman, Sergei F. Shandarin, S. F. Shandarin +7
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0405097
Submitted to MNRAS; 11 pages, 11 postscript figures
arxiv created 2004/05/05 · openalex publication_date 2004/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have studied morphological evolution in clusters simulated in the adiabatic limit and with radiative cooling. Cluster morphology in the redshift range, 0 < z < 0.5, is quantified by multiplicity and ellipticity. In terms of ellipticity, our result indicates slow evolution in cluster shapes compared to those observed in the X-ray and optical wavelengths. The result is consistent with Floor, Melott & Motl (2003). In terms of multiplicity, however, the result indicate relatively stronger evolution (compared to ellipticity but still weaker than observation) in the structure of simulated clusters suggesting that for comparative studies of simulation and observation, sub-structure measures are more sensitive than the shape measures. We highlight a few possibilities responsible for the discrepancy in the shape evolution of simulated and real clusters.