Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-05-05
Astronomy and Astrophysics
Astrophysics
Submitted to MNRAS; 11 pages, 11 postscript figures
Scientific paper
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.
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Melott Adrian L.
Motl Patrick M.
Rahman Nurur
Shandarin Sergei F.
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