Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20717707d&link_type=abstract
American Astronomical Society Meeting 207, #177.07; Bulletin of the American Astronomical Society, Vol. 37, p.1450
Astronomy and Astrophysics
Astronomy
Scientific paper
X-ray observations of galaxy clusters provides unique insight into the dynamical state of these massive objects. Structure is formed hierarchically and clusters are formed from the aggregation of smaller structures such as groups and poor clusters. Identifying clusters in the early stages of a merger will provide constraints on the early stages of N-body/hydrodynamical simulations of merging clusters. Measurable parameters such as galaxy positions and velocities, X-ray centers, surface brightness profiles of the gas, temperature structure and mass of the interacting gas are all key quantities for determining the dynamical state of the cluster. Mapping the temperature distribution is especially important since matching this with the results of cluster simulations give insights into the state of the merger. Here we present the morphology and temperature for the double cluster Abell 222 /Abell 223 derived from a 50 ksec Chandra ACIS-I observation.
Davis David S.
Henriksen Mark J.
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