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The kinematics of intracluster planetary nebulae and the on-going subcluster merger in the Coma cluster core

Gerhard, Ortwin; Arnaboldi, Magda; Freeman, Kenneth; Okamura, Sadanori; Kashikawa, Nobunari; Yasuda, Naoki

Description

Aims. The Coma cluster is the richest and most compact of the nearby clusters, yet there is growing evidence that its formation is still on-going. A sensitive probe of this evolution is the dynamics of intracluster stars, which are unbound from galaxies while the cluster forms, according to cosmological simulations. Methods. With a new multi-slit imaging spectroscopy technique pioneered at the 8.2 m Subaru telescope and FOCAS, we have detected and measured the line-of-sight velocities of 37...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
URI: http://hdl.handle.net/1885/25411
Source: Astronomy and Astrophysics
DOI: 10.1051/0004-6361:20066484

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