A Chandra Study of the Core of the Nearby Cluster Abell 576

Details A Chandra Study of the Core of the Nearby Cluster Abell 576 A Chandra Study of the Core of the Nearby Cluster Abell 576

2004-02-10

arxiv.org/abs/astro-ph/0402229v1

Astrophys.J. 607 (2004) 220-225

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures (3 color). For version with high resolution figures, see http://hea-www.harvard.edu/~jkempner/research/pape

Scientific paper

10.1086/383407

We present data from a Chandra observation of the nearby cluster of galaxies Abell 576. The core of the cluster shows a significant departure from dynamical equilibrium. We show that this core gas is most likely the remnant of a merging subcluster, which has been stripped of much of its gas, depositing a stream of gas behind it in the main cluster. The unstripped remnant of the subcluster is characterized by a different temperature, density and metalicity than that of the surrounding main cluster, suggesting its distinct origin. Continual dissipation of the kinetic energy of this minor merger may be sufficient to counteract most cooling in the main cluster over the lifetime of the merger event.

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