Computer Science
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2664r&link_type=abstract
Chandra proposal ID #10800424
Computer Science
Scientific paper
Recent studies have demonstrated that feedback by AGN has sufficient energy to halt condensation and cooling of the ICM. However recent Spitzer observations have shown that 30-50% of BCGs exhibit star formation and so this feedback is in some cases not sufficiently strong to completely stop condensation. We propose here to observe a few such objects. By comparing the structure and distribution of X-ray gas in BCGs hosting active star formation we will determine the conditions that lead to the failure of AGN feedback to quench condensation and so star formation. The combination of X-ray-derived gas cooling times and estimates of cavity power with IR-derived star formation rates will allow us to study the entire cycle of cooling, star formation and feedback in cluster cool cores.
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