Kravtsov et al. use mock Chandra images of cluster simulations to compare X-ray estimators for the total mass and show that the new estimator Yx is remarkably good.
Werner et al. look at very hot AGB stars which are thought to have consumed their H shells exposing nucleosynthesis products.
Ascasibar & Markevitch use simulations of cluster mergers to show that cold fronts are caused by the sloshing of the cool gas in the central gravitational potential well.
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