Astrophysics Luncheon Seminar
Cosmology from Gas and Stars of Galaxy Clusters: Results from Rhapsody-G Hydrodynamical Simulations
Presented by Hao-Yi Wu
California Institute of Technology
Monday, June 22, 2015
12:00 noon in 169-336
The gas and stellar content of galaxy clusters provides valuable information about cosmology. Galaxy number, stellar mass, and gas mass of clusters are useful for calibrating the total mass of clusters; the gas mass fraction of galaxy clusters provides distance information. In this talk, I will introduce a new set of hydrodynamical simulations - Rhapsody-G - which aims for pinning down the scatter and covariances of gas and stellar properties of galaxy clusters. I will present the discovery of several covariances between gas and stellar properties, and how these covariances can improve cluster mass calibration. I will also discuss how galaxy clusters closely resemble closed boxes even at small scales.
JPL Contact: Jorge Pineda (4-3347)