Subhalos in the real Universe: satellite galaxy-galaxy lensing
Cristobal Sifon
Leiden University
I present galaxy-galaxy lensing measurements of the total masses of
satellite galaxies in galaxy groups and clusters, obtained by combining
high-quality imaging data with large spectroscopic galaxy catalogs. I focus
on the overlap between the Kilo-Degree Survey (KiDS) and the Galaxy And
Mass Assembly (GAMA) survey and present preliminary results on massive
clusters from the Canadian Cluster Comparison Project (CCCP). The high
purity of the resulting satellite catalogs allow us to cleanly interpret
the galaxy-galaxy lensing signal as coming from the subhalos that host
these galaxies. I compare these results with predictions from numerical
simulations and results for central galaxies, and discuss the potential of
satellite galaxy-galaxy lensing measurements as probes of galaxy formation
and cosmology.
Date: | Thursday, 29 October 2015 |
Time: | 15:30 |
Where: | McGill University |
| McGill Space Institute (3550 University), Conference Room |
Contact: | Robert Rutledge |
|