Welcome


I am a Postdoctoral Fellow in Astrophysics at the Space Telescope Science Institute. My research focus is the formation and evolution of galaxies, which I study by performing numerical simulations on supercomputers such as the Odyssey cluster, as well as by analyzing data taken with instruments aboard the Hubble Space Telescope, at the W.M. Keck Observatory, and others.

A visual demo of some of my recent work is here, and an overview of my work (under construction) can be found here. If you are looking for images or data, see my list of files on this page. Feel free to contact me with questions or requests.

News

Recently I've been involved in a collaboration (The Illustris Project) to create and analyze large-scale simulations of galaxy formation. I summarized my perspective on this project in a short post for STScI's research blog An Eye on the Universe: Observing Galaxy Formation in Simulations.

Our first paper appeared in Nature in May 2014 (doi:10.1038/nature13316), and the accepted article is also available open-access (arXiv/1405.1418). Part of my contribution was to generate a side-by-side comparison of the Illustris Simulation with the Hubble Space Telescope Ultra Deep Field (XDF data release):

On the left is a 2.8 by 2.8 arcminute image of the UDF at three wavelengths, and on the right is an image of the same volume from a random sight-line through the Illustris Simulation. The mock image is in the same units as the real one, and was processed to closely mimic the effects of telescope resolution and noise. Broadly speaking, we find a mix of galaxy shapes and colors reminiscient of the real universe. Only recently have hydrodynamic simulations of galaxy formation reached the size and accuracy required to make such a direct comparison.