This is the unofficial website of the NSF AAPF program, run by the fellows themselves. For official information about the fellowship, please go to the NSF program announcement.
I study how galaxies form and evolve through the merger and gas accretion process. I am also leading an infrared survey with Palomar to trace how much stellar mass formed by redshift z ~ 1 using 50+ of Palomar 5 meter time. I have developed new tools, including a morphological system called CAS, which measures the concentration (C), asymmetry (A) and clumpiness (S) of the light from galaxies imaged with HST. I am using these tools, combined with stellar and dynamical mass estimates of galaxies to determine the physics behind galaxy formation and when this formation occurred.
I write astronomy articles for popular magazines, such as Astronomy and Scientific American. I wrote a column for the Astronomical Society of Pacific's "Mercury Magazine" until 2004.