Research
I work on a wide range of problems in observational cosmology and galaxy evolution, much of it built on the largest spectroscopic and imaging surveys of the sky. Most of my current work centers on the Dark Energy Spectroscopic Instrument (DESI) and the DESI Legacy Imaging Surveys.
Observational CosmologyMapping the expansion history of the universe with DESI.
Galaxy Star Formation and AssemblyHow galaxies form their stars, build up their mass, and enrich their gas over cosmic time.
Surveys and Data ReleasesSurveys, atlases, and public data releases built for the community.
Research Support
My research and the Siena undergraduates who work with me have been supported continuously since 2012 by the Department of Energy, the National Science Foundation, NASA, and Lawrence Berkeley National Laboratory.
- Cosmic Frontier Science at Siena University (2024–2027); Improving Cosmological Precision by Mitigating DESI Redshift Survey Systematics (2019–2024)
- Collaborative Research: RUI: Tracing Galaxy Quenching in the Cosmic Web With Spatially-Resolved Star-Formation Maps
Past support
- Subawards supporting the DESI Legacy Imaging Surveys, DESI commissioning and survey validation, and DESI data assembly
- Probing Quenching in the Cosmic Web using Spatially Resolved Star-formation Maps from WISE and GALEX
- Collaborative Research: CDS&E: New Image Resampling Techniques for MaNGA in the NASA Sloan Atlas
- RUI: Stellar Mass Content of Galaxy Dark Matter Halos
- Eight Hubble Space Telescope, Spitzer, and SOFIA programs on lensed galaxies at cosmic dawn, compact starbursts and galactic winds, and gas stripping in galaxy clusters