Kevin Hardegree-ullman
Staff Scientist at Caltech
Arcadia, California, United States
Summary
👤
Senior🎓
Top SchoolKevin Hardegree-Ullman is a Staff Scientist at Caltech/IPAC’s NASA Exoplanet Science Institute with 11 years of experience applying ground- and space-based observations to study exoplanets, M dwarfs, brown dwarfs, and stellar populations. He combines hands-on telescope operations and archival spectroscopic, photometric, and astrometric analysis to produce homogeneous stellar property catalogs that improve exoplanet characterization. At Caltech he helps maintain the NASA Exoplanet Archive, bringing a data-curation mindset to reproducible science and community-facing tools. His background spans postdoctoral research at Arizona and Caltech, a PhD in astrophysics, and early roles operating observatory facilities—skills that give him both observational rigor and practical systems experience. Colleagues rely on him for translating messy, heterogeneous datasets into well-calibrated inputs for population and follow-up studies of the coldest stars and their planets.
10 years of coding experience
12 years of employment as a software developer
The University of ArizonaDoctor of Philosophy (PhD) Astrophysics, Doctor of Philosophy (PhD) Astrophysics at The University of Toledo
Github Skills (18)
simulation7
simulation-framework6
python5
spectra5
astronomy4
cosmology4
gaussian-processes4
astrophysics4
mcmc4
bayesian-inference4
time-series3
inference2
scalable2
orbital-mechanics1
random-walk1
Programming languages (1)
Github contributions (5)
kevinkhu/vespa-vm
Jan 2021 - May 2021
Contributions:3 commits, 2 pushes, 1 branch in 4 months
kevinkhu/exoplanet_atmospheres
Apr 2021 - May 2021
Contributions:18 pushes, 1 branch in 1 month
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