This is the website for Prof. Jacob Bean's group in the Department of Astronomy & Astrophysics at the University of Chicago. The main theme of the group's research is the observational study of planets outside the Solar System ("exoplanets"). We use ground- and space-based telescopes to detect and characterize these worlds. We are also engaged in building new instruments as part of our push towards eventually identifying other Earth-like planets.

See here for a recent talk summarizing some of the group's research.


12/12/2018: Congratulations to Andreas Seifahrt and Julian Stürmer on the installation and first light of the MAROON-X front end unit on the Gemini-N telescope!

12/06/2018: We have detected helium in the atmosphere of the Neptune-sized exoplanet HAT-P-11b. See the paper by Mansfield et al. (ApJ Letters) and the AAS news story.

05/23/2018: See our latest SPIE conference proceeding for an update on MAROON-X. We remain on track to commission the instrument on Gemini-N in the first quarter of 2019.