About

Dr. Fegley and Dr. Lodders apply chemistry to key problems in astronomy, cosmochemistry, and planetary science.  Experimental studies and theoretical models are used to study a wide range of problems related to the chemistry taking place in these environments:

  • atmospheres and circumstellar envelopes around cool stars
  • brown dwarfs (so-called failed stars)
  • extrasolar gas giant planets
  • Jupiter’s satellite Io
  • meteorite parent bodies
  • the gas giant planets Jupiter, Saturn, Neptune, Uranus
  • the lower atmosphere and surface of Venus
  • the solar nebula
  • Titan, which is Saturn’s largest satellite

A list of some of our ongoing and recent projects is given below.

  • atmospheric chemistry of the brown dwarf Gliese 229 B
  • formation of silicon carbide grains around red giant stars
  • iron metal oxidation in the solar nebula
  • the oxygen isotope mixing (OIM) model for the composition of Mars
  • tremolite decomposition on Venus
  • volcanic gas chemistry on Io