UV Surface Environments and Atmospheres of Earth-like Planets Orbiting White Dwarfs
arXiv:1806.11200 · doi:10.3847/1538-4357/aacbc7
Abstract
An Earth-like exoplanet orbiting a white dwarf would be exposed to different UV environments than Earth, influencing both its atmospheric photochemistry and UV surface environment. Using a coupled 1D climate-photochemistry code we model atmospheres of Earth-like planets in the habitable zone of white dwarfs for surface temperatures between 6000 K and 4000 K, corresponding to about 7 billion years of white dwarf evolution, as well as discuss the evolution of planetary models in the habitable zone during that evolution.
Accepted by ApJ, 23 pages, 8 figures, 6 tables