Thu, 10.10.2019 14:00

Potential Habitability of Rocky Planets around Red Dwarfs

Ein Vortrag von Kevin France (University of Colorado) im Rahmen der IWF-Seminarreihe Winter/Frühjahr 2019/20

High-energy photons and particles from stars regulate the atmospheric temperature structure and photochemistry on orbiting planets, influencing the long-term stability of planetary atmospheres and the production of potential "biomarker" gases. Rocky planets orbiting low-mass stars (M dwarfs) will likely be the first exoplanets directly probed for signs of life, however, relatively few observational and theoretical constraints exist on the high-energy irradiance from typical (i.e., weakly active) M dwarf exoplanet host stars. In this talk, I will describe results from an ongoing panchromatic survey (Chandra/XMM/Hubble/ground) of M and K dwarf exoplanet hosts. The MUSCLES Treasury Survey combines UV, X-ray, and optical observations, reconstructed Lyman-alpha and EUV (10-90 nm) radiation, and next-generation stellar atmosphere models to provide realistic inputs for modeling the stability and climate on potentially habitable planets around red dwarfs.



Kevin France
University of Colorado

10. Oktober 2019, 15.30 Uhr

Vortragssaal U.a.4, Untergeschoss