The Influences of Stellar Activity on Planetary Atmospheres

Colin Johnstone

Publications: Contribution to bookContribution to proceedings

Abstract

On evolutionary timescales, the atmospheres of planets evolve due to interactions with the planet's surface and with the planet's host star. Stellar X-ray and EUV (='XUV') radiation is absorbed high in the atmosphere, driving photochemistry, heating the gas, and causing atmospheric expansion and mass loss. Atmospheres can interact strongly with the stellar winds, leading to additional mass loss. In this review, I summarise some of the ways in which stellar output can influence the atmospheres of planets. I will discuss the importance of simultaneously understanding the evolution of the star's output and the time dependent properties of the planet's atmosphere.
Original languageEnglish
Title of host publicationLiving Around Active Stars
Subtitle of host publicationProceedings of the International Astronomical Union, IAU Symposium
EditorsD Nandy, A Valio, P Petit
PublisherInternational Astronomical Union
Pages168 - 179
Number of pages12
Volume12
DOIs
Publication statusPublished - 2016

Austrian Fields of Science 2012

  • 103003 Astronomy
  • 103004 Astrophysics

Keywords

  • ENVIRONMENT
  • EVOLUTION
  • MARS
  • MASS
  • SOLAR
  • SUN
  • TIME
  • VENUS

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