Habitable Zones & Global Climate

UV Surface Environments and Atmospheres of Earth-like Planets Orbiting White Dwarfs

By Keith Cowing
Press Release
astro-ph.EP
July 26, 2018
Filed under
UV Surface Environments and Atmospheres of Earth-like Planets Orbiting White Dwarfs
Earthlike planet circling a white dwarf
SpaceRef

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.

Thea Kozakis, Lisa Kaltenegger, D. W. Hoard
(Submitted on 28 Jun 2018)

Comments: Accepted by ApJ, 23 pages, 8 figures, 6 tables
Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:1806.11200 [astro-ph.EP] (or arXiv:1806.11200v1 [astro-ph.EP] for this version)
Submission history
From: Thea Kozakis
[v1] Thu, 28 Jun 2018 21:27:34 GMT (494kb,D)
https://arxiv.org/abs/1806.11200
Astrobiology

SpaceRef co-founder, Explorers Club Fellow, ex-NASA, Away Teams, Journalist, Space & Astrobiology, Lapsed climber.