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

被引：20

作者：

Kozakis, Thea ^{[1
]}

Kaltenegger, Lisa ^{[1
]}

Hoard, D. W. ^{[2
]}

机构：

[1] Cornell Univ, Carl Sagan Inst, Ithaca, NY 14853 USA

[2] Eureka Sci, Oakland, CA USA

来源：

ASTROPHYSICAL JOURNAL | 2018年 / 862卷 / 01期

关键词：

astrobiology; planets and satellites: atmospheres; planets and satellites: terrestrial planets; stars: evolution; white dwarfs; DIGITAL SKY SURVEY; ULTRAVIOLET-RADIATION; MINOR PLANET; STARS; EVOLUTION; GREENHOUSE; MODELS; SYSTEM; DEBRIS; LIGHT;

D O I：

10.3847/1538-4357/aacbc7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An Earth-like exoplanet orbiting a white dwarf (WD) would be exposed to different UV environments than Earth, influencing both its atmospheric photochemistry and UV surface environment. Through the use of a coupled 1D climate-photochemistry code, we model atmospheres of Earth-like planets in the habitable zone (HZ) of WDs for surface temperatures between 6000 and 4000 K, corresponding to about 7 billion years of WD evolution, and discuss the evolution of planetary models in the HZ during that evolution.

引用

页数：12

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