A possible bifurcation in atmospheres of strongly irradiated stars and planets

被引：352

作者：

Hubeny, I

Burrows, A

Sudarsky, D

机构：

[1] Natl Opt Astron Observ, Tucson, AZ 85726 USA

[2] NASA, Astron & Solar Phys Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Univ Arizona, Dept Astron, Tucson, AZ 85721 USA

[4] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 594卷 / 02期

关键词：

binaries : general; planetary systems; planets and satellites : general; radiative transfer; stars : atmospheres; stars; low-mass; brown dwarfs;

D O I：

10.1086/377080

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that under certain circumstances the differences between the absorption mean and Planck mean opacities can lead to multiple solutions for an LTE atmospheric structure. Since the absorption and Planck mean opacities are not expected to differ significantly in the usual case of radiative equilibrium, nonirradiated atmospheres, the most interesting situations in which the effect may play a role are strongly irradiated stars and planets, and also possibly structures in which there is a significant deposition of mechanical energy, such as stellar chromospheres and accretion disks. We have presented an illustrative example of a strongly irradiated giant planet in which the bifurcation effect is predicted to occur for a certain range of distances from the star.

引用

页码：1011 / 1018

页数：8

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