Identification of absorption features in an extrasolar planet atmosphere

被引：115
作者：
Barman, T. [1 ]
机构：
[1] Lowell Observ, Flagstaff, AZ 86001 USA
来源：
ASTROPHYSICAL JOURNAL | 2007年 / 661卷 / 02期
关键词：
planetary systems; radiative transfer; stars : individual (HD 209458);
D O I：
10.1086/518736
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Water absorption is identified in the atmosphere of HD 209458b by comparing models for the planet's transmitted spectrum to recent, multiwavelength, eclipse-depth measurements (from 0.3 to 1 mu m) published by Knutson et al. A cloud-free model that includes solar abundances, rainout of condensates, and photoionization of sodium and potassium is in good agreement with the entire set of eclipse-depth measurements from the ultraviolet to near-infrared. Constraints are placed on condensate removal by gravitational settling, the bulk metallicity, and the redistribution of absorbed stellar flux. Comparisons are also made to the Charbonneau et al. sodium measurements.
引用
收藏
页码：L191 / L194
页数：4
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