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arXiv 0704.1114astro-ph
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太阳系外行星大气吸收特征的识别

Identification of Absorption Features in an Extrasolar Planet Atmosphere

T. S. Barman

摘要:

通过将行星的透射光谱模型与Knutson等人(2007年)发表的最新多波长日食深度测量(从0.3到1微米)进行比较,确定了HD 209458 b大气中的水吸收。一个无云的模型,其中包括太阳丰度,雨出的冷凝物,钠和钾的光电离是在良好的协议与整个套日食深度测量从紫外到近红外。约束被放置在冷凝物去除重力沉降,散装金属丰度,和吸收恒星通量的重新分配。还与Charbonneau等人(2002)的钠测量进行了比较。

英文摘要:

Water absorption is identified in the atmosphere of HD209458b by comparing models for the planet's transmitted spectrum to recent, multi-wavelength, eclipse-depth measurements (from 0.3 to 1 microns) published by Knutson et al. (2007). A cloud-free model which 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. (2002) sodium measurements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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