Abstract
Transiting planets like HD209458b offer a unique opportunity to scrutinize their atmospheric composition and structure. Transit spectroscopy probes the transition region between the day and night sides, called the limb. We present a re-analysis of existing HST/STIS transmission spectra of HD209458b's atmosphere. From these observations we identify H2 Rayleigh scattering, derive the absolute Sodium abundance and quantify its depletion in the upper atmosphere, extract a stratospheric T-P profile and find a temperature inversion and explain broad band absorptions with the presence of TiO and VO molecules. © 2009 International Astronomical Union.
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CITATION STYLE
Désert, J. M., Vidal-Madjar, A., Lecavelier Des Etangs, A., Sing, D., Ehrenreich, D., Hébrard, G., & Ferlet, R. (2008). Atmospheric composition and structure of HD209458b. In Proceedings of the International Astronomical Union (Vol. 4, pp. 524–527). https://doi.org/10.1017/S1743921308027117
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