The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations

  title={The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations},
  author={Alfred Vidal-Madjar and Luc Arnold and David Ehrenreich and Roger Ferlet and Alain Lecavelier des Etangs and F. Bouchy and Damien S{\'e}gransan and Isabelle Boisse and Guillaume H'ebrard and Claire Moutou and J.-M. D'esert and David K. Sing and R. Cabanac and Christian Nitschelm and Xavier Bonfils and Xavier Delfosse and Morgan Desort and Rodrigo F. D'iaz and A. Eggenberger and Thierry Forveille and Anne-Marie Lagrange and Christophe Lovis and Francesco A. Pepe and Christian Perrier and Fr'ed'eric Pont and Nuno C. Santos and St{\'e}phane Udry},
  journal={Astronomy and Astrophysics},
Context. An important goal within the quest for detecting an Earth-like extrasolar planet, will be to identify atmospheric gaseous bio-signatures. Aims. Observations of the light transmitted through the Earth’s atmosphere, as for an extrasolar planet, will be the first important step for future comparisons. We have completed observations of the Earth during a lunar eclipse, a unique situation similar to that of a transiting planet. We aim at showing what species could be detected in its… Expand
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The optical and near-infrared transmission spectrum of the Earth, obtained during a lunar eclipse, finds some biologically relevant atmospheric features that are weak in the reflection spectrum are much stronger in the transmission spectrum, and indeed stronger than predicted by modelling. Expand
Transmission spectroscopy of Earth-like exoplanets is a potential tool for habitability screening. Transiting planets are present-day "Rosetta Stones" for understanding extrasolar planets becauseExpand
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TiO and VO broad band absorption features in the optical spectrum of the atmosphere of the hot-Jupiter HD 209458b
Context. The presence of titanium oxide (TiO) and vanadium oxide (VO) gas phase species is searched for in the atmosphere of the hot Jupiter HD 209458b. Aims. We compared a model for the planet’sExpand
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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 μm)Expand