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Observations and modeling of Earth’s transmission spectrum through lunar eclipses:

Observations and modeling of Earth’s transmission spectrum through lunar eclipses: A window to transiting exoplanet characterization. E. Palle, M.R. Zapatero, P. Montañes-Rodriguez, R. Barrena, A. Garcia-Muñoz. Lunar eclipse August 16th 2008.

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Observations and modeling of Earth’s transmission spectrum through lunar eclipses:

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  1. Observations and modeling of Earth’s transmission spectrum through lunar eclipses: A window to transiting exoplanet characterization. E. Palle, M.R. Zapatero, P. Montañes-Rodriguez, R. Barrena, A. Garcia-Muñoz

  2. Lunar eclipse August 16th 2008

  3. We observed the Earth transmission spectrum during a lunar eclipse NOT, Visible, 0.4-1 μm WHT, Near-IR, 0.9-2.5 μm La Palma, Canaries

  4. A penumbral eclipse seen from the Moon Lunar explorer "KAGUYA" (SELENE) on February 10, 2009 Moon here JAXA/NHK

  5. Umbra Penumbra Brigth Moon

  6. Umbra/Bright Umbra Bright Hα

  7. Earth’s Transmission Spectrum The pale reddot Palle et al, Nature, 2009

  8. Evolution of the Earth’s Transmission Spectrum during the eclipse: ZJ

  9. Evolution of the Earth’s Transmission Spectrum during the eclipse: O2 dimer band

  10. Modeling efforts: Constructing a true model Earth – moon distance ∞ = exoplanets Non-radial symmetry Direct transmission Diffraction, refraction Diffuse light JAXA/NHK

  11. Modeling efforts: The alpha value 0 0.5 0.7

  12. Transmission models: Rayleigh atmosphere Garcia-Muñoz et al, in preparation

  13. Transmission models: Rayleigh atmosphere Garcia-Muñoz et al, in preparation Difference

  14. Transmission models: Rayleigh + Clouds (8km) + aerosols (Direct +Diffuse) Garcia-Muñoz et al, in preparation Diffuse light insensitive to alpha and dominant at short wavelengths

  15. Oxygen complexes in the Earth’s atmosphere: Oxygen dimers Oxygen at visible wavelengths Intensity reversal again explained trough diffuse light contribution

  16. Oxygen complexes in the Earth’s atmosphere: Oxygen dimers Oxygen at near-IR wavelengths O2•O2 O2•N2

  17. 0.5 1.0 1.5 2.0 2.5 Earth’s Reflectance Spectrum: Earthshine NOT, Visible, 0.4-1 μm WHT, Near-IR, 0.9-2.5 μm La Palma, Canaries μm

  18. Reflected spectrum Transmission Spectrum Blue planet? O2 O2•O2 O2•N2 CH4 CO2 CH4 O2•O2 CO2 O2 0.5 1.0 1.5 2.0 2.5 μm Palle et al, 2009

  19. M8 star + 1 Earth ... with the E-ELT ~5 h ~25 h ~50 h ~150 h Palle et al, ApJ, submitted 20, 100, 500, 1000 spectra combined - SNR 1000

  20. M8 star + 1 Earth ... with the E-ELT ~5 h ~25 h ~50 h ~150 h Palle et al, ApJ, submitted 20, 100, 500, 1000 spectra combined - SNR 1000

  21. Earth’s transmission spectrum in the mid-IR

  22. VISIR @ VLT3 CRIRES @ VLT1 COMICS @ SUBARU SPEX @ IRTF Palomar & HST More Moon Soon ... 21st December 2010: 0.3 – 24 micron

  23. Thank you

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