Promises and Limitations - NASA

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Exoplanet Spectroscopy StatusFigure courtesy of M. SwainSwain et al. 2008HD 189733bEmissionHD 189733bTransmissionGrillmair et al. 20082
Some Outstanding Issues• What spectral features are really present?• Are observed strengths of spectral features due to intrinsicabundances or temperature profiles?– Distinguish temperatures, T profiles, compositions– Are ice giants overabundant in carbon / metals like Neptune?• How is energy absorbed and transported in highly irradiatedplanets?– Measure & determine causes of temperature inversions– Study transport via day / night side differences– Is there non-equilibrium chemistry?• Hydrocarbons like C 2H 2(acetylene), C 2H 6(ethane) indicate photochemicalproduction• What is the composition of mini-Neptune atmospheres?• Can Kepler Earth candidates (1 Me, 1AU) be confirmed?• Can we detect any features in Super/Earth atmospheres?3
Page 1: Exoplanet Transit and Eclipsespectr
Page 5 and 6: What are the optimum JWST targets?
Page 7 and 8: JWST Systematic Noise Estimates•
Page 9 and 10: HD 189733b Gas GiantH 2OH 2OH 2OCH
Page 11 and 12: 4 MIRI eclipses summedSingle transi
Page 13 and 14: Are Earth transmission spectra poss
Page 15 and 16: How to progress beyond individual p

Promises and Limitations - NASA

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