Exoplanet atmospheres

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Climate Stabilization Targets: Emissions, Concentrations, and Impacts over Decades to Millennia

National Academies Press, 2011

Authors:

Committee on Stabilization Targets for Atmospheric Greenhouse Gas Concentrations, Board on Atmospheric Sciences and Climate, Division on Earth and Life Studies, National Research Council

Abstract:

The book quantifies the outcomes of different stabilization targets for greenhouse gas concentrations using analyses and information drawn from the scientific literature.

Transit spectrophotometry of the exoplanet HD 189733b

Astronomy & Astrophysics EDP Sciences 526 (2011) A12-A12

Authors:

J-M Désert, D Sing, A Vidal-Madjar, G Hébrard, D Ehrenreich, A Lecavelier des Etangs, V Parmentier, R Ferlet, GW Henry
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Planet Formation Around M-dwarfs: From Young Disks to Planets

(2011)

Authors:

I Pascucci, G Laughlin, BS Gaudi, G Kennedy, K Luhman, S Mohanty, J Birkby, B Ercolano, P Plavchan, A Skemer
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A PALETTE OF CLIMATES FOR GLIESE 581g

The Astrophysical Journal Letters American Astronomical Society 726:1 (2011) l8
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Achieving high contrasts with slicer based integral field spectrographs

AO for ELT 2011 - 2nd International Conference on Adaptive Optics for Extremely Large Telescopes (2011)

Authors:

G Salter, N Thatte, M Tecza, F Clarke

Abstract:

We demonstrate experimentally that slicer based integral field spectrographs are an attractive choice for the next generation of exoplanet direct detection instruments. By propagating a single simulated speckle though a slicer based integral field spectrograph (IFS) and performing the post processing technique of spectral deconvolution we are able to achieve a speckle rejection factor of ∼600 in broadband images (and ∼100 in individual wavelength channels) with contrasts only appearing to be limited by calibration errors in the IFS datacube. This is over an order of magnitude improvement on the current state-of-the-art and well within the requirements of EPICS (Exo Planet Imaging Camera and Spectrograph for the E-ELT) for post coronagraphic speckle rejection thus proving that slicers will not impose a limit on the achievable contrast. When using prior knowledge of the diffraction-limited size of real objects we further improve the speckle rejection factor such that it exceeds 103.