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28 March 2024
 
  » arxiv » 0811.2496

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Diversity among other worlds: characterization of exoplanets by direct detection
J. Schneider ; A. Boccaletti ; A. Aylward ; P. Baudoz ; J. L. Beuzit ; R. Brown ; J. Cho ; K. Dohlen ; M. Ferrari ; R. Galicher ; O. Grasset ; L. Grenfell ; O. Guyon ; J. Hough ; M. Kasper ; Ch. Keller ; A. Longmore ; B. Lopez ; E. Martin ; D. Mawet ; F. Menard ; B. Merin ; E. Palle ; G. Perrin ; D. Pinfield ; E. Sein ; P. Shore ; Ch. Sotin ; A. Sozzetti ; D. Stam ; J. Surdej ; F. Tamburini ; G. Tinetti ; S. Udry ; C. Verinaud ; D. Walker ;
Date 15 Nov 2008
AbstractThe physical characterization of exoplanets will require to take spectra at several orbital positions. For that purpose, a direct imaging capability is necessary. Direct imaging requires an efficient stellar suppression mechanism, associated with an ultrasmooth telescope. We show that before future large space missions (interferometer, 4-8 m class coronograph, external occulter or Fresnel imager), direct imaging of giant planets and close-by super-Earth are at the cross-road of a high scientific interest and a reasonable feasibility. The scientific interest lies in the fact that super-Earths share common geophysical attributes with Earths. They already begin to be detected by radial velocity (RV) and, together with giant planets, they have a larger area than Earths, making them detectable with a 1.5-2 m class telescope in reflected light. We propose such a (space) telescope be a first step before large direct imaging missions.
Source arXiv, 0811.2496
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