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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 720045.0, MPI für Astronomie / Publikationen_mpia
Direct detection of exoplanets in the 3-10 μm range with E-ELT/METIS
Authors:Quanz, S. P.; Crossfield, I.; Meyer, M. R.; Schmalzl, E.; Held, J.
Date of Publication (YYYY-MM-DD):2015
Title of Journal:International Journal of Astrobiology
Issue / Number:2
Start Page:279
End Page:289
Audience:Not Specified
Abstract / Description:We quantify the scientific potential for exoplanet imaging with the mid-infrared E-ELT Imager and Spectrograph (METIS) foreseen as one of the instruments of the European Extremely Large Telescope (E-ELT). We focus on two main science cases: (1) the direct detection of known gas giant planets found by radial velocity (RV) searches; and (2) the direct detection of small (1-4 R) planets around the nearest stars. Under the assumptions made in our modelling, in particular on the achievable inner working angle and sensitivity, our analyses reveal that within a reasonable amount of observing time METIS is able to image >20 already known, RV-detected planets in at least one filter. Many more suitable planets with dynamically determined masses are expected to be found in the coming years with the continuation of RV-surveys and the results from the GAIA astrometry mission. In addition, by extrapolating the statistics for close-in planets found by Kepler, we expect METIS might detect ~10 small planets with equilibrium temperatures between 200 and 500 K around the nearest stars. This means that (1) METIS will help constrain atmospheric models for gas giant planets by determining for a sizable sample their luminosity, temperature and orbital inclination; and (2) METIS might be the first instrument to image a nearby (super-) Earth-sized planet with an equilibrium temperature near that expected to enable liquid water on a planet surface.
Free Keywords:high angular resolution; infrared; instrumentation; planetary systems
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
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