Spectroimaging of young planets with ELT-HARMONI
Abstract
HARMONI, the first-light VIS & near-IR integral field spectrograph (IFS) of the ELT, will include a high-contrast imaging mode. Thanks to the high angular resolution of the ELT, to the spectral resolution of HARMONI (R=3500-18000), and to its adaptive optics system, this mode will enable the spectral characterization of young giant planets, in particular to constrain their formation processes. By creating 10^{-6} contrast at minimum separations of 50-100mas in the H & K bands, it will make it possible to study a much larger number of planets than with the current high-contrast instruments, and thanks to the GAIA catalogue, it will help measuring their mass-luminosity relation. This contrast level assumes that classical post-processing techniques will be used, but lower contrast values could be obtained by using the high spectral resolution of HARMONI to look through the speckle noise, especially at close separation.
- Publication:
-
SF2A-2019: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics
- Pub Date:
- December 2019
- Bibcode:
- 2019sf2a.conf..205C
- Keywords:
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- exoplanets;
- high-contrast imaging;
- high spectral resolution;
- ELT