Spectroscopy of Young, Widely Separated Exoplanets
Abstract
We will obtain NIRSpec IFU R=1000 spectra of a sample of exoplanets that are spatially sufficiently separated from their primary star to allow direct imaging spectroscopy. The sample will comprise exoplanets of different masses and ages, most of which have already been studied spectroscopically in the 1.0 - 2.5 μm range. NIRSpec will allow to extend the measurements into the 3 - 5 μm range with a substantial sensitivity advantage over competing ground-based systems.
The main goal is understanding the spectra of self-luminous, fairly young exoplanets below the deuterium burning limit throughout their contraction and cooling. Can metallicity or isotopic composition be determined and do those give clues about the formation mechanism? We will observe the following exoplanets: HR 8799 b, c, and d 2MJ2236 b GU Psc b HD 106906 b, as part of Program 1277- Publication:
-
JWST Proposal. Cycle 1
- Pub Date:
- June 2017
- Bibcode:
- 2017jwst.prop.1188H