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Direct Imaging in Reflected Light: Characterization of Older, Temperate Exoplanets With 30-m Telescopes

Artigau, Étienne and Bernstein, Rebecca A. and Brandt, Timothy and Chilcote, Jeffrey and Close, Laird and Crossfield, Ian and Delorme, Jacques-Robert and Dressing, Courtney and Fitzgerald, Michael P. and Fortney, Jonathan and Howard, Andrew and Frazin, Richard and Jovanovic, Nemanja and Konopacky, Quinn and Lozi, Julien and Males, Jared R. and Marois, Christian and Mazin, Benjamin A. and Millar-Blanchaer, Max A. and Morzinski, Katie M. and Roberts, Lewis and Serabyn, Eugene and Vasisht, Gautam and Wallace, J. Kent and Wang, Ji (2018) Direct Imaging in Reflected Light: Characterization of Older, Temperate Exoplanets With 30-m Telescopes. . (Submitted)

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Direct detection, also known as direct imaging, is a method for discovering and characterizing the atmospheres of planets at intermediate and wide separations. It is the only means of obtaining spectra of non-transiting exoplanets. Characterizing the atmospheres of planets in the <5 AU regime, where RV surveys have revealed an abundance of other worlds, requires a 30-m-class aperture in combination with an advanced adaptive optics system, coronagraph, and suite of spectrometers and imagers - this concept underlies planned instruments for both TMT (the Planetary Systems Imager, or PSI) and the GMT (GMagAO-X). These instruments could provide astrometry, photometry, and spectroscopy of an unprecedented sample of rocky planets, ice giants, and gas giants. For the first time habitable zone exoplanets will become accessible to direct imaging, and these instruments have the potential to detect and characterize the innermost regions of nearby M-dwarf planetary systems in reflected light. High-resolution spectroscopy will not only illuminate the physics and chemistry of exo-atmospheres, but may also probe rocky, temperate worlds for signs of life in the form of atmospheric biomarkers (combinations of water, oxygen and other molecular species). By completing the census of non-transiting worlds at a range of separations from their host stars, these instruments will provide the final pieces to the puzzle of planetary demographics. This whitepaper explores the science goals of direct imaging on 30-m telescopes and the technology development needed to achieve them.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Artigau, Étienne0000-0003-3506-5667
Brandt, Timothy0000-0003-2630-8073
Chilcote, Jeffrey0000-0001-6305-7272
Close, Laird0000-0002-2167-8246
Crossfield, Ian0000-0002-1835-1891
Dressing, Courtney0000-0001-8189-0233
Fitzgerald, Michael P.0000-0002-0176-8973
Fortney, Jonathan0000-0002-9843-4354
Howard, Andrew0000-0001-8638-0320
Konopacky, Quinn0000-0002-9936-6285
Lozi, Julien0000-0002-3047-1845
Marois, Christian0000-0002-4164-4182
Millar-Blanchaer, Max A.0000-0001-6205-9233
Roberts, Lewis0000-0003-3892-2900
Vasisht, Gautam0000-0002-1871-6264
Wang, Ji0000-0002-4361-8885
Group:Astronomy Department
Record Number:CaltechAUTHORS:20181203-133957018
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91404
Deposited By: Tony Diaz
Deposited On:03 Dec 2018 22:30
Last Modified:09 Oct 2019 21:16

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