Wide-Orbit Exoplanet Demographics

The Kepler, K2 and TESS transit surveys are revolutionizing our understanding of planets orbiting close to their host stars and our understanding of exoplanet systems in general, but there remains a gap in our understanding of wide-orbit planets. This gap in our understanding must be filled if we ar...

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Bibliographic Details
Published in:arXiv.org 2019-03
Main Authors: Bennett, David P, Akeson, Rachel, Alibert, Yann, Anderson, Jay, Bachelet, Etienne, Beaulieu, Jean-Phillipe, Bellini, Andrea, Bhattacharya, Aparna, Boss, Alan, Bozza, Valerio, Bryson, Stephen, Buzasi, Derek, Novati, Sebastiano Calchi, Christiansen, Jessie, Domagal-goldman, Shawn D, Endl, Michael, Fulton, Benjamin J, Henderson, Calen B, Gaudi, B Scott, Johnson, Samson A, Koshimoto, Naoki, Meyer, Michael, Mulders, Gijs D, Mullally, Susan, Murray-Clay, Ruth, Nataf, David, Nielsen, Eric, Ngo, Henry, Pascucci, Ilaria, Penny, Matthew, Plavchan, Peter, Poleski, Radek, Clement Ranc, Raymond, Sean N, Rogers, Leslie, Sahlmann, Johannes, Sahu, Kailash C, Schlieder, Joshua, Shvartzvald, Yossi, Sozzetti, Alessandro, Street, Rachel, Sumi, Takahiro, Suzuki, Daisuke, Zimmerman, Neil
Format: Article
Language:English
Subjects:
Astrometry
Demographics
Extrasolar planets
Habitability
Microlenses
Planet detection
Planet formation
Planetary orbits
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Summary:The Kepler, K2 and TESS transit surveys are revolutionizing our understanding of planets orbiting close to their host stars and our understanding of exoplanet systems in general, but there remains a gap in our understanding of wide-orbit planets. This gap in our understanding must be filled if we are to understand planet formation and how it affects exoplanet habitability. We summarize current and planned exoplanet detection programs using a variety of methods: microlensing (including WFIRST), radial velocities, Gaia astrometry, and direct imaging. Finally, we discuss the prospects for joint analyses using results from multiple methods and obstacles that could hinder such analyses. We endorse the findings and recommendations published in the 2018 National Academy report on Exoplanet Science Strategy. This white paper extends and complements the material presented therein.
ISSN:2331-8422