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Photoevaporation and high-eccentricity migration created the sub-Jovian desert

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Title: Photoevaporation and high-eccentricity migration created the sub-Jovian desert
Authors: Owen, JE
Lai, D
Item Type: Journal Article
Abstract: The mass–period or radius–period distribution of close-in exoplanets shows a paucity of intermediate mass/size (sub-Jovian) planets with periods ≲3 d. We show that this sub-Jovian desert can be explained by the photoevaporation of highly irradiated sub-Neptunes and the tidal disruption barrier for gas giants undergoing high-eccentricity migration. The distinctive triangular shape of the sub-Jovain desert results from the fact that photoevaporation is more effective closer to the host star, and that in order for a gas giant to tidally circularize closer to the star without tidal disruption it needs to be more massive. Our work indicates that super-Earths/mini-Neptunes and hot-Jupiters had distinctly separate formation channels and arrived at their present locations at different times.
Issue Date: 1-Oct-2018
Date of Acceptance: 29-Jun-2018
URI: http://hdl.handle.net/10044/1/61933
DOI: https://dx.doi.org/10.1093/mnras/sty1760
ISSN: 0035-8711
Publisher: Oxford University Press (OUP)
Start Page: 5012
End Page: 5021
Journal / Book Title: Monthly Notices of the Royal Astronomical Society
Volume: 479
Issue: 4
Copyright Statement: © 2018 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society
Sponsor/Funder: The Royal Society
Funder's Grant Number: UF150412
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
planets and satellites: dynamical evolution and stability
planets and satellites: formation
HOT JUPITERS
SUPER-EARTHS
EXTRASOLAR PLANETS
GIANT PLANETS
X-RAY
MASS
EVAPORATION
EVOLUTION
EXOPLANETS
BINARY
0201 Astronomical And Space Sciences
Publication Status: Published
Open Access location: https://arxiv.org/abs/1807.00012
Online Publication Date: 2018-07-05
Appears in Collections:Physics
Astrophysics
Faculty of Natural Sciences



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