The exoplanet eccentricity distribution from Kepler planet candidates
Article
Article Title | The exoplanet eccentricity distribution from Kepler planet candidates |
---|---|
ERA Journal ID | 1074 |
Article Category | Article |
Authors | Kane, Stephen R. (Author), Ciardi, David R. (Author), Gelino, Dawn M. (Author) and von Braun, Kaspar (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 425 (1), pp. 757-762 |
Number of Pages | 6 |
Year | 2012 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/j.1365-2966.2012.21627.x |
Web Address (URL) | https://academic.oup.com/mnras/article/425/1/757/1004680 |
Abstract | The eccentricity distribution of exoplanets is known from radial velocity surveys to be divergent from circular orbits beyond 0.1au. This is particularly the case for large planets where the radial velocity technique is most sensitive. The eccentricity of planetary orbits can have a large effect on the transit probability and subsequently the planet yield of transit surveys. The Kepler mission is the first transit survey that probes deep enough into period space to allow this effect to be seen via the variation in transit durations. We use the Kepler planet candidates to show that the eccentricity distribution is consistent with that found from radial velocity surveys to a high degree of confidence. We further show that the mean eccentricity of the Kepler candidates decreases with decreasing planet size indicating that smaller planets are preferentially found in low-eccentricity orbits. |
Keywords | Planetary systems; Techniques: photometric; Techniques: radial velocities; |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2012 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | California Institute of Technology (Caltech), United States |
National Aeronautics and Space Administration (NASA), United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q431y/the-exoplanet-eccentricity-distribution-from-kepler-planet-candidates
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