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Kepler's Multiple Planet SystemsAmong the 1800 Kepler targets that have candidate planets, 20% have two or more candidate planets. While most of these objects have not yet been confirmed as true planets, several considerations strongly suggest hat the vast majority of these multi-candidate systems are true planetary systems. Virtually all candidate systems are stable, as tested by numerical integrations (assuming a nominal mass-radius relationship). Statistical studies performed on these candidates reveal a great deal about the architecture of planetary systems, including the typical spacing of orbits and flatness of planetary systems. The distribution of observed period ratios shows that the vast majority ofcandidate pairs are neither in nor near low-order mean motion resonances. Nonetheless, there are small but statistically significant excesses of candidate pairs both in resonance and spaced slightly too far apart to be in resonance, particularly near the 2:1 resonance. The characteristics of the confirmed Kepler multi-planet systems will also be discussed.
Document ID
20190002610
Acquisition Source
Ames Research Center
Document Type
Abstract
Authors
Lissauer, Jack (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
April 19, 2019
Publication Date
April 17, 2019
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
ARC-E-DAA-TN67246
Meeting Information
Meeting: Colloquium at Columbia University in New York City
Location: New York, NY
Country: United States
Start Date: April 17, 2019
Sponsors: Columbia Univ.
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Technical Review
Single Expert

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