J/MNRAS/420/L23 Non-resonant Kepler planetary systems (Veras+, 2012)
Identifying non-resonant Kepler planetary systems.
Veras D., Ford E.B.
<Mon. Not. R. Astron. Soc., 420, L23-L27 (2012)>
=2012MNRAS.420L..23V 2012MNRAS.420L..23V
ADC_Keywords: Stars, double and multiple ; Planets
Keywords: planets and satellites: dynamical evolution and stability
Abstract:
The Kepler mission has discovered a plethora of multiple transiting
planet candidate exosystems, many of which feature putative pairs of
planets near mean motion resonance commensurabilities. Identifying
potentially resonant systems could help guide future observations and
enhance our understanding of planetary formation scenarios. We develop
and apply an algebraic method to determine which Kepler two-planet
systems cannot be in a first-fourth order resonance, given the
current, publicly available data. This method identifies when any
potentially resonant angle of a system must circulate. We identify and
list 70 near-resonant systems which cannot actually reside in
resonance, assuming a widely used formulation for deriving planetary
masses from their observed radii and that these systems do not contain
unseen bodies that affect the interactions of the observed planets.
This work strengthens the argument that a high fraction of
exoplanetary systems may be near resonance but not actually in
resonance.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 18 70 Non-resonant two-planet Kepler systems
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See also:
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
J/ApJS/197/2 : Transit timing observations from Kepler. I. (Ford+, 2011)
J/ApJS/197/8 : Kepler's candidate multiple transiting planets (Lissauer+ 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- KOI KOI number
6- 7 I2 --- N Number of near-resonant instances
9- 11 A3 --- C Closest j1:|j2| resonance value (N:N)
13- 18 F6.4 --- beta Maximum β value (1)
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Note (1): The larger the value of β the closer the system is
to having parameters which could admit resonance.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 22-Sep-2012