Kepler planet masses and eccentricities from TTV analysis

S Hadden, Y Lithwick - The Astronomical Journal, 2017 - iopscience.iop.org
We conduct a uniform analysis of the transit timing variations (TTVs) of 145 planets from 55
Kepler multiplanet systems to infer planet masses and eccentricities. Eighty of these planets …

Densities and eccentricities of 139 Kepler planets from transit time variations

S Hadden, Y Lithwick - The Astrophysical Journal, 2014 - iopscience.iop.org
We extract densities and eccentricities of 139 sub-Jovian planets by analyzing transit time
variations (TTVs) obtained by the Kepler mission through Quarter 12. We partially …

Numerical and analytical modeling of transit timing variations

S Hadden, Y Lithwick - The Astrophysical Journal, 2016 - iopscience.iop.org
We develop and apply methods to extract planet masses and eccentricities from observed
transit timing variations (TTVs). First, we derive simple analytic expressions for the TTV that …

Transit timing observations from Kepler. I. Statistical analysis of the first four months

EB Ford, JF Rowe, DC Fabrycky… - The Astrophysical …, 2011 - iopscience.iop.org
The architectures of multiple planet systems can provide valuable constraints on models of
planet formation, including orbital migration, and excitation of orbital eccentricities and …

Density and eccentricity of Kepler planets

Y Wu, Y Lithwick - The Astrophysical Journal, 2013 - iopscience.iop.org
We analyze the transit timing variations (TTV) obtained by the Kepler mission for 22 sub-
Jovian planet pairs (19 published, 3 new) that lie close to mean motion resonances. We find …

Transit timing to first order in eccentricity

E Agol, K Deck - The Astrophysical Journal, 2016 - iopscience.iop.org
Characterization of transiting planets with transit timing variations (TTVs) requires
understanding how to translate the observed TTVs into masses and orbital elements of the …

Transit timing observations from Kepler. II. Confirmation of two multiplanet systems via a non-parametric correlation analysis

EB Ford, DC Fabrycky, JH Steffen… - The Astrophysical …, 2012 - iopscience.iop.org
We present a new method for confirming transiting planets based on the combination of
transit timing variations (TTVs) and dynamical stability. Correlated TTVs provide evidence …

Eccentricity from transit photometry: small planets in Kepler multi-planet systems have low eccentricities

V Van Eylen, S Albrecht - The Astrophysical Journal, 2015 - iopscience.iop.org
Solar system planets move on almost circular orbits. In strong contrast, many massive gas
giant exoplanets travel on highly elliptical orbits, whereas the shape of the orbits of smaller …

Secure mass measurements from transit timing: 10 Kepler exoplanets between 3 and 8 M⊕ with diverse densities and incident fluxes

D Jontof-Hutter, EB Ford, JF Rowe… - The Astrophysical …, 2016 - iopscience.iop.org
We infer dynamical masses in eight multiplanet systems using transit times measured from
Kepler's complete data set, including short-cadence data where available. Of the 18 …

Transit timing observations from Kepler. V. Transit timing variation candidates in the first sixteen months from polynomial models

EB Ford, D Ragozzine, JF Rowe… - The Astrophysical …, 2012 - iopscience.iop.org
Transit timing variations provide a powerful tool for confirming and characterizing transiting
planets, as well as detecting non-transiting planets. We report the results of an updated …