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Tides Alone Cannot Explain Kepler Planets Close to 2:1 MMR
Ari Silburt, Hanno Rein
A number of Kepler planet pairs lie just wide of first-order mean motion resonances (MMRs). Tides have been frequently proposed to explain these pileups, but it is still an ongoing…
High Order Harmonics in Light Curves of Kepler Planets
Caden Armstrong, Hanno Rein
The Kepler mission was launched in 2009 and has discovered thousands of planet candidates. In a recent paper, Esteves et al. (2013) found a periodic signal in the light curves of K…
WHFast: A fast and unbiased implementation of a symplectic Wisdom-Holman integrator for long term gravitational simulations
Hanno Rein, Daniel Tamayo
We present WHFast, a fast and accurate implementation of a Wisdom-Holman symplectic integrator for long-term orbit integrations of planetary systems. WHFast is significantly faster…
Dynamical Stability of Imaged Planetary Systems in Formation: Application to HL Tau
Daniel Tamayo, Amaury H. M. J. Triaud, Kristen Menou +1
A recent ALMA image revealed several concentric gaps in the protoplanetary disk surrounding the young star HL Tau. We consider the hypothesis that these gaps are carved by planets,…
Reanalysis of radial velocity data from the resonant planetary system HD128311
Hanno Rein
The multi-planetary system HD128311 hosts at least two planets. Its dynamical formation history has been studied extensively in the literature. We reanalyse the latest radial veloc…