247 citations · 1.3k across the 31 of their papers we have counts for
31 papers
Masses, Revised Radii, and a Third Planet Candidate in the "Inverted" Planetary System Around TOI-1266
Ryan Cloutier, Michael Greklek-McKeon, Serena Wurmser +40
Is the population of close-in planets orbiting M dwarfs sculpted by thermally driven escape or is it a direct outcome of the planet formation process? A number of recent empirical…
Scattered Disk Dynamics: The Mapping Approach
Sam Hadden, Scott Tremaine
We derive, and discuss the properties of, a symplectic map for the dynamics of bodies on nearly parabolic orbits. The orbits are perturbed by a planet on a circular, coplanar orbit…
Mercury's chaotic secular evolution as a subdiffusive process
Dorian S. Abbot, Robert J. Webber, David M. Hernandez +2
Mercury's orbit can destabilize, generally resulting in a collision with either Venus or the Sun. Chaotic evolution can cause g1 to decrease to the approximately constant value of…
Intra-system uniformity: a natural outcome of dynamical sculpting
Caleb Lammers, Sam Hadden, Norman Murray
There is evidence that exoplanet systems display intra-system uniformity in mass, radius, and orbital spacing (like ``peas in a pod'') when compared with the system-to-system varia…
Self-Consistent Spin, Tidal and Dynamical Equations of Motion in the REBOUNDx Framework
Tiger Lu, Hanno Rein, Daniel Tamayo +4
We have introduced self-consistent spin, tidal and dynamical equations of motion into REBOUNDx, a library of additional effects for the popular N-body integrator REBOUND. The equat…
Simple physics and integrators accurately reproduce Mercury instability statistics
Dorian S. Abbot, David M. Hernandez, Sam Hadden +3
The long-term stability of the Solar System is an issue of significant scientific and philosophical interest. The mechanism leading to instability is Mercury's eccentricity being p…
celmech: A Python package for celestial mechanics
Sam Hadden, Daniel Tamayo
We present celmech, an open-source Python package designed to facilitate a wide variety of celestial mechanics calculations. The package allows users to formulate and integrate equ…
The Effects of Disk Induced Apsidal Precession on Planets Captured into Mean Motion Resonance
Zachary Murray, Sam Hadden, Matthew J. Holman
The process of migration into resonance capture has been well studied for planetary systems where the gravitational potential is generated exclusively by the star and planets. Howe…
The Criterion for Chaos in Three-Planet Systems
Jeremy Rath, Sam Hadden, Yoram Lithwick
We establish the criterion for chaos in three-planet systems, for systems similar to those discovered by the Kepler spacecraft. Our main results are as follows: (i) The simplest cr…
Rare Event Sampling Improves Mercury Instability Statistics
Dorian S. Abbot, Robert J. Webber, Sam Hadden +2
Due to the chaotic nature of planetary dynamics, there is a non-zero probability that Mercury's orbit will become unstable in the future. Previous efforts have estimated the probab…
How Close are Compact Multi-Planet Systems to the Stability Limit?
Samuel W. Yee, Daniel Tamayo, Samuel Hadden +1
Transit surveys have revealed a significant population of compact multi-planet systems, containing several sub-Neptune-mass planets on close-in, tightly-packed orbits. These system…
Significant improvement in planetary system simulations from statistical averaging
David M. Hernandez, Eric Agol, Matthew J. Holman +1
Symplectic integrators are widely used for the study of planetary dynamics and other -body problems. In a study of the outer Solar system, we demonstrate that individual symplec…
A Bayesian neural network predicts the dissolution of compact planetary systems
Miles Cranmer, Daniel Tamayo, Hanno Rein +5
Despite over three hundred years of effort, no solutions exist for predicting when a general planetary configuration will become unstable. We introduce a deep learning architecture…
Mildly-Hierarchical triple dynamics and applications to the outer solar system
Hareesh Gautham Bhaskar, Gongjie Li, Sam Hadden +2
Three-body interactions are ubiquitous in astrophysics. For instance, Kozai-Lidov oscillations in hierarchical triple systems have been studied extensively and applied to a wide ra…
Predicting the long-term stability of compact multiplanet systems
Daniel Tamayo, Miles Cranmer, Samuel Hadden +11
We combine analytical understanding of resonant dynamics in two-planet systems with machine learning techniques to train a model capable of robustly classifying stability in compac…
Modeling Radial Velocity Data of Resonant Planets to Infer Migration Histories
Sam Hadden, Matthew J. Payne
A number of giant planet pairs discovered by the radial velocity method with period ratios may reside in mean motion resonances. Convergent orbital migration and reson…
Are long-term -body simulations reliable?
David M. Hernandez, Sam Hadden, Junichiro Makino
-body integrations are used to model a wide range of astrophysical dynamics, but they suffer from errors which make their orbits diverge exponentially in time from the correct o…
An Integrable Model for the Dynamics of Planetary Mean Motion Resonances
Sam Hadden
I consider the dynamics of mean motion resonances between pairs of co-planar planets and derive a new integrable Hamiltonian model for planets' resonant motion. The new model gener…
The L 98-59 System: Three Transiting, Terrestrial-Sized Planets Orbiting a Nearby M-dwarf
Veselin B. Kostov, Joshua E. Schlieder, Thomas Barclay +112
We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-sized planets transiting L 98-59 (TOI-175, TIC 307210830) -- a bright M dwarf at a distanc…
Near-resonance in a system of sub-Neptunes from TESS
Samuel N. Quinn, Juliette C. Becker, Joseph E. Rodriguez +78
We report the Transiting Exoplanet Survey Satellite () detection of a multi-planet system orbiting the K0 dwarf TOI 125. We find evidence for up to five planets, wit…
Prospects for TTV Detection and Dynamical Constraints with TESS
Sam Hadden, Thomas Barclay, Matthew J. Payne +1
We consider the potential for the Transiting Exoplanet Survey Satellite (TESS) to detect transit timing variations (TTVs) during both its nominal and extended mission phases. Build…
Prospects for Refining Kepler TTV Masses using TESS Observations
Max Goldberg, Sam Hadden, Matthew J. Payne +1
In this paper we investigate systems previously identified to exhibit transit timing variations (TTVs) in Kepler data, with the goal of predicting the expected improvements to the…
A Compact Multi-Planet System With A Significantly Misaligned Ultra Short Period Planet
Joseph E. Rodriguez, Juliette C. Becker, Jason D. Eastman +20
We report the discovery of a compact multi-planet system orbiting the relatively nearby (78pc) and bright () K-star, K2-266 (EPIC248435473). We identify up to six possible p…
The Secular Dynamics of TNOs and Planet Nine Interactions
Gongjie Li, Samuel Hadden, Matthew Payne +1
The existence of Planet Nine has been suggested to explain the pericenter clustering of extreme trans-Neptunian objects (TNOs). However, the underlying dynamics involving Planet Ni…