101 citations · 608 across the 15 of their papers we have counts for
13 papers · 1 filter
Measuring the Orbital Parameters of Radial Velocity Systems in Mean Motion Resonance---a Case Study of HD 200964
M. M. Rosenthal, W. Jacobson-Galan, B. Nelson +8
The presence of mean motion resonances (MMRs) complicates analysis and fitting of planetary systems observed through the radial velocity (RV) technique. MMR can allow planets to re…
Sensitivity Analyses of Exoplanet Occurrence Rates from Kepler and Gaia
Megan Shabram, Natalie Batalha, Susan E. Thompson +11
We infer the number of planets-per-star as a function of orbital period and planet size using archival data products with updated stellar properties from the Data R…
Forming Gliese 876 Through Smooth Disk Migration
Adam M. Dempsey, Benjamin E. Nelson
We run a suite of dissipative N-body simulations to determine which regions of phase space for smooth disk migration are consistent with the GJ876 system, an M-dwarf hosting three…
Quantifying the Bayesian Evidence for a Planet in Radial Velocity Data
Benjamin E. Nelson, Eric B. Ford, Johannes Buchner +5
We present results from a data challenge posed to the radial velocity (RV) community: namely, to quantify the Bayesian "evidence" for n={0,1,2,3} planets in a set of synthetically…
Systematic mischaracterization of exoplanetary system dynamical histories from a model degeneracy near mean-motion resonance
John H. Boisvert, Benjamin E. Nelson, Jason H. Steffen
There is a degeneracy in the radial velocity exoplanet signal between a single planet on an eccentric orbit and a two-planet system with a period ratio of 2:1. This degeneracy coul…
Evidence for Two Hot Jupiter Formation Paths
Benjamin E. Nelson, Eric B. Ford, Frederic A. Rasio
Disk migration and high-eccentricity migration are two well-studied theories to explain the formation of hot Jupiters. The former predicts that these planets can migrate up until t…
The conjectured S-type retrograde planet in nu Octantis: more evidence including four years of iodine-cell radial velocities
D. J. Ramm, B. E. Nelson, M. Endl +6
We report 1212 radial-velocity (RV) measurements obtained in the years 2009-2013 using an iodine cell for the spectroscopic binary nu Octantis (K1III/IV). This system (a_bin~2.6 au…
An Empirically Derived Three-Dimensional Laplace Resonance in the Gliese 876 Planetary System
Benjamin E. Nelson, Paul Robertson, Matthew J. Payne +5
We report constraints on the three-dimensional orbital architecture for all four planets known to orbit the nearby M dwarf Gliese 876 based solely on Doppler measurements and deman…
The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-Period Planets
Y. Katherina Feng, Jason T. Wright, Benjamin Nelson +5
We present an update to seven stars with long-period planets or planetary candidates using new and archival radial velocities from Keck-HIRES and literature velocities from other t…
The 55 Cancri Planetary System: Fully Self-Consistent N-body Constraints and a Dynamical Analysis
Benjamin E. Nelson, Eric B. Ford, Jason T. Wright +5
We present an updated study of the planets known to orbit 55 Cancri A using 1,418 high-precision radial velocity observations from four observatories (Lick, Keck, Hobby-Eberly Tele…
RUN DMC: An efficient, parallel code for analyzing Radial Velocity Observations using N-body Integrations and Differential Evolution Markov chain Monte Carlo
Benjamin E. Nelson, Eric B. Ford, Matthew J. Payne
In the 20+ years of Doppler observations of stars, scientists have uncovered a diverse population of extrasolar multi-planet systems. A common technique for characterizing the orbi…
Swarm-NG: a CUDA Library for Parallel n-body Integrations with focus on Simulations of Planetary Systems
Saleh Dindar, Eric B. Ford, Mario Juric +5
We present Swarm-NG, a C++ library for the efficient direct integration of many n-body systems using highly-parallel Graphics Processing Unit (GPU), such as NVIDIA's Tesla T10 and…
Ground-based multisite observations of two transits of HD 80606b
A. Shporer, J. N. Winn, S. Dreizler +41
We present ground-based optical observations of the September 2009 and January 2010 transits of HD 80606b. Based on 3 partial light curves of the September 2009 event, we derive a…