292 citations · 1.7k across the 26 of their papers we have counts for
8 papers · 1 filter
Evolution of the Exoplanet Size Distribution: Forming Large Super-Earths Over Billions of Years
Trevor J. David, Gabriella Contardo, Angeli Sandoval +9
The radius valley, a bifurcation in the size distribution of small, close-in exoplanets, is hypothesized to be a signature of planetary atmospheric loss. Such an evolutionary pheno…
Refining the transit timing and photometric analysis of TRAPPIST-1: Masses, radii, densities, dynamics, and ephemerides
Eric Agol, Caroline Dorn, Simon L. Grimm +32
We have collected transit times for the TRAPPIST-1 system with the Spitzer Space Telescope over four years. We add to these ground-based, HST and K2 transit time measurements, and…
Stability Constrained Characterization of Multiplanet Systems
Daniel Tamayo, Christian Gilbertson, Daniel Foreman-Mackey
Many discovered multiplanet systems are tightly packed. This implies that wide parameter ranges in masses and orbital elements can be dynamically unstable and ruled out. We present…
A Fast, 2D Gaussian Process Method Based on Celerite: Applications to Transiting Exoplanet Discovery and Characterization
Tyler Gordon, Eric Agol, Daniel Foreman-Mackey
Gaussian processes (GPs) are commonly used as a model of stochastic variability in astrophysical time series. In particular, GPs are frequently employed to account for correlated s…
The Assembly History of M87 Through Radial Variations in Chemical Abundances of its Field Star And Globular Cluster Populations
Alexa Villaume, Daniel Foreman-Mackey, Aaron J. Romanowsky +2
We present an extensive study of spectroscopically-derived chemical abundances for M87 and its globular cluster (GC) system. Using observations from the Mitchell spectrograph at Mc…
A planet within the debris disk around the pre-main-sequence star AU Microscopii
Peter Plavchan, Thomas Barclay, Jonathan Gagné +84
AU Microscopii (AU Mic) is the second closest pre main sequence star, at a distance of 9.79 parsecs and with an age of 22 million years. AU Mic possesses a relatively rare and spat…