1 code implementation • 2 Oct 2020 • Eric Agol, Caroline Dorn, Simon L. Grimm, Martin Turbet, Elsa Ducrot, Laetitia Delrez, Michael Gillon, Brice-Olivier Demory, Artem Burdanov, Khalid Barkaoui, Zouhair Benkhaldoun, Emeline Bolmont, Adam Burgasser, Sean Carey, Julien de Wit, Daniel Fabrycky, Daniel Foreman-Mackey, Jonas Haldemann, David M. Hernandez, James Ingalls, Emmanuel Jehin, Zachary Langford, Jeremy Leconte, Susan M. Lederer, Rodrigo Luger, Renu Malhotra, Victoria S. Meadows, Brett M. Morris, Francisco J. Pozuelos, Didier Queloz, Sean M. Raymond, Franck Selsis, Marko Sestovic, Amaury H. M. J. Triaud, Valerie Van Grootel
We have collected transit times for the TRAPPIST-1 system with the Spitzer Space Telescope over four years.
Earth and Planetary Astrophysics
2 code implementations • 8 Aug 2019 • Eric Agol, Rodrigo Luger, Daniel Foreman-Mackey
We provide improved analytic expressions for the uniform, linear, and quadratic limb-darkened cases, as well as novel expressions for higher order integer powers of limb darkening.
Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics
1 code implementation • 24 Jul 2019 • Aaron Hamann, Benjamin T. Montet, Daniel C. Fabrycky, Eric Agol, Ethan Kruse
In Campaign 5 data, a single planet was discovered with an orbital period of $2. 6$~days and large transit timing variations due to an unknown perturber.
Earth and Planetary Astrophysics
1 code implementation • 22 Jul 2019 • Jason D. Eastman, Joseph E. Rodriguez, Eric Agol, Keivan G. Stassun, Thomas G. Beatty, Andrew Vanderburg, B. Scott Gaudi, Karen A. Collins, Rodrigo Luger
We highlight several potential pitfalls in exoplanet modeling, including the handling of eccentricity in transit-only fits, that the standard exoplanet convention for $\omega$ uses a left-handed coordinate system, contrary to most modern textbooks, how to avoid an important degeneracy when allowing negative companion masses, and a widely unappreciated, potential 10-minute ambiguity in the reported transit times.
Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics
3 code implementations • 28 Mar 2017 • Daniel Foreman-Mackey, Eric Agol, Sivaram Ambikasaran, Ruth Angus
We present a mathematical description of the method and compare it to existing scalable Gaussian Process methods.
Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics Solar and Stellar Astrophysics Data Analysis, Statistics and Probability Applications
1 code implementation • 17 Feb 2017 • Rodrigo Luger, Ethan Kruse, Daniel Foreman-Mackey, Eric Agol, Nicholas Saunders
On average, EVEREST 2. 0 light curves have 10-20% higher photometric precision than those in the previous version, yielding the highest precision light curves at all Kp magnitudes of any publicly available K2 catalog.
Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics
1 code implementation • 2 Jul 2016 • Rodrigo Luger, Eric Agol, Ethan Kruse, Rory Barnes, Andrew Becker, Daniel Foreman-Mackey, Drake Deming
We present EVEREST, an open-source pipeline for removing instrumental noise from K2 light curves.
Earth and Planetary Astrophysics
3 code implementations • 4 Sep 2015 • Eric Agol, Katherine Deck
Characterization of transiting planets with transit timing variations (TTVs) requires understanding how to translate the observed TTVs into masses and orbital elements of the planets.
Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics
1 code implementation • 1 Nov 2010 • Nicolas B. Cowan, Eric Agol
We present a semi-analytic model atmosphere for close-in exoplanets that captures the essential physics of phase curves: orbital and viewing geometry, advection, and re-radiation.
Earth and Planetary Astrophysics
