The Transiting Exoplanet Community Early Release Science Program for JWST

Jacob L. Bean , Kevin B. Stevenson , Natalie M. Batalha , Zachory Berta-Thompson , Laura Kreidberg , Nicolas Crouzet , Bj\"orn Benneke , Michael R. Line

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David K. Sing Hannah R. Wakeford Heather A. Knutson Eliza M.-R. Kempton Jean-Michel D\'esert Ian Crossfield Natasha E. Batalha Julien de Wit Vivien Parmentier Joseph Harrington Julianne I. Moses Mercedes Lopez-Morales Munazza K. Alam Jasmina Blecic Giovanni Bruno Aarynn L. Carter John W. Chapman Leen Decin Diana Dragomir Thomas M. Evans Jonathan J. Fortney Jonathan D. Fraine Peter Gao Antonio Garc\'ia Mu\~noz Neale P. Gibson Jayesh M. Goyal Kevin Heng Renyu Hu Sarah Kendrew Brian M. Kilpatrick Jessica Krick Pierre-Olivier Lagage Monika Lendl Tom Louden Nikku Madhusudhan Avi M. Mandell Megan Mansfield Erin M. May Giuseppe Morello Caroline V. Morley Nikolay Nikolov Seth Redfield Jessica E. Roberts Everett Schlawin Jessica J. Spake Kamen O. Todorov Angelos Tsiaras Olivia Venot William C. Waalkes Peter J. Wheatley Robert T. Zellem Daniel Angerhausen David Barrado Ludmila Carone Sarah L. Casewell Patricio E. Cubillos Mario Damiano Miguel de Val-Borro Benjamin Drummond Billy Edwards Michael Endl Nestor Espinoza Kevin France John E. Gizis Thomas P. Greene Thomas K. Henning Yucian Hong James G. Ingalls Nicolas Iro Patrick G.J. Irwin Tiffany Kataria Fred Lahuis J\'er\'emy leconte Jorge Lillo-Box Stefan Lines Joshua D. Lothringer Luigi Mancini Franck Marchis Nathan Mayne Enric Palle Emily Rauscher Ga\"el Roudier Evgenya L. Shkolnik John Southworth Mark R. Swain Jake Taylor Johanna Teske Giovanna Tinetti Pascal Tremblin Gregory S. Tucker Roy van Boekel Ingo P. Waldmann Ian C. Weaver Tiziano Zingales

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classification 🌌 astro-ph.EP

keywords jwsttransitingexoplanetprogramwillcommunityobservationsdata

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The James Webb Space Telescope (JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric compositions, structures, and dynamics of transiting exoplanets in unprecedented detail. However, the high-precision, time-series observations required for such investigations have unique technical challenges, and prior experience with other facilities indicates that there will be a steep learning curve when JWST becomes operational. In this paper we describe the science objectives and detailed plans of the Transiting Exoplanet Community Early Release Science (ERS) Program, which is a recently approved program for JWST observations early in Cycle 1. The goal of this project, for which the obtained data will have no exclusive access period, is to accelerate the acquisition and diffusion of technical expertise for transiting exoplanet observations with JWST, while also providing a compelling set of representative datasets that will enable immediate scientific breakthroughs. The Transiting Exoplanet Community ERS Program will exercise the time-series modes of all four JWST instruments that have been identified as the consensus highest priorities, observe the full suite of transiting planet characterization geometries (transits, eclipses, and phase curves), and target planets with host stars that span an illustrative range of brightnesses. The observations in this program were defined through an inclusive and transparent process that had participation from JWST instrument experts and international leaders in transiting exoplanet studies. Community engagement in the project will be centered on a two-phase Data Challenge that culminates with the delivery of planetary spectra, time-series instrument performance reports, and open-source data analysis toolkits in time to inform the agenda for Cycle 2 of the JWST mission.

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The Transiting Exoplanet Community Early Release Science Program for JWST

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