DE WIT, Julien; DOYON, René; RACKHAM, Benjamin; LIM, Olivia; DUCROT, Elsa; KREIDBERG, Laura; BENNEKE, Björn; RIBAS, Ignasi; BERARDO, David; NIRAULA, Prajwal; IYER, Aishwarya; SHAPIRO, Alexander; KOSTOGRYZ, Nadiia; WITZKE, Veronika; GILLON, Michaël; AGOL, Eric; MEADOWS, Victoria; BURGASSER, Adam; OWEN, James; FORTNEY, Jonathan; SELSIS, Franck; BELLO-ARUFE, Aaron; BOLMONT, Emeline; COWAN, Nicolas; DONG, Chuanfei; DRAKE, Jeremy; GARCIA, Lionel; GREENE, Thomas; HAWORTH, Thomas; HU, Renyu; KANE, Stephen; KERVELLA, Pierre; KOLL, Daniel; KRISSANSEN-TOTTON, Joshua; LAGAGE, Pierre-Olivier; LICHTENBERG, Tim; LUSTIG-YAEGER, Jacob; LINGAM, Manasvi; TURBET, Martin; SEAGER, Sara; BARKAOUI, Khalid; BELL, Taylor; BURDANOV, Artem; CADIEUX, Charles; CHARNAY, Benjamin; CLOUTIER, Ryan; COOK, Neil; CORREIA, Alexandre; DANG, Lisa; DAYLAN, Tansu; DELREZ, Laetitia; EDWARDS, Billy; FAUCHEZ, Thomas; FLAGG, Laura; FRASCHETTI, Federico; HAQQ-MISRA, Jacob; HUANG, Ziyu; IRO, Nicolas; JAYAWARDHANA, Ray; JEHIN, Emmanuel; JIN, Meng; KITE, Edwin; KITZMANN, Daniel; KRAL, Quentin; LAFRENIÈRE, David; LIBERT, Anne-Sophie; LIU, Beibei; MOHANTY, Subhanjoy; MORRIS, Brett; MURRAY, Catriona; PIAULET, Caroline; POZUELOS, Francisco; RADICA, Michael; RANJAN, Sukrit; RATHCKE, Alexander; ROY, Pierre-Alexis; SCHWIETERMAN, Edward; TURNER, Jake; TRIAUD, Amaury; WAY, Michael

doi:10.48550/arXiv.2310.15895

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2023

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Ultra-cool dwarf stars are abundant, long-lived, and uniquely suited to enable the atmospheric study of transiting terrestrial companions with JWST. Amongst them, the most prominent is the M8.5V star TRAPPIST-1 and its seven planets, which have been the favored targets of eight JWST Cycle 1 programs. While Cycle 1 observations have started to yield preliminary insights into the planets, they have also revealed that their atmospheric exploration requires a better understanding of their host star. Here, we propose a roadmap to characterize the TRAPPIST-1 system -- and others like it -- in an efficient and robust manner. We notably recommend that -- although more challenging to schedule -- multi-transit windows be prioritized to constrain stellar heterogeneities and gather up to 2$\times$ more transits per JWST hour spent. We conclude that in such systems planets cannot be studied in isolation by small programs, thus large-scale community-supported programs should be supported to enable the efficient and robust exploration of terrestrial exoplanets in the JWST era.< Réduire

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Earth and Planetary Astrophysics (astro-ph.EP)

Instrumentation and Methods for Astrophysics (astro-ph.IM)

Solar and Stellar Astrophysics (astro-ph.SR)

FOS: Physical sciences

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A roadmap to the efficient and robust characterization of temperate terrestrial planet atmospheres with JWST

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