Results 11 to 20 of about 112 (111)
Stellar Parameters for Trappist-1 [PDF]
The Astrophysical Journal, 2018 Abstract TRAPPIST-1 is an ultracool dwarf star transited by seven Earth-sized planets, for which thorough characterization of atmospheric properties, surface conditions encompassing habitability, and internal compositions is possible with current and next-generation telescopes.
Valérie Van Grootel +14 more
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On the XUV Luminosity Evolution of TRAPPIST-1 [PDF]
The Astrophysical Journal, 2020 Abstract We model the long-term X-ray and ultraviolet (XUV) luminosity of TRAPPIST-1 to constrain the evolving high-energy radiation environment experienced by its planetary system. Using a Markov Chain Monte Carlo (MCMC) method, we derive probabilistic constraints for TRAPPIST-1's stellar and XUV evolution that account for observational
David P. Fleming +3 more
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The Carbon-deficient Evolution of TRAPPIST-1c
The Astrophysical Journal, 2023 Abstract Transiting planets orbiting M dwarfs provide the best opportunity to study the atmospheres of rocky planets with current facilities. As JWST enters its second year of science operations, an important initial endeavor is to determine whether these rocky planets have atmospheres at all.
Katie E. Teixeira +3 more
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Bistability of the Atmospheric Circulation on TRAPPIST-1e
The Planetary Science Journal, 2022 Abstract Using a 3D general circulation model, we demonstrate that a confirmed rocky exoplanet and a primary observational target, TRAPPIST-1e presents an interesting case of climate bistability. We find that the atmospheric circulation on TRAPPIST-1e can exist in two distinct regimes for a 1 bar nitrogen-dominated atmosphere.
Denis E. Sergeev +6 more
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Tides Between the TRAPPIST-1 Planets [PDF]
The Astrophysical Journal, 2019 Abstract The TRAPPIST-1 system is sufficiently closely packed that tides raised by one planet on another are significant. We investigate whether this source of tidal heating is comparable to eccentricity tides raised by the star. Assuming a homogeneous body with a Maxwell rheology, we find that energy dissipation from stellar tides ...
Hamish C. F. C. Hay, Isamu Matsuyama
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Predicting The Orbit of TRAPPIST-1i [PDF]
Research Notes of the AAS, 2018 AAS Research ...
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A study of Io’s sodium jets with the TRAPPIST telescopes
Astronomy & Astrophysics, 2023 Io is the most volcanically active body in the Solar System. This volcanic activity results in the ejection of material into Io’s atmosphere, which may then escape from the atmosphere to form various structures in the Jovian magnetosphere, including the plasma torus and clouds of neutral particles.
Alexander De Becker +9 more
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The tidal parameters of TRAPPIST-1b and c [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 Abstract The TRAPPIST-1 planetary system consists of seven planets within 0.05 au of each other, five of which are in a multiresonant chain. These resonances suggest the system formed via planet migration; subsequent tidal evolution has damped away most of the initial eccentricities.
Brasser, Ramon +2 more
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The nature of the TRAPPIST-1 exoplanets [PDF]
Astronomy & Astrophysics, 2018 Context. The TRAPPIST-1 system hosts seven Earth-sized, temperate exoplanets orbiting an ultra-cool dwarf star. As such, it represents a remarkable setting to study the formation and evolution of terrestrial planets that formed in the same protoplanetary disk.
Grimm, Simon L. +25 more
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PROBING TRAPPIST-1-LIKE SYSTEMS WITH K2 [PDF]
The Astrophysical Journal Letters, 2016 ABSTRACT The search for small planets orbiting late M dwarfs holds the promise of detecting Earth-size planets for which their atmospheres could be characterized within the next decade. The recent discovery of TRAPPIST-1 entertains hope that these systems are common around hosts located at the bottom of the main sequence. In this Letter,
Demory, Brice-Olivier +4 more
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