Since its discovery in 2016, planetary scientists have been excited about TRAPPIST-1, a system where seven Earth-sized rocky planets orbit a cool star. Three of the planets are in the […]
TRAPPIST-1
Posted inPress Release, TRAPPIST-1
Tides Between The TRAPPIST-1 Planets
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 […]
Posted inPress Release, TRAPPIST-1
Tidal Heating and the Habitability of the TRAPPIST-1 Exoplanets
Context. New estimates of the masses and radii of the seven planets orbiting the ultracool M-dwarf TRAPPIST-1 star permit improved modelling of their compositions, heating by tidal dissipation, and removal […]
Posted inPress Release, TRAPPIST-1
Predicting the Extreme Ultraviolet Radiation Environment of Exoplanets Around Low-Mass Stars: the TRAPPIST-1 System
The high energy radiation environment around M dwarf stars strongly impacts the characteristics of close-in exoplanet atmospheres, but these wavelengths are difficult to observe due to geocoronal and interstellar contamination. […]
Posted inPress Release, TRAPPIST-1
New Climate Models of TRAPPIST-1's Seven Intriguing Worlds
Not all stars are like the Sun, so not all planetary systems can be studied with the same expectations. New research from a University of Washington-led team of astronomers gives […]
Posted inPress Release, TRAPPIST-1
Constraining the Environment and Habitability of TRAPPIST-1
The planetary system of TRAPPIST-1, discovered in 2016-2017, is a treasure-trove of information. Thanks to a combination of observational techniques, we have estimates of the radii and masses of the […]
Posted inPress Release, TRAPPIST-1
Evolved Climates and Observational Discriminants for the TRAPPIST-1 Planetary System
The TRAPPIST-1 planetary system provides an unprecedented opportunity to study terrestrial exoplanet evolution with the James Webb Space Telescope (JWST) and ground-based observatories. Since M dwarf planets likely experience extreme […]
Posted inPress Release, TRAPPIST-1
Updated Compositional Models of the TRAPPIST-1 Planets
After publication of our initial mass-radius-composition models for the TRAPPIST-1 system in Unterborn et al. (2018), the planet masses were updated in Grimm et al. (2018). We had originally adopted […]
Posted inPress Release, TRAPPIST-1
TRAPPIST-1 Planets Provide Clues To The Nature Of Habitable Worlds
TRAPPIST-1 is an ultra-cool red dwarf star that is slightly larger, but much more massive, than the planet Jupiter, located about 40 light-years from the sun in the constellation Aquarius. […]
Posted inHabitable Zones
Atmospheric Reconnaissance of the Habitable-zone Earth-sized Planets Orbiting TRAPPIST-1
Seven temperate Earth-sized exoplanets readily amenable for atmospheric studies transit the nearby ultracool dwarf star TRAPPIST-1. Their atmospheric regime is unknown and could range from extended primordial hydrogen-dominated to depleted […]