TRAPPIST-1
Posted inPress Release, TRAPPIST-1
Two TRAPPIST-1 System Planets Are Potentially Habitable
Two exoplanets in the TRAPPIST-1 system have been identified as most likely to be habitable, a paper by PSI Senior Scientist Amy Barr says. The TRAPPIST-1 system has been of […]
Posted inHabitable Zones, Press Release, TRAPPIST-1
Stratosphere Circulation On Tidally Locked ExoEarths
Stratosphere circulation is important to interpret abundances of photo-chemically produced compounds like ozone that we aim to observe to assess habitability of exoplanets. We thus investigate a tidally locked ExoEarth […]
Posted inPress Release, TRAPPIST-1
The TRAPPIST-1 System: Orbital Evolution, Tidal Dissipation, Formation and Habitability
We study the dynamical evolution of the TRAPPIST-1 system under the influence of orbital circularization through tidal interaction with the central star. We find that systems with parameters close to […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Press Release, TRAPPIST-1
Planet-Planet Occultations in TRAPPIST-1 and Other Exoplanet Systems
We explore the occurrence and detectability of planet-planet occultations (PPOs) in exoplanet systems. These are events during which a planet occults the disk of another planet in the same system, […]
Posted inPress Release, TRAPPIST-1
The Stellar Activity of TRAPPIST-1 and Consequences for the Planetary Atmospheres
The signatures of planets hosted by M dwarfs are more readily detected with transit photometry and radial velocity methods than those of planets around larger stars. Recently, transit photometry was […]
Posted inPress Release, TRAPPIST-1
Temporal Evolution of the High-energy Irradiation and Water Content of TRAPPIST-1 Exoplanets
The ultracool dwarf star TRAPPIST-1 hosts seven Earth-size transiting planets, some of which could harbour liquid water on their surfaces. UV observations are essential to measure their high-energy irradiation, and […]
Posted inPress Release, TRAPPIST-1
First Hints of Possible Water Content of TRAPPIST-1 Planets
An international team of astronomers used the NASA/ESA Hubble Space Telescope to estimate whether there might be water on the seven earth-sized planets orbiting the nearby dwarf star TRAPPIST-1. The […]
Posted inExoplanets, -moons, -comets, Press Release, TRAPPIST-1
TRAPPIST-1 is Older Than Our Solar System
If we want to know more about whether life could survive on a planet outside our solar system, it’s important to know the age of its star. Young stars have […]
Posted inPress Release, TRAPPIST-1
The Threatening Environment of the TRAPPIST-1 Planets
Recently, four additional Earth-mass planets were discovered orbiting the nearby ultracool M8 dwarf TRAPPIST-1, making a remarkable total of seven planets with equilibrium temperatures compatible with the presence of liquid […]