The nearby super-Earth 55 Cnc e orbits a bright (V = 5.95 mag) star with a period of ~ 18 hours and a mass of ~ 8 Earth masses. Its […]
exoplanet
Posted inExoplanets, -moons, -comets, Press Release
A Systematic Study of CO2 Planetary Atmospheres And Their Link To The Stellar Environment
The Milky Way Galaxy is literally teeming with exoplanets; thousands of planets have been discovered, with thousands more planet candidates identified. Terrestrial-like planets are quite common around other stars, and […]
Posted inEpsilon Eridani, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics
An Application Of A solar-type Dynamo Model For Epsilon Eridani
During the last decade, the relation between activity cycle periods with stellar parameters has received special attention. The construction of reliable registries of activity reveals that solar type stars exhibit […]
Posted inAstronomy & Telescopes, Press Release
The ARCiS framework For Exoplanet Atmospheres: Modelling Philosophy and Retrieval
Aims: ARCiS, a novel code for the analysis of exoplanet transmission and emission spectra is presented. The aim of the modelling framework is to provide a tool able to link […]
Posted inExoplanets, -moons, -comets, Extinction events, Impact events, Press Release, Proxima Centauri
Risks For Life On Proxima b From Sterilizing Asteroid Impacts
We consider the implications that a debris belt located between Proxima b and Proxima c would pose for the rate of large asteroid impacts that could sterilize Proxima b from […]
Posted inExoplanets, -moons, -comets, Press Release
Obliquity Of An Earth-like Planet From Frequency Modulation Of Its Direct Imaged Lightcurve: Mock Analysis From General Circulation Model Simulation
Direct-imaging techniques of exoplanets have made significant progress recently, and will eventually enable to monitor photometric and spectroscopic signals of earth-like habitable planets in the future. The presence of clouds, […]
Posted inExoplanets, -moons, -comets, Press Release
A Mini-Neptune and a Venus-Zone Planet in the Radius Valley Orbiting the Nearby M2-dwarf TOI-1266: Validation with the Habitable-zone Planet Finder
We report on the validation of two planets orbiting the nearby (36pc) M2 dwarf TOI-1266 observed by the TESS mission. The inner planet is sub-Neptune-sized (R=2.46ยฑ0.08Rโ) with an orbital period […]
Posted inExoplanets, -moons, -comets, Press Release
Retrieving Scattering Clouds And Disequilibrium Chemistry In The Atmosphere Of HR 8799e
Clouds are ubiquitous in exoplanet atmospheres and represent a challenge for the model interpretation of their spectra. Complex cloud models are too numerically costly for generating a large number of […]
Posted inExoplanets, -moons, -comets, Press Release
As Many As Six Billion Earth-like Planets In Our Galaxy, According To New Estimates
To be considered Earth-like, a planet must be rocky, roughly Earth-sized and orbiting Sun-like (G-type) stars. It also has to orbit in the habitable zones of its star–the range of […]
Posted inBarnard's Star, Exoplanets, -moons, -comets, Press Release
Directly Imaged Exoplanets In Reflected Starlight. The Importance Of Knowing The Planet Radius
We have investigated the information content in reflected-starlight spectra of exoplanets. We specify our analysis to Barnard’s Star b candidate super-Earth, for which we assume a radius 0.6 times that […]