A signal originally detected by the Kepler spacecraft has been validated as an exoplanet using the Habitable-zone Planet Finder (HPF), an astronomical spectrograph built by a Penn State team and […]
exoplanet
Posted inExoplanets, -moons, -comets
Stabilization of Dayside Surface Liquid Water Via Tropopause Cold Trapping On Arid Slowly Rotating Tidally Locked Planets
Terrestrial-type exoplanets orbiting nearby red dwarf stars (M-dwarfs) are among the best targets for atmospheric characterization and biosignature searches in the near future. Recent evolutionary studies have suggested that terrestrial […]
Posted inExoplanets, -moons, -comets, Press Release
The Impact of Planetary Rotation Rate on the Reflectance and Thermal Emission Spectrum of Terrestrial Exoplanets Around Sun-like Stars
Robust atmospheric and radiative transfer modeling will be required to properly interpret reflected light and thermal emission spectra of terrestrial exoplanets. This will break degeneracies between the numerous atmospheric, planetary, […]
Posted inExoplanets, -moons, -comets, Press Release
Unveiling Cloudy Exoplanets: The Influence Of Cloud Model Choices On Retrieval Solutions
In recent years, it has become clear that a substantial fraction of transiting exoplanets have some form of aerosol present in their atmospheres. Transit spectroscopy – mostly of hot Jupiters, […]
Posted inExoplanets, -moons, -comets, Press Release
Planet Formation Around M Dwarfs via Disc Instability: Fragmentation Conditions and Protoplanet Properties
Context: Around 30 per cent of the observed exoplanets that orbit M dwarf stars are gas giants that are more massive than Jupiter. These planets are prime candidates for formation […]
Posted inExoplanets, -moons, -comets, Press Release
A Hot Terrestrial Planet Orbiting The Bright M Dwarf L 168-9 Unveiled By TESS
We report the detection of a transiting super-Earth-sized planet (R=1.39+-0.09 Rearth) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V=11, K=7.1) located at 25.15+-0.02 pc. The […]
Posted inExoplanets, -moons, -comets, Press Release
Forming 'Fast And Furious' Planets Around Tiny Stars
New astronomy research from the University of Central Lancashire (UCLan) suggests giant planets could form around small stars much faster than previously thought. As published in today’s Astronomy and Astrophysics […]
Posted inAstronomy & Telescopes, Press Release
The Habitable Exoplanet Observatory (HabEx) Mission Concept Study Final Report
The Habitable Exoplanet Observatory, or HabEx, has been designed to be the Great Observatory of the 2030s. For the first time in human history, technologies have matured sufficiently to enable […]
Posted inExoplanets, -moons, -comets, Press Release
The Paradox Of Youth For ALMA Planet Candidates
Recent ALMA observations indicate that the majority of bright protoplanetary discs show signatures of young moderately massive planets. I show that this result is paradoxical. The planets should evolve away […]
Posted inExoplanets, -moons, -comets, Press Release
Detection of Dive New Planets, Eight Planet Candidates, and Confirmation of Three Planets Around Nine Nearby M Dwarfs
Zechmeister et al. (2009) surveyed 38 nearby M dwarfs from March 2000 to March 2007 with VLT2 and the UVES spectrometer. This data has recently been reanalyzed (Butler et al. […]