Earth-mass exoplanets on year-long orbits and cool gas giants (CGG) on decade-long orbits lie at the edge of current detection limits.
astro-ph.EP
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
The Occurrence Rate of Terrestrial Planets Orbiting Nearby Mid-to-late M Dwarfs from TESS Sectors 1-42
We present an analysis of a volume-complete sample of 363 mid-to-late M dwarfs within 15 pc of the Sun with masses between 0.1 and 0.3 M⊙ observed by TESS within […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Mars, Status Report
Constraints On The Size and Composition Of The Ancient Martian Atmosphere From Coupled CO2-N2-Ar Isotopic Evolution Models
Present-day Mars is cold and dry, but mineralogical and morphological evidence shows that liquid-water existed on the surface of ancient Mars.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, TRAPPIST-1
EDEN Survey: Small Transiting Planet Detection Limits and Constraints on the Occurrence Rates for Late M Dwarfs within 15 pc
Earth-sized exoplanets that transit nearby, late spectral type red dwarfs will be prime targets for atmospheric characterization in the coming decade.
Posted inAtmospheres, Climate, Weather, Mars, Press Release
A Modern-day Mars Climate In The Met Office Unified Model: Dry Simulations
We present results from the Met Office Unified Model (UM), a world-leading climate and weather model, adapted to simulate a dry Martian climate.
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Venus
The Demographics Of Terrestrial Planets In The Venus Zone
Understanding the physical characteristics of Venus, including its atmosphere, interior, and its evolutionary pathway with respect to Earth, remains a vital component for terrestrial planet evolution models and the emergence […]
Posted inExoplanets, -moons, -comets, Status Report
A Framework For The Architecture Of Exoplanetary Systems. II. Nature Versus Nurture: Emergent Formation Pathways Of Architecture Classes
In the first paper of this series, we proposed a model-independent framework for characterising the architecture of planetary systems at the system level.
Posted inAstrochemistry, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Meteorites & Asteroids, Status Report, Water/Hycean Worlds & Oceanography
Origin Of Water In The Terrestrial Planets: Insights From Meteorite Data And Planet Formation Models
Water condensed as ice beyond the water snowline, the location in the Sun’s natal gaseous disk where temperatures were below 170 K. As the disk evolved and cooled, the snowline […]
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Imaging & Spectroscopy, Io, Mapping, Geodesy, Cartography, Bathymetry, Press Release
Spectroscopic Mapping Of Io’s Surface With HST/STIS: SO2 Frost, Sulfur allotropes, And Large-scale Compositional Patterns
Io’s intense volcanic activity results in one of the most colorful surfaces in the solar system. Ultraviolet and visible-wavelength observations of Io are critical to uncovering the chemistry behind its […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Venus
From Exo-Earths To Exo-Venuses – Flux And Polarization Signatures Of Reflected Light
Terrestrial exoplanets in habitable zones are ubiquitous. It is, however, unknown which have Earth-like or Venus-like climates.