In Titan’s atmosphere, the chemistry of small hydrocarbons and nitriles represent an important link from molecular species to the ubiquitous organic haze that gives Titan its characteristic yellow color.
Photochemistry
Posted inAI - Data - Apps - Cybernetics, Astrochemistry, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Status Report
SIMBA: A Python-based Single-point Astrochemical Solver And Analysis Tool
Determining molecular abundances in astrophysical environments is crucial for interpreting observational data and constraining physical conditions in these regions. Chemical modelling tools are essential for simulating the complex processes that […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Aerosol Dynamics On Hot Exoplanets: The Role Of Radiation Pressure
Aerosols appear to be ubiquitous in exoplanetary atmospheres. However because our understanding of the physical processes that govern aerosols is incomplete, their presence makes the measurement of atmospheric properties, such […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Interstellar, Press Release
Lyman-Alpha Emission From K And M Dwarfs: Intrinsic Profiles, Variability, And Flux In The Habitable Zone
Lyman-α (Lyα) is the most prominent ultraviolet emission line in low-mass stars, playing a crucial role in exoplanet atmospheric photochemistry, heating, and escape.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
Nitrogen Chemistry Of Hycean Worlds On The Example Of K2-18b
A recent observation of the exoplanet K2-18b sparked interest among scientists – large amounts of carbon dioxide and methane were detected in an H2-rich background atmosphere.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Status Report
Detection Of CO2, CO, and H2O In The Atmosphere Of The Warm Sub-Saturn HAT-P-12b
The chemical composition of warm gas giant exoplanet atmospheres (with Teq < 1000 K) is not well known due to the lack of observational constraints. HAT-P-12 b is a warm, […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Imaging & Spectroscopy, Interstellar, Status Report
Photochemistry Of Interstellar Ice Forming Complex Organic Molecules
Astrochemistry is a well-established multidisciplinary field devoted to the study of atoms and molecules in space.
Posted inAstrochemistry, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Imaging & Spectroscopy, Mars, Status Report
A 3D Model Simulation Of Hydrogen Chloride Photochemistry On Mars: Comparison With Satellite Data
HCl was detected in the Martian atmosphere by the NOMAD and ACS spectrometers aboard the ExoMars TGO. Photochemical models show that using gas-phase chemistry alone is insufficient to reproduce these […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Europa, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report, Stellar Cartography
Life After Death: Europa In The Evolving Habitable Zone Of A Red Sun
Most stars end their main-sequence (MS) lives by evolving through the red-giant and asymptotic-giant branches before ending as a quiescent, stable white dwarf. Therefore, it is imperative to model the […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography, TRAPPIST-1, Water/Hycean Worlds & Oceanography
Effects of Transient Stellar Emissions On Planetary Climates Of Tidally-locked Exo-earths
Space weather events in planetary environments sourced from transient host star emissions, including stellar flares, coronal mass ejections, and stellar proton events, can substantially influence an exoplanet’s climate and atmospheric […]