Correction to: 3D modelling of the impact of stellar activity on tidally locked terrestrial exoplanets: atmospheric composition and habitability [PDF]
, 2023 openalex +1 more source
Assessing the C/O Ratio Formation Diagnostic: A Potential Trend with Companion Mass
The Astronomical Journal, 2023 The carbon-to-oxygen (C/O) ratio in an exoplanet atmosphere has been suggested as a potential diagnostic of planet formation. Now that a number of exoplanets have measured C/O ratios, it is possible to examine this diagnostic at a population level. Here,
Kielan K. W. Hoch +8 more
doaj +1 more source
Global Chemical Transport on Hot Jupiters: Insights from the 2D VULCAN Photochemical Model
The Astrophysical JournalThe atmospheric dynamics of tidally locked hot Jupiters is characterized by strong equatorial winds. Understanding the interaction between global circulation and chemistry is crucial in atmospheric studies and interpreting observations.
Shang-Min Tsai +9 more
doaj +1 more source
The Astrophysical Journal Letters, 2022 Terrestrial exoplanets such as TRAPPIST-1e will be observed in a new capacity with the JWST/Near Infrared Spectrograph (NIRSpec), which is expected to be able to detect CO _2 , CH _4 , and O _2 signals, if present, with multiple coadded transit ...
Yoav Rotman +4 more
doaj +1 more source
Photochemistry in Terrestrial Exoplanet Atmospheres I: Photochemistry Model and Benchmark Cases [PDF]
, 2012 We present a comprehensive photochemistry model for exploration of the chemical composition of terrestrial exoplanet atmospheres. The photochemistry model is designed from the ground up to have the capacity to treat all types of terrestrial planet atmospheres, ranging from oxidizing through reducing, which makes the code suitable for applications for ...
arxiv +1 more source
Sulfur Dioxide and Other Molecular Species in the Atmosphere of the Sub-Neptune GJ 3470 b
The Astrophysical Journal LettersWe report observations of the atmospheric transmission spectrum of the sub-Neptune exoplanet GJ 3470 b taken using the Near-Infrared Camera on JWST.
Thomas G. Beatty +15 more
doaj +1 more source
Laboratory Simulations of Haze Formation in the Atmospheres of super-Earths and mini-Neptunes: Particle Color and Size Distribution [PDF]
, 2018 Super-Earths and mini-Neptunes are the most abundant types of planets among the ~3500 confirmed exoplanets, and are expected to exhibit a wide variety of atmospheric compositions. Recent transmission spectra of super-Earths and mini-Neptunes have demonstrated the possibility that exoplanets have haze/cloud layers at high altitudes in their atmospheres.
arxiv +1 more source
A simple analysis of earthlike exoplanets [PDF]
arXiv, 2021 The astrobiology is an interdisciplinary science, combining the methods and the means of physics, biology, chemistry and astronomy. Its main purpose is to find out if the exoplanets are habitable and if so, to confirm life on them. The basic conditions for habitability are the essential ones, like these on the Earth.
arxiv
Strong Fractionation of Deuterium and Helium in Sub-Neptune Atmospheres along the Radius Valley
The Astrophysical JournalWe simulate atmospheric fractionation in escaping planetary atmospheres using IsoFATE , a new open-source numerical model. We expand the parameter space studied previously to planets with tenuous atmospheres that exhibit the greatest helium and deuterium
Collin Cherubim +3 more
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Influence of Stellar Flares on the Chemical Composition of Exoplanets and Spectra [PDF]
, 2016 More than 3000 exoplanets have been detected so far, and more and more spectroscopic observations of exoplanets are performed. Future instruments are eagerly awaited as they will be able to provide spectroscopic data with a greater accuracy and sensitivity than what is currently available. An important aspect to consider is temporal stellar atmospheric
arxiv +1 more source