Results 11 to 20 of about 1,575 (209)
The Astronomical JournalThe present-day bulk elemental composition of an exoplanet can provide insight into a planet’s formation and evolutionary history. Such information is now being measured for dozens of planets with state-of-the-art facilities using Bayesian atmosphere ...
Joshua D. Lothringer +2 more
doaj +4 more sources
POSEIDON: A Multidimensional Atmospheric Retrieval Code for Exoplanet Spectra [PDF]
Journal of Open Source Software, 2023 Exoplanet atmospheres are a dynamic and fast-changing field at the frontier of modern astronomy. Telescope observations can reveal the chemical composition, temperature, cloud properties, and (potentially) the habitability of these remote worlds ...
Ryan J Macdonald
exaly +4 more sources
Aura-3D: A Three-dimensional Atmospheric Retrieval Framework for Exoplanet Transmission Spectra
Astrophysical Journal, 2022 Atmospheric retrievals of exoplanet transmission spectra allow constraints on the composition and structure of the day–night terminator region. Such retrievals in the past have typically assumed one-dimensional (1D) temperature structures which were ...
Matthew C Nixon, Nikku Madhusudhan
exaly +3 more sources
Interpreting the atmospheric composition of exoplanets: sensitivity to planet formation assumptions
The Astrophysical Journal, 2022 Constraining planet formation based on the atmospheric composition of exoplanets is a fundamental goal of the exoplanet community. Existing studies commonly try to constrain atmospheric abundances, or to analyze what abundance patterns a given ...
Mollière, Paul +47 more
core +7 more sources
, 2023 The newly selected Venus missions EnVISION and VERITAS (Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy) by ESA and NASA offer new opportunities for studying Venus but will also contribute to furthering our knowledge of Venus as an ...
Rauer, H +7 more
core +2 more sources
Retrieval of atmospheric structure and composition of exoplanets from transit spectroscopy
, 2012 Recent spectroscopic observations of transiting exoplanets have permitted the derivation of the thermal structure and molecular abundances of H2O, CO, CO2, CH4, metallic oxides and alkali metals in these extreme atmospheres.
Lee, Jae Min
core +3 more sources
Atomic iron and titanium in the atmosphere of the exoplanet KELT-9b [PDF]
Nature, 2018 To constrain the formation history of an exoplanet, we need to know its chemical composition. With an equilibrium temperature of about 4,050 kelvin, the exoplanet KELT-9b (also known as HD 195689b) is an archetype of the class of ultrahot Jupiters that ...
D Ehrenreich +2 more
exaly +2 more sources
Astronomical JournalExoplanet transmission spectra provide rich information about the chemical composition, clouds and temperature structure of exoplanet atmospheres. Most exoplanet transmission spectra only span infrared wavelengths ($\gtrsim$ 1 $\rm{\mu m}$), which can ...
Charlotte Fairman +2 more
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The mutual influence of disequilibrium composition and temperature in exoplanet atmospheres
Astronomy & AstrophysicsAstronomical observations have provided an extensive body of evidence for the existence of disequilibrium chemistry in many exoplanet atmospheres, and this departure from a chemical equilibrium composition may have an impact on the temperature of the ...
Agúndez, Marcelino
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A catalogue of exoplanet atmospheric retrieval codes [PDF]
, 2023 Exoplanet atmospheric retrieval is a computational technique widely used to infer properties of planetary atmospheres from remote spectroscopic observations.
MacDonald, Ryan J., Batalha, Natasha E.
core +2 more sources