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Characterizing Exoplanetary Atmospheres: New Views on Exoplanet Composition and Chemistry
To appear in the proceedings of the Pontifical Academy of Science workshop on The James Webb Space Telescope: from first light to new worldviews, Vatican City, 27-29 February ...
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Experimental and Numerical Constraints on the Masses and Compositions of Rocky Exoplanet Atmospheres
ISSN:0002 ...
Thompson, Margaret April; id_orcid0000-0002-6178-9055 +5 more
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Transmission spectra have suggested that condensate clouds and/ or photochemical haze are present in the atmospheres of many temperate to warm exoplanets [1]. Aerosols can affect atmospheric composition directly through condensation and heterogeneous reactions, and indirectly by impacting the depth of penetration of photolyzing radiation, as well as ...
Vuitton, Véronique +9 more
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Distinguishing Oceans of Water from Magma on Mini-Neptune K2-18b
The Astrophysical Journal LettersMildly irradiated mini-Neptunes have densities potentially consistent with them hosting substantial liquid-water oceans (“Hycean” planets). The presence of CO _2 and simultaneous absence of ammonia (NH _3 ) in their atmospheres has been proposed as a ...
Oliver Shorttle +4 more
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The composition and dynamics of exoplanet atmospheres. [PDF]
The study of exoplanets has rapidly developed in the last twenty years, and the detailed characterization of planetary atmospheres has become a key area of research.\ud \ud For transiting planets around bright stars, atmospheric features can be detected with transmission spectroscopy.
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The atmospheres of hot rocky exoplanets (HREs), should they persist, are products of interactions with underlying magma oceans. Spectra collected by the James Webb Space Telescope (JWST) hint at a CO/CO$_2$-rich atmosphere on the HRE 55 Cancri e, indicative of such a process.
Seidler, Fabian L. +3 more
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, 2017 For an assessment of the detectability of molecular concentrations from transit spectra of Earth-like exoplanets, occultation spectra observed by an operational Earth observation satellite mission have been modeled with a line-by-line infrared radiative transfer code.
Städt, Steffen +3 more
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Confirmation of Fe i on MASCARA-5 b’s Dayside Observed With EXPRES
The Astronomical JournalMASCARA-5 b/TOI-1431 b is an ultra-hot Jupiter ( P _orb = 2.650237 ± 0.000003 dayd, T _eq = 2370 ± 70 K, M _p = 3.12 ± 0.18 M _Jup , R _p = 1.49 ± 0.05 R _Jup ) orbiting a bright Am star ( V = 8.0 mag).
James T. Sikora +7 more
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The Metallicity and Carbon-to-oxygen Ratio of the Ultrahot Jupiter WASP-76b from Gemini-S/IGRINS
The Astronomical JournalMeasurements of the carbon-to-oxygen (C/O) ratios of exoplanet atmospheres can reveal details about their formation and evolution. Recently, high-resolution cross-correlation analysis has emerged as a method of precisely constraining the C/O ratios of ...
Megan Weiner Mansfield +13 more
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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
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