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Understanding Exoplanet Atmospheres [PDF]

open access: yes, 2022
The study of exoplanet atmospheres is a blossoming field. Over the past two decades, dozens of hot gas giant atmospheres have been observed using a variety of techniques with both space and ground telescopes, revealing the presence of water, the ubiquity of clouds, the presence of equatorial jets, the existence of photoevaporation, and much more. For
Zhang, Zhaoxi Michael
openaire   +3 more sources

Ground-based Reconnaissance Observations of 21 Exoplanet Atmospheres with the Exoplanet Transmission Spectroscopy Imager [PDF]

open access: yesThe Astronomical Journal
One of the most prolific methods of studying exoplanet atmospheres is transmission spectroscopy, which measures the difference between the depth of an exoplanet's transit signal at various wavelengths and attempts to correlate the depth changes to ...
Ryan J. Oelkers   +26 more
doaj   +3 more sources

Modeling of Exoplanet Atmospheres [PDF]

open access: yes, 2017
Spectrally characterizing exoplanet atmospheres will be one of the fastest moving astronomical disciplines in the years to come. Especially the upcoming James Webb Space Telescope (JWST) will provide spectral measurements from the near- to mid-infrared of unprecedented precision.
Mollière, Paul Maurice
openaire   +3 more sources

Spectra as windows into exoplanet atmospheres. [PDF]

open access: yesProc Natl Acad Sci U S A, 2014
Understanding a planet’s atmosphere is a necessary condition for understanding not only the planet itself, but also its formation, structure, evolution, and habitability. This requirement puts a premium on obtaining spectra and developing credible interpretative tools with which to retrieve vital planetary information.
Burrows AS.
europepmc   +5 more sources

Exoplanet Atmospheres at High Spectral Resolution [PDF]

open access: yesAnnual Review of Astronomy and Astrophysics
High-resolution spectroscopy (HRS) has grown into one of the main techniques for characterizing the atmospheres of extrasolar planets. High spectral resolving power allows for the efficient removal of telluric and host-star contamination.
Birkby, Jayne
openaire   +4 more sources

A Catalog of Exoplanet Atmospheric Retrieval Codes

open access: yesResearch Notes of the AAS, 2023
Abstract Exoplanet atmospheric retrieval is a computational technique widely used to infer properties of planetary atmospheres from remote spectroscopic observations. Retrieval codes typically employ Bayesian sampling algorithms or machine learning approaches to explore the range of atmospheric properties (e.g., chemical composition ...
MacDonald, Ryan, Batalha, Natasha
openaire   +3 more sources

A JWST NIRSpec Phase Curve for WASP-121b: Dayside Emission Strongest Eastward of the Substellar Point and Nightside Conditions Conducive to Cloud Formation

open access: yesThe Astrophysical Journal Letters, 2023
We present the first exoplanet phase-curve measurement made with the JWST NIRSpec instrument, highlighting the exceptional stability of this newly commissioned observatory for exoplanet climate studies.
Thomas Mikal-Evans   +12 more
doaj   +1 more source

Helium in the eroding atmosphere of an exoplanet [PDF]

open access: yesNature, 2018
Helium is the second-most abundant element in the Universe after hydrogen and is one of the main constituents of gas-giant planets in our Solar System. Early theoretical models predicted helium to be among the most readily detectable species in the atmospheres of exoplanets, especially in extended and escaping atmospheres 1 .
Spake, JJ   +22 more
openaire   +6 more sources

Atmospheres of Rocky Exoplanets

open access: yesAnnual Review of Astronomy and Astrophysics, 2022
Rocky planets are common around other stars, but their atmospheric properties remain largely unconstrained. Thanks to a wealth of recent planet discoveries and upcoming advances in observing capability, we are poised to characterize the atmospheres of dozens of rocky exoplanets in this decade.
Wordsworth, R., Kreidberg, L.
openaire   +5 more sources

ExTrA: Exoplanets in transit and their atmospheres [PDF]

open access: yesSPIE Proceedings, 2015
15 pages, 11 figures, SPIE ...
X. Bonfils   +18 more
openaire   +2 more sources

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