Results 81 to 90 of about 646 (121)

Thermal structure, composition, atmospheric dynamics and long-terme evolution of irradiated exoplanets

Structure thermique, composition, dynamique de l’atmosphère et évolution à long-terme des exoplanètes irradiées Plus d’un millier d’exoplanètes ont été découvertes depuis une dizaine d’années. Plus incroyable encore, nous pouvons maintenant caractériser les atmosphères de ces mondes lointains.
openaire   +2 more sources

Exoplanet atmospheric characterization using amortized simulation based inference [PDF]

Around 30 years after the first exoplanet detection and over 5000 detections later, we have come a long way in characterizing a huge diversity of exoplanets to understand their formation, evolution and habitability.
Vasist, Malavika Vijayendra
core  

Detection of carbon monoxide and water absorption lines in an exoplanet atmosphere

, 2013
Determining the atmospheric structure and chemical composition of an exoplanet remains a formidable goal. Fortunately, advancements in the study of exoplanets and their atmospheres have come in the form of direct imaging - spatially resolving the planet ...
Konopacky, Q.M., Barman, T.S., Macintosh, B.A., Marois, C.   +3 more
core   +1 more source

Oxygen Left Behind: Atmospheric Enrichment Due to Fractionation in Sub-Neptunes Using BOREAS

The Astrophysical Journal
The evolution of exoplanetary atmospheres is strongly influenced by atmospheric escape, particularly for close-in planets. Fractionation during atmospheric loss can preferentially remove lighter elements such as hydrogen, while retaining heavier species ...
Marilina Valatsou, Caroline Dorn, Pierlou Marty, James E. Owen   +3 more
doaj   +1 more source

Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy

, 2017
Exoplanets that orbit close to their host stars are much more highly irradiated than their solar system counterparts. Understanding the thermal structures and appearances of these planets requires investigating how their atmospheres respond to such ...
Showman, A. P., Kreidberg, L., Seager, S., Burrows, A., Williamson, M. H., Charbonneau, David, Bean, J. L., Desert, J.-M., Line, M. R., McCullough, P. R., Kataria, T., Homeier, D., Fortney, J. J., Henry, G. W., Madhusudhan, N., Stevenson, K. B.   +15 more
core   +1 more source

A Next-generation Exoplanet Atmospheric Retrieval Framework for Transmission Spectroscopy (NEXOTRANS): Comparative Characterization for WASP-39 b Using JWST NIRISS, NIRSpec PRISM, and MIRI Observations

The Astrophysical Journal
The advent of JWST has marked a new era in exoplanetary atmospheric studies, offering higher-resolution data and greater precision across a broader spectral range than previous space-based telescopes.
Tonmoy Deka, Tasneem Basra Khan, Swastik Dewan, Priyankush Ghosh, Debayan Das, Liton Majumdar   +5 more
doaj   +1 more source

Characterisation of exoplanet atmospheres using high-resolution spectroscopy

The characterisation of exoplanet atmospheres is crucial to understanding planet formation, the exploration of extreme atmospheric physics, finding habitable worlds, and searching for extraterrestrial life, but challenged by the overwhelming star-to ...
van Sluijs, Lennart
core   +1 more source

A Comprehensive Sulfur Chemistry Network Including Excited S(1D) and SO(1Δ) for the XODIAC Photochemical Model: Accounting for Missing Sulfur Processes in Venus and Exo-Venus Analogs

The Astrophysical Journal
Sulfur chemistry plays a central role in controlling the atmospheric structure, cloud formation, and composition of Venus and Venus-like exoplanets. However, key reactions involving ground- and excited-state sulfur species remain poorly constrained, and ...
Priyankush Ghosh, Namrata Rani, Jeehyun Yang, Karen Willacy, P. B. Rimmer, Liton Majumdar   +5 more
doaj   +1 more source

Exoplanet atmospheres: physical processes

, 2010
Over the past twenty years, astronomers have identified hundreds of extrasolar planets--planets orbiting stars other than the sun. Recent research in this burgeoning field has made it possible to observe and measure the atmospheres of these exoplanets ...
Seager, Sara
core  

First Results from WINERED: Detection of Emission Lines from Neutral Iron and a Combined Set of Trace Species on the Dayside of WASP-189 b

The Astronomical Journal
Ground- and space-based observations have revealed that ultrahot Jupiters (UHJs, T _eq  > 2200 K) typically have inverted thermal profiles, while cooler hot Jupiters have noninverted ones.
Lennart van Sluijs, Emily Rauscher, Eliza M.-R. Kempton, Thomas Kennedy, Isaac Malsky, Noriyuki Matsunaga, Michael Meyer, Andrew McWilliam, John D. Monnier, Shogo Otsubo, Yuki Sarugaku, Tomomi Takeuchi   +11 more
doaj   +1 more source