Results 21 to 30 of about 15,700 (208)

Exploring and Validating Exoplanet Atmospheric Retrievals with Solar System Analog Observations

open access: yesThe Planetary Science Journal, 2023
Solar system observations that serve as analogs for exoplanet remote sensing data can provide important opportunities to validate ideas and models related to exoplanet environments.
Tyler D. Robinson, Arnaud Salvador
doaj   +1 more source

Water in exoplanets [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012
Exoplanets—planets orbiting around stars other than our own Sun—appear to be common. Significant research effort is now focused on the observation and characterization of exoplanet atmospheres. Species such as water vapour, methane, carbon monoxide and carbon dioxide have been observed in a handful of hot, giant, gaseous planets, but ...
Giovanna, Tinetti   +3 more
openaire   +2 more sources

HD 199719’un Çizgi Ortay Analizi

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2020
Bu çalışmada, TÜBİTAK Ulusal Gözlemevinde (TUG) devam etmekte olan ötegezegen araştırmasının bir parçası olarak HD 199719’un tayfsal çizgi ortaylarının (bisektör) değişimleri incelendi.
Didem Dilan İZCİ, Mesut YILMAZ
doaj   +1 more source

Exoplanet science 2.0 [PDF]

open access: yesNature, 2018
The study of life on and off Earth needs unified funding and a coherent plan, say Caleb Scharf, Debra Fischer and Victoria Meadows. The study of life on and off Earth needs unified funding and a coherent plan, say Caleb Scharf, Debra Fischer and Victoria Meadows.
Caleb, Scharf   +2 more
openaire   +2 more sources

Simultaneous characterization of the atmospheres, surfaces, and exomoons of nearby rocky exoplanets

open access: yesEarth and Planetary Physics, 2018
Atmospheric composition is an important indicator of habitability and life. The presence or absence of a large exomoon around an Earth-size exoplanet could have important consequences for planet climate stability.
WenLiang Cui   +6 more
doaj   +1 more source

Exoplanet Biosignatures: Future Directions [PDF]

open access: yesAstrobiology, 2018
125 pages (double spaced), 12 figures; The paper is the fourth in a series of 5 review manuscripts of the NExSS Exoplanet Biosignatures Workshop.
Walker, Sara I.   +13 more
openaire   +8 more sources

ExoGemS Detection of a Metal Hydride in an Exoplanet Atmosphere at High Spectral Resolution

open access: yesThe Astrophysical Journal Letters, 2023
Exoplanet atmosphere studies are often enriched by synergies with brown dwarf analogs. However, many key molecules commonly seen in brown dwarfs have yet to be confirmed in exoplanet atmospheres.
Laura Flagg   +9 more
doaj   +1 more source

EChO [PDF]

open access: yesExperimental Astronomy, 2012
A dedicated mission to investigate exoplanetary atmospheres represents a major milestone in our quest to understand our place in the universe by placing our Solar System in context and by addressing the suitability of planets for the presence of life.
G. Tinetti   +134 more
openaire   +11 more sources

From Methane to Nanodiamond Precursors in Water: Superacid‐like Condensation Pathways Under Extreme Conditions

open access: yesAngewandte Chemie, Volume 138, Issue 3, 16 January 2026.
Under extreme pressure and temperature, superionic water acts as a strong superacid, catalyzing methane polycondensation through pentacoordinated carbonium ions (CH5+). This discovery reveals the non‐classical carbocation chemistry underlying the early stages of diamond formation in water under extreme conditions.
Thomas Thévenet   +6 more
wiley   +2 more sources

Atmospheric circulation of exoplanets

open access: yes地球与行星物理论评, 2023
To date, more than 5000 exoplanets and more than 2000 brown dwarfs have been confirmed, which shows rich diversities in many aspects. With the rapid growth of the planet family, both observational and theoretical research on exoplanet atmosphere is ...
Yuchen Lian, Yongyun Hu
doaj   +1 more source

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