Results 11 to 20 of about 59,466 (297)

Strong Depletion of 13C in CO Induced by Photolysis of CO2 in the Martian Atmosphere, Calculated by a Photochemical Model

open access: yesThe Planetary Science Journal, 2023
The isotopic signature of atmospheric carbon offers a unique tracer for the history of the Martian atmosphere and the origin of organic matter on Mars. The photolysis of CO _2 is known to induce strong isotopic fractionation of the carbon between CO _2 ...
Tatsuya Yoshida   +9 more
doaj   +1 more source

Planetary atmospheres [PDF]

open access: yesAstronomical School’s Report, 2009
The theoretical and observational aspects of research ofplanetary atmospheres and their main satellites are presented. Physics of atmosphere, its structure, making climatefactors, stability of atmospheres to dissipation of basic gases, applicability of theory of similarity to the study ofatmosphere and its general circulation are considered.
openaire   +4 more sources

Depletion of 13C in CO in the Atmosphere of Mars Suggested by ExoMars-TGO/NOMAD Observations

open access: yesThe Planetary Science Journal, 2023
The atmosphere of Mars is mainly composed by carbon dioxide (CO _2 ). It has been predicted that photodissociation of CO _2 depletes ^13 C in carbon monoxide (CO).
S. Aoki   +21 more
doaj   +1 more source

Soft X-Ray-induced Dimerization of Methane

open access: yesThe Astrophysical Journal, 2023
Carbon 1s excitation of methane, CH _4 , has been studied in the gas phase using the ion trap integrated with the photon–ion instrument at PETRA III/DESY and soft X-rays from the beamline P04.
S. Reinwardt   +10 more
doaj   +1 more source

A population study of gaseous exoplanets [PDF]

open access: yes, 2018
We present here the analysis of 30 gaseous extrasolar planets, with temperatures between 600 and 2400 K and radii between 0.35 and 1.9 $R_\mathrm{Jup}$. The quality of the HST/WFC3 spatially scanned data combined with our specialized analysis tools allow
Damiano, M.   +10 more
core   +2 more sources

Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget

open access: yesAtmosphere, 2015
Most previous top-down global carbon monoxide (CO) budget estimates have used only concentration information and shown large differences in individual source estimates.
Keyhong Park   +3 more
doaj   +1 more source

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

How does the shape of the stellar spectrum affect the Raman scattering features in the albedo of exoplanets? [PDF]

open access: yes, 2017
Diagnostic potential of the spectral signatures of Raman scattering imprinted in planetary albedo spectra at short optical wavelengths has been demonstrated in research on Solar System planets and has recently been proposed as a probe of exoplanet ...
Heng, Kevin   +2 more
core   +2 more sources

Spectroscopic detection and characterisation of planetary atmospheres

open access: yesEPJ Web of Conferences, 2011
Space based broadband infrared observations of close orbiting extrasolar giant planets at transit and secondary eclipse have proved a successful means of determining atmospheric spectral energy distributions and molecular composition.
Collier Cameron A.   +12 more
doaj   +1 more source

Nightside Ionospheric Structure and Composition on Mars Driven by Energetic Electron Precipitation

open access: yesThe Astrophysical Journal, 2023
Ionospheric chemistry plays an unexpectedly important role in the evolution of planetary habitability. This study is dedicated to a detailed modeling of the nightside Martian ionospheric structure and composition, a topic that has been poorly explored ...
Shiqi Wu   +6 more
doaj   +1 more source

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