Results 41 to 50 of about 3,834 (215)

Cloud formation in exoplanet atmospheres : nucleation of small molecular clusters [PDF]

It has been inferred that many exoplanets host clouds in their atmospheres. Understanding the processes through which these clouds form, and being able to model them is essential for our understanding of their climate and to explain our observations. The
Sindel, Jan Philip
core   +1 more source

Sulfur-driven haze formation in warm CO2-rich exoplanet atmospheres

, 2020
International audienceSulfur gases substantially affect the photochemistry of planetary atmospheres in our Solar System, and are expected to be important components in exoplanet atmospheres.
Mcguiggan, Patricia, Lewis, Nikole,, He, Chao, Moses, Julianne, I, Moran, Sarah, E, Moses, Julianne,, Morley, Caroline,, Yu, Xinting, Hörst, Sarah,, Morley, Caroline, V, Hörst, Sarah, M, Marley, Mark, S, Lewis, Nikole, K, Kempton, Eliza M.-R., Marley, Mark,, Vuitton, Véronique, Moran, Sarah,   +16 more
core   +1 more source

Exoplanet atmospheres: A theoretical outlook

, 2010
With over two dozen exoplanet atmospheres observed today, the field of exoplanet atmospheres is solidly established. The highlights of exoplanet atmosphere studies include: detection of molecular spectral features; constraints on atmospheric vertical ...
Sara Seager
core   +1 more source

Hα Absorption in Transiting Exoplanet Atmospheres [PDF]

Proceedings of the International Astronomical Union, 2013
AbstractRecent observations by Jensen et al. of Hα absorption by the upper atmosphere of HD189733b have motivated the need for a theoretical understanding of the distribution of n=2 hydrogen within hot Jupiter atmospheres. With this in mind, we model the n=2 state of atomic hydrogen in a hydrostatic atmosphere in thermal and photoionization equilibrium.
Christie, Duncan, Arras, Phil, Li, Zhi-Yun   +2 more
openaire   +3 more sources

Exoplanet secondary atmosphere loss and revival [PDF]

Proceedings of the National Academy of Sciences, 2020
SignificanceEarth and Venus have significant atmospheres, but Mercury does not. Thousands of exoplanets are known, but we know almost nothing about rocky exoplanet atmospheres. Many rocky exoplanets were formed by a sub-Neptune-to-super-Earth conversion process during which planets lose most of their H2-rich (primary) atmospheres and are reduced in ...
Edwin S. Kite, Megan N. Barnett
openaire   +3 more sources

Predicting Nitrogen Isotope Fractionation in Nitrate Deposition on Early Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Noachian and early Hesperian Mars were likely warm and wet, with an atmosphere abundant in molecular nitrogen. The recent discovery of nitrate deposits in the Yellowknife Bay mudstones at Gale Crater confirm the existence of nitrogen oxides (NOX) on Noachian Mars. The processes responsible for the production of these nitrates would fractionate
J. Shawcross, D. J. Adams, M. L. Wong, K. J. Smith, Y. L. Yung   +4 more
wiley   +1 more source

On the Detection of Low‐Frequency Planetary Radio Emission With an Orbiting Interferometer

Radio Science, Volume 61, Issue 6, June 2026.
Abstract The magnetized planets of the outer Solar System produce kilometric radio emissions at very low frequencies (<1 ${< } 1\,$MHz). They reveal the planetary magnetic dynamics and their interaction with the solar wind. Those radio emissions can also serve as a proxy for interplanetary space weather monitoring.
E. Rouillé, B. Cecconi, B. Segret, J. N. Girard, A. Loh   +4 more
wiley   +1 more source

Observations of Exoplanet Atmospheres [PDF]

Publications of the Astronomical Society of the Pacific, 2015
Detailed characterization of an extrasolar planet's atmosphere provides the best hope for distinguishing the makeup of its outer layers, and the only hope for understanding the interplay between initial composition, chemistry, dynamics & circulation, and disequilibrium processes.
openaire   +3 more sources

The Importance of Optical Wavelength Data on Atmospheric Retrievals of Exoplanet Transmission Spectra

The Astronomical Journal
Exoplanet transmission spectra provide rich information about the chemical composition, clouds, and temperature structure of exoplanet atmospheres. Most exoplanet transmission spectra only span infrared wavelengths (≳1 μ m), which can preclude crucial ...
Charlotte Fairman, Hannah R. Wakeford, Ryan J. MacDonald   +2 more
doaj   +1 more source

The Role of Planetary Rotation in Polar Cusp Localization

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Juno observations have revealed that Jupiter's polar cusps are displaced toward dusk and even the nightside, contradicting the Earth‐derived paradigm that is confined to narrower ranges near noon. These findings underscore the overlooked influence of planetary rotation on magnetospheric dynamics, exposing a critical gap in current theoretical ...
Junjie Chen, Peter A. Delamere, William Lotko, Yan Xu, Zhonghua Yao, Oliver Brambles, Enhao Feng, Ziyi Yang, Kevin H. Pham, Binzheng Zhang   +9 more
wiley   +1 more source