Results 21 to 30 of about 391,484 (183)

Twelve-Year Cycle in the Cloud Top Winds Derived from VMC/Venus Express and UVI/Akatsuki Imaging

Atmosphere, 2022
We present joint analysis of the UV (365 nm) images captured by the cameras on board ESA’s Venus Express and JAXA’s Akatsuki spacecraft. These observations enabled almost continuous characterization of the cloud top circulation over the longest period of
Igor V. Khatuntsev, Marina V. Patsaeva, Dmitrij V. Titov, Ludmila V. Zasova, Nikolay I. Ignatiev, Dmitry A. Gorinov   +5 more
doaj   +1 more source

Ranges of Atmospheric Mass and Composition of Super Earth Exoplanets [PDF]

, 2008
Terrestrial-like exoplanets may obtain atmospheres from three primary sources: Capture of nebular gases, degassing during accretion, and degassing from subsequent tectonic activity.
Burbine T. H., Elkins-Tanton L. T., Jarosewich E., Linda T. Elkins‐Tanton, Morbidelli A., Sara Seager   +5 more
core   +1 more source

Chemical Composition of a Young Star HD 377

Open Astronomy, 2012
A high resolution spectrum of a pre-main sequence star HD 377 is analyzed. The atmospheric parameters are found to be: Teff =5875 K, log g = 4.25 and the microturbulent velocity ξt = 1.40 kms−1. The metallicity of HD377 is slightly higher than of the Sun,
Kipper Tõnu
doaj   +1 more source

Mid-Infrared Observations of the Giant Planets

Remote Sensing, 2023
The mid-infrared spectral region provides a unique window into the atmospheric temperature, chemistry, and dynamics of the giant planets. From more than a century of mid-infrared remote sensing, progressively clearer pictures of the composition and ...
Michael T. Roman
doaj   +1 more source

Dust cloud evolution in sub-stellar atmospheres via plasma deposition and plasma sputtering [PDF]

, 2017
Context. In contemporary sub-stellar model atmospheres, dust growth occurs through neutral gas-phase surface chemistry. Recently, there has been a growing body of theoretical and observational evidence suggesting that ionisation processes can also occur.
Diver, D. A., Stark, C. R.
core   +4 more sources

On the Stability of Super-Earth Atmospheres

, 2012
We investigate the stability of super Earth atmospheres around M stars using a 7-parameter, analytical framework. We construct stability diagrams in the parameter space of exoplanetary radius versus semi-major axis and elucidate the regions in which the ...
Heng, Kevin, Kopparla, Pushkar
core   +1 more source

A Review of Radio Observations of the Giant Planets: Probing the Composition, Structure, and Dynamics of Their Deep Atmospheres

Remote Sensing, 2023
Radio observations of the atmospheres of the giant planets Jupiter, Saturn, Uranus, and Neptune have provided invaluable constraints on atmospheric dynamics, physics/chemistry, and planet formation theories over the past 70 years.
Imke de Pater, Edward M. Molter, Chris M. Moeckel   +2 more
doaj   +1 more source

Magnetohydrostatic atmospheres

, 2003
We show that the atmospheric and magnetic height variations are coupled in general MHS equilibria with gravity when isolated thin non-force-free flux tubes are present.
Airapetian, Altschuler, Anderson, Arendt, Ayres, Bogdan, Carlsson, Cauzzi, Cheng, Coles, Craig, Davis, Dungey, Fontenla, Giovanelli, Giovanelli, Guhathakurta, Hammer, Hearn, Heyvaerts, Hudson, Jarrett, L. J. November, Lin, Lin, Low, Low, Low, Low, Low, Low, MacQueen, MacQueen, Menzel, Neukirch, Newkirk, November, Parker, Parker, Parker, Petschek, Pneuman, Priest, Rosner, Schatten, Schmieder, Scudder, Syrovatskii, Vaiana, Vaiana, Vainshtein, van Ballegooijen, Vernazza, Wagner, Williams, Withbroe, Woo, Zweibel   +57 more
core   +1 more source

A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b [PDF]

, 2015
We present a multiple scattering vector radiative transfer model which produces disk integrated, full phase polarized light curves for reflected light from an exoplanetary atmosphere.
Kopparla, Pushkar, Natraj, Vijay, Swain, Mark R., Wiktorowicz, Sloane J., Yung, Yuk L., Zhang, Xi   +5 more
core   +2 more sources

Radiation-Hydrodynamics of Hot Jupiter Atmospheres

, 2010
Radiative transfer in planetary atmospheres is usually treated in the static limit, i.e., neglecting atmospheric motions. We argue that hot Jupiter atmospheres, with possibly fast (sonic) wind speeds, may require a more strongly coupled treatment ...
Agol, Barman, Brown, Burkert, Burrows, Castor, Charbonneau, Charbonneau, Charbonneau, Cho, Cho, Cooper, Cooper, Dobbs-Dixon, Emily Rauscher, Fortney, Fortney, Freedman, Goody, Grillmair, Knutson, Knutson, Knutson, Kristen Menou, Langton, Langton, Liou, Menou, Mihalas, Rauscher, Rybicki, Seager, Seager, Seager, Sharp, Showman, Showman, Showman, Showman, Sing, Sudarsky, Swain, Thomas   +42 more
core   +1 more source