Commission 16: Physical Studies of Planets and Satellites (Etude Physique Des Planets & Satellites)

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Atmospheric Evolution of Terrestrial Planets and Satellites

The evolution of planetary atmospheres and their water inventories are strongly related to the evolution of the solar radiation and plasma environment, which was much more active when the young Sun arrived at the Zero-Age-Main-Sequence. After formation of the terrestrial planets and their early atmospheres, due to the active young Sun and large impacts, heavy species and their isotopes were mos...

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Irregular Satellites of the Giant Planets

The irregular satellites of the outer planets, whose population now numbers over 100, are likely to have been captured from heliocentric orbit during the early period of solar system history. They may thus constitute an intact sample of the planetesimals that accreted to form the cores of the jovian planets. Ranging in diameter from ~2 km to over 300 km, these bodies overlap the lower end of th...

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Atmospheric Escape and Evolution of Terrestrial Planets and Satellites

The origin and evolution of Venus’, Earth’s, Mars’ and Titan’s atmospheres are discussed from the time when the active young Sun arrived at the Zero-Age-Main-Sequence. We show that the high EUV flux of the young Sun, depending on the thermospheric composition, the amount of IR-coolers and the mass and size of the planet, could have been responsible that hydrostatic equilibrium was not always ma...

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Stability of Satellites Around Close-in Extrasolar Giant Planets

We investigate the long-term dynamical stability of hypothetical moons orbiting extrasolar giant planets. Stellar tides brake a planet’s rotation and, together with tidal migration, act to remove satellites; this process limits the lifetimes of larger moons in extrasolar planetary systems. Because more massive satellites are removed more quickly than less massive ones, we are able to derive an ...

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Surfaces, atmospheres and magnetospheres of the outer planets and their satellites and ring systems Part VII

The sessions organized this past year in several international meetings and congresses (like those of the European Geosciences Union (EGU), the Asia Oceania Geosciences Society (AOGS), the European Planetary Science Congress (EPSC) and others) focused on recent observations and models of the atmospheres, magnetospheres and surfaces of the giant planets and their satellites, as well as on their ...

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ژورنال

عنوان ژورنال: Transactions of the International Astronomical Union

سال: 2007

ISSN: 0251-107X

DOI: 10.1017/s0251107x00026584