Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pazh...16..925g&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 16, Oct. 1990, p. 925-939. In Russian. In Russian.
Astronomy and Astrophysics
Astronomy
Astronomical Models, Gas Giant Planets, Gravitational Fields, Planetary Atmospheres, Protoplanets, Helium, Planetary Cores, Planetary Mass, Planetary Structure
Scientific paper
New models of the internal structure of Jupiter, Saturn, Uranus and Neptune are constructed by numerical modeling. The notable increase in helium abundance in planetary atmospheres obtained from recent observations throws a new light on the structure of Jupiter and Saturn and their cores. Jupiter's core is confirmed to be several times smaller in mass than Saturn's. Jupiter-like models, with a two-layer molecular envelope, are constructed for Uranus and Neptune. Models of giant planets do not support Mizuno's (1980) hypothesis of approximately equal masses for planet embryos on which gas accretion occurred. The hypothesis of a massive carbon depletion in Jupiter is discussed.
Gudkova T. B.
Zharkov Vladimir Naumovich
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