Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975icar...25..627p&link_type=abstract
Icarus, vol. 25, Aug. 1975, p. 627-634. NASA-supported research.
Astronomy and Astrophysics
Astronomy
8
Astronomical Models, Gravitational Effects, Jupiter (Planet), Pioneer 10 Space Probe, Planetary Mass, Equations Of State, Helium, Hydrogen, Mass Ratios, Mathematical Models
Scientific paper
It is noted that previously calculated models of Jupiter, in which the H/He ratio is assumed to be solar, required the inclusion of considerable additional mass in the form of volatilized condensates in the atmosphere and excess mass in the central core. Several additional models are considered in this paper which take into account the stricter constraints imposed by Pioneer 10 measurements of Jupiter's gravitational moments. These measurements have indicated that the mass of the excess volatilized condensates (assumed to be water) relative to the core mass (assumed to be rock) exceeds the relevant solar ratio. The present models are tested for sensitivity to variations in the H/He ratio, in the softness of the equation of state for water, in the treatment of the internal adiabat, in departures from an internal adiabat, and in temperature at the one-bar level. The preliminary results indicate that the ratio of excess water to rock in Jupiter is considerably in excess of the solar value.
Cameron G. W. A.
Podolak Morris
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