Implementation of polytropic method to study initial structures of gas giant protoplanets | ||
NRIAG Journal of Astronomy and Geophysics | ||
Volume 3, Issue 2, December 2014, Pages 163-169 PDF (1.28 M) | ||
DOI: 10.1016/j.nrjag.2014.10.003 | ||
Authors | ||
Gour Chandra Paul; Mrinal Chandra Barman; Abdul Al Mohit | ||
Abstract | ||
In this paper we have determined the initial structures of gas giant protoplanets, formed via disk instability, having a mass range of 0.3–10 Jupiter masses by the simple polytropic method. The polytropic protoplanets or polytropes have been assumed to be spheres of solar composition, each of which is in a steady state of quasi-static equilibrium, where the only source of energy is the gravitational contraction of the gas. The results of our calculations for the polytropes with polytropic indices n = 1 and n = 1.5 are found to be closer to reality and are in good agreement with the findings obtained by other investigations with more rigorous treatment of the problem. | ||
Keywords | ||
Extrasolar planets; polytrope; Initial structure; Jupiter | ||
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