Header

UZH-Logo

Maintenance Infos

The primordial entropy of Jupiter


Cumming, Andrew; Helled, Ravit; Venturini, Julia (2018). The primordial entropy of Jupiter. Monthly Notices of the Royal Astronomical Society, 477(4):4817-4823.

Abstract

The formation history of giant planets determines their primordial structure and consequent evolution. We simulate various formation paths of Jupiter to determine its primordial entropy, and find that a common outcome is for proto-Jupiter to have non-convective regions in its interior. We use planet formation models to calculate how the entropy and post-formation luminosity depend on model properties such as the solid accretion rate and opacity, and show that the gas accretion rate and its time evolution play a key role in determining the entropy profile. The predicted luminosity of Jupiter shortly after formation varies by a factor of 2–3 for different choices of model parameters. We find that entropy gradients inside Jupiter persist for ∼10 Myr after formation. We suggest that these gradients should be considered together with heavy-element composition gradients when modelling Jupiter’s evolution and internal structure.

Abstract

The formation history of giant planets determines their primordial structure and consequent evolution. We simulate various formation paths of Jupiter to determine its primordial entropy, and find that a common outcome is for proto-Jupiter to have non-convective regions in its interior. We use planet formation models to calculate how the entropy and post-formation luminosity depend on model properties such as the solid accretion rate and opacity, and show that the gas accretion rate and its time evolution play a key role in determining the entropy profile. The predicted luminosity of Jupiter shortly after formation varies by a factor of 2–3 for different choices of model parameters. We find that entropy gradients inside Jupiter persist for ∼10 Myr after formation. We suggest that these gradients should be considered together with heavy-element composition gradients when modelling Jupiter’s evolution and internal structure.

Statistics

Citations

Dimensions.ai Metrics
3 citations in Web of Science®
1 citation in Scopus®
Google Scholar™

Altmetrics

Downloads

1 download since deposited on 05 Mar 2019
1 download since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Language:English
Date:11 July 2018
Deposited On:05 Mar 2019 13:13
Last Modified:17 Sep 2019 19:39
Publisher:Oxford University Press
ISSN:0035-8711
OA Status:Green
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1093/mnras/sty1000
Project Information:
  • : FunderSNSF
  • : Grant ID200021_169054
  • : Project TitleSolar and Extrasolar Giant Planets: Formation, Evolution, and Internal Structure

Download

Download PDF  'The primordial entropy of Jupiter'.
Preview
Content: Published Version
Filetype: PDF
Size: 1MB
View at publisher