Planetary spin-axis evolution in the 47 UMa habitable zone

Details Planetary spin-axis evolution in the 47 UMa habitable zone Planetary spin-axis evolution in the 47 UMa habitable zone

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.539..409e&link_type=abstract

In: Proceedings of the Conference on Towards Other Earths: DARWIN/TPF and the Search for Extrasolar Terrestrial Planets, 22-25 A

Other

Extrasolar Planets, Habitable Zone

Scientific paper

The long-term secular perturbations between planets in a planetary system affect their individual obliquities and precession rates. This spin-axis evolution has been numerically investigated for hypothetical Earth-like planets located in and further inward of the habitable zone of the 47 UMa planetary system. If was found that the spin-axis for such a planet can undergo relatively large variations (up to 40°) on short time scales (104 - 105 yr). Such variations are expected to have profound implications for the long-term atmosphere and surface conditions of a planet and put further constraints on the potential habitability in the 47 UMa system.

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