Physics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aps..4cf.k1001a&link_type=abstract
American Physical Society, Annual Meeting of the Four Corners Section of the APS, October 15-16, 2010, abstract #K1.001
Physics
Scientific paper
We explore the impact of obliquity variations on planetary habitability in realistic systems with high mutual inclination. We first numerically integrate the orbital evolution with N-body simulations and verify stability on 10^8 year timescales. We then calculate the obliquity variations induced by the orbital architecture on 1 Earth mass (terrestrial) planets at 1 AU around a solar-mass star. Finally, we run energy balance models (EBM) on the terrestrial planets to assess surface temperature, which we assume is a proxy for habitability. We present general trends in obliquity changes and evaluate those changes in terms of habitability. Finally, we explore the limits of the habitable zone for planets with dramatic obliquity variations by changing the terrestrial planet's semi-major axis via EBM calculations for 10^6 years.
Armstrong J. J.
Barnes Rory
Domagal-Goldman Shawn
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