SPIEGEL, David S.; RAYMOND, Sean N.; DRESSING, C. D.

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Licence d’utilisation du document

RAYMOND, Sean N.
Observatoire aquitain des sciences de l'univers [OASU]
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Université Sciences et Technologies - Bordeaux 1 [UB]
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]

DRESSING, C. D.

Langue

Communication dans un congrès

Ce document a été publié dans

American Astronomical Society, AAS Meeting #217, #221.04; Bulletin of the American Astronomical Society, Vol. 43, 2011, American Astronomical Society, AAS Meeting #217, #221.04; Bulletin of the American Astronomical Society, Vol. 43, 2011, 2011-01-09, Seattle. 2011-01, vol. 217, p. 22104

Résumé en anglais

The recent and growing realization that many exoplanetary systems have structures very different from our own motivates a reconsideration of what is meant by "Habitable." For instance, although the Earth's orbit is never far from circular, the architecture of exoplanet systems could cause some terrestrial planets around other stars to experience substantial changes in eccentricity. Eccentricity variations could lead to climate changes, including possible "phase transitions" such as the snowball transition (or its opposite). I will describe how giant planets on sufficiently eccentric orbits can excite extreme eccentricity oscillations in the orbit of a habitable terrestrial planet. This shows that the longterm habitability (and astronomical observables) of a terrestrial planet can depend on the detailed architecture of the planetary system in which it resides.< Réduire

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Unités de recherche

Laboratoire d'Astrophysique de Bordeaux (LAB) - UMR 5804