On the Tidal Dissipation of Obliquity

Дата и время публикации : 2013-04-15T16:10:49Z

Авторы публикации и институты :
T. M. Rogers
D. N. C. Lin

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 6 pages, 4 figures, accepted at ApJL
Первичная категория: astro-ph.EP

Все категории : astro-ph.EP

Краткий обзор статьи: We investigate tidal dissipation of obliquity in hot Jupiters. Assuming an initial random orientation of obliquity and parameters relevant to the observed population, the obliquity of hot Jupiters does not evolve to purely aligned systems. In fact, the obliquity evolves to either prograde, retrograde or 90^{o} orbits where the torque due to tidal perturbations vanishes. This distribution is incompatible with observations which show that hot jupiters around cool stars are generally aligned. This calls into question the viability of tidal dissipation as the mechanism for obliquity alignment of hot Jupiters around cool stars.

Category: Physics