Tuesday, December 6, 2011

1107.5038 (M. Cuntz)

Application of the Titius-Bode Rule to the 55 Cancri System: Tentative Prediction of a Possibly Habitable Planet    [PDF]

M. Cuntz
Following the notion that the Titius-Bode rule (TBR) may also be applicable to some extra-solar planetary systems, although this number could be relatively small, it is applied to 55 Cancri, which is a G-type main-sequence star currently known to host five planets. Based on a detailed calculational process that incorporates a generalized version of the TBR, we tentatively predict a hypothetical planet located near 1.51 AU from the star. This planet (if existing) appears to be located at the outskirts of the stellar habitable zone. The existence of this planet is fully consistent with previous detailed orbital stability simulations based on the five known planets. For example, Raymond et al. (2008) [ApJ 689, 478] argued that additional planets would be possible between 55 Cnc f and 55 Cnc d, including planets at locations near 1.51 and 2.95 AU. Specifically, if two additional planets are assumed to exist between 55 Cnc f and 55 Cnc d, the domains of stability would be given as 1.3-1.6 and 2.2-3.3 AU.
View original: http://arxiv.org/abs/1107.5038

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