منابع مشابه
New sub-millimeter limits on dust in the 55 Cancri planetary system
We present new, high-sensitivity sub-millimeter observations towards 55 Cancri, a nearby G8 star with one, or possibly two, known planetary companion(s). Our 850 μm map, obtained with the SCUBA instrument on the James Clerk Maxwell Telescope, shows three peaks of emission at the 2.5 mJy level in the vicinity of the star’s position. However, the observed peaks are 25′′–40′′ away from the star an...
متن کاملDynamics of the 55 Cancri System
Recent studies of the 55 Cancri system suggest the existence of three planets with periods of ∼15 days, ∼45 days, and ∼5500 days (Marcy et al. 2002). The inner two planets are near the 3:1 mean motion commensurability and it is likely that these two planets became trapped in the resonance while farther from the star and migrated together. As the innermost planet begins to dissipate energy throu...
متن کاملThe Dynamical Architecture and Habitable zones of the Quintuplet Planetary System 55 Cancri
We perform numerical simulations to study the secular orbital evolution and dynamical structure in the quintuplet planetary system 55 Cancri with the self-consistent orbital solutions by Fischer and coworkers (2008). In the simulations, we show that this system can be stable at least for 10 yr. In addition, we extensively investigate the planetary configuration of four outer companions with one...
متن کاملN ov 2 00 4 Could the 55 Cancri Planetary System Really Be in the 3 : 1 Mean Motion Resonance ?
We integrate the orbital solutions of the planets orbiting 55 Cnc. In the simulations, we find that not only three resonant arguments θ1 = λ1 −3λ2 +2ω̃1, θ2 = λ1 − 3λ2 + 2ω̃2 and θ3 = λ1 − 3λ2 + (ω̃1 + ω̃2) librate respectively, but the relative apsidal longitudes ∆ω also librates about 250 for millions of years. The results imply the existence of the 3:1 resonance and the apsidal resonance for the...
متن کاملA dynamical perspective on additional planets in 55 Cancri
Five planets are known to orbit the star 55 Cancri. The recently-discovered planet f at 0.78 AU (Fischer et al. 2008) is located at the inner edge of a previously-identified stable zone that separates the three close-in planets from planet d at 5.9 AU. Here we map the stability of the orbital space between planets f and d using a suite of n-body integrations that include an additional, yet-to-b...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2000
ISSN: 0004-637X,1538-4357
DOI: 10.1086/308942