Predictions for a planet just inside Fomalhaut's eccentric ring
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...When debris systems are resolved, their morphological structures can be used to constrain the locations of putative planets (e.g., Quillen, 2006) and the dynamical history of the system (Raymond et al., 2011)....
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...Regardless, the significant eccentricity of the debris ring would be consistent with perturbations from planets (Kalas et al., 2005; Quillen, 2006), although hydrodynamic processes could also play a role if there is sufficient gas (Lyra...
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...When debris structures are resolved, the morphologies can be used to place constraints on the architecture of putative planets (Kuchner and Holman, 2003; Quillen, 2006; Moro-Mart́ın et al., 2007; Stark and Kuchner, 2009) and to potentially understand the dynamical history of a system (Raymond et al....
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...For example, the sharp inner edge of the Fomalhaut debris disk seen in scattered light has long suggested sculpting by a planet (Quillen 2006; Chiang et al. 2009)....
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...A planet can also sculpt out sharp edges in a belt (Quillen 2006; Chiang et al. 2009), or force planetesimals onto eccentric or inclined orbits (Wyatt et al. 1999)....
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References
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"Predictions for a planet just insid..." refers background in this paper
...2 T H E P E R I C E N T R E G L OW M O D E L A N D A N E C C E N T R I C E D G E I N F O M A L H AU T ’ S D I S C We follow the theory for secular perturbations induced by a planet (e.g. Murray & Dermott 1999; Wyatt et al. 1999)....
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...Secular perturbations in the plane can be described in terms of the complex eccentricity variable, z = e exp(i ), where e is the object’s eccentricity and is its longitude of periastron (e.g. Murray & Dermott 1999; Wyatt et al. 1999)....
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...The functions, b js (α), are Laplace coefficients (see Murray & Dermott 1999 for definitions and numerical expressions)....
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...The time variation of z is ż = zforced + zproper(t) (1) where zforced = b23/2(α) b13/2(α) ep exp(i p) (2) (Murray & Dermott 1999; Wyatt et al. 1999)....
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1,601 citations
"Predictions for a planet just insid..." refers background or methods in this paper
...(4) We have recovered the scaling with planet mass predicted by previous works (Goldreich & Tremaine 1980; Franklin et al. 1980; Lissauer & Espresate 1998) but have also included a dependence on distance from the planet....
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...Franklin et al. (1980), Goldreich & Tremaine (1980) and Lissauer & Espresate (1998) showed that spiral density waves were efficiently driven at a Lindblad resonance by a satellite when the collision time-scale was above a critical one, t crit, where t crit ∝ μ−2/3, and μ ≡ m p/M ∗ is the ratio of…...
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488 citations
"Predictions for a planet just insid..." refers background in this paper
...The width of this zone has been measured numerically and predicted theoretically for a planet in a circular orbit by predicting the semi-major axis at which the first-order mean motion resonances overlap (Wisdom 1980; Duncan, Quinn & Tremaine 1989; Murray & Holman 1997; Mudryk & Wu 2006)....
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459 citations
"Predictions for a planet just insid..." refers background in this paper
...1 I N T RO D U C T I O N The nearby star Fomalhaut hosts a ring of circumstellar material (Aumann 1985; Gillett 1985) residing between 120 and 160 au from the star (Holland et al. 1998; Dent et al. 2000; Holland et al. 2003)....
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