A Possible Dynamical History for the Fomalhaut System

Virginie Faramaz

doi:10.1017/S1743921315006390

A Possible Dynamical History for the Fomalhaut System

Research output: Contribution to journal › Article › peer-review

Abstract

Fomalhaut b was long thought to shape the eccentric debris belt in the Fomalhaut system, but its orbit was found to be too eccentric for it to be the dominant belt-shaping perturber. This indicates that Fomalhaut b is Earth-sized at most and that the belt-shaping perturber, hereafter named Fomalhaut c, remains to be discovered. In addition, since its orbit more or less crosses that of Fomalhaut b, it also indicates that the current configuration of the system is transient and was reached recently. In this talk, we show that this current configuration can be explained if Fomalhaut c is Saturn-to Neptune-sized, and Fomalhaut b originates from a mean-motion resonance with Fomalhaut c.

Original language	English (US)
Pages (from-to)	247-250
Number of pages	4
Journal	Proceedings of the International Astronomical Union
Volume	10
DOIs	https://doi.org/10.1017/S1743921315006390
State	Published - 2015
Externally published	Yes

Keywords

Celestial mechanics
Methods: numerical
Planetary systems
Stars: Fomalhaut

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1017/S1743921315006390

Cite this

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title = "A Possible Dynamical History for the Fomalhaut System",

abstract = "Fomalhaut b was long thought to shape the eccentric debris belt in the Fomalhaut system, but its orbit was found to be too eccentric for it to be the dominant belt-shaping perturber. This indicates that Fomalhaut b is Earth-sized at most and that the belt-shaping perturber, hereafter named Fomalhaut c, remains to be discovered. In addition, since its orbit more or less crosses that of Fomalhaut b, it also indicates that the current configuration of the system is transient and was reached recently. In this talk, we show that this current configuration can be explained if Fomalhaut c is Saturn-to Neptune-sized, and Fomalhaut b originates from a mean-motion resonance with Fomalhaut c.",

keywords = "Celestial mechanics, Methods: numerical, Planetary systems, Stars: Fomalhaut",

author = "Virginie Faramaz",

note = "Publisher Copyright: {\textcopyright} 2016 International Astronomical Union.",

year = "2015",

doi = "10.1017/S1743921315006390",

language = "English (US)",

volume = "10",

pages = "247--250",

journal = "Proceedings of the International Astronomical Union",

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T1 - A Possible Dynamical History for the Fomalhaut System

AU - Faramaz, Virginie

PY - 2015

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N2 - Fomalhaut b was long thought to shape the eccentric debris belt in the Fomalhaut system, but its orbit was found to be too eccentric for it to be the dominant belt-shaping perturber. This indicates that Fomalhaut b is Earth-sized at most and that the belt-shaping perturber, hereafter named Fomalhaut c, remains to be discovered. In addition, since its orbit more or less crosses that of Fomalhaut b, it also indicates that the current configuration of the system is transient and was reached recently. In this talk, we show that this current configuration can be explained if Fomalhaut c is Saturn-to Neptune-sized, and Fomalhaut b originates from a mean-motion resonance with Fomalhaut c.

AB - Fomalhaut b was long thought to shape the eccentric debris belt in the Fomalhaut system, but its orbit was found to be too eccentric for it to be the dominant belt-shaping perturber. This indicates that Fomalhaut b is Earth-sized at most and that the belt-shaping perturber, hereafter named Fomalhaut c, remains to be discovered. In addition, since its orbit more or less crosses that of Fomalhaut b, it also indicates that the current configuration of the system is transient and was reached recently. In this talk, we show that this current configuration can be explained if Fomalhaut c is Saturn-to Neptune-sized, and Fomalhaut b originates from a mean-motion resonance with Fomalhaut c.

KW - Celestial mechanics

KW - Methods: numerical

KW - Planetary systems

KW - Stars: Fomalhaut

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A Possible Dynamical History for the Fomalhaut System

Abstract

Keywords

ASJC Scopus subject areas

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