Dust production from collisions in extrasolar planetary systems. The inner beta Pictoris disc

@article{Thebault2003DustPF,
  title={Dust production from collisions in extrasolar planetary systems. The inner beta Pictoris disc},
  author={Philippe Jacqu. Thebault and Jean Augereau and Herv'e Beust},
  journal={Astronomy and Astrophysics},
  year={2003},
  volume={408},
  pages={775-788}
}
Dust particles observed in extrasolar planetary discs originate from undetectable km-sized bodies but this valuable information remains uninteresting if the theoretical link between grains and planetesimals is not properly known. We outline in this paper a numerical approach we developed in order to address this issue for the case of dust producing collisional cascades. The model is based on a particle-in-a-box method. We follow the size distribution of particles over eight orders of magnitude… 

Evolution of Dust and Small Bodies: Physical Processes

Planetary debris disks are exposed to the brightness of the central star and for young systems the brightness at wavelengths shorter than the visible is variable in time. The central star ejects a

DIAGNOSING CIRCUMSTELLAR DEBRIS DISKS

A numerical model of a circumstellar debris disk is developed and applied to observations of the circumstellar dust orbiting β Pictoris. The model accounts for the rates at which dust is produced by

Upper limit on the gas density in the β Pictoris system

We investigate the effect of gas drag on the dynamics of the dust particles in the edge-on β Pictoris disc to derive an upper limit on the mass of gas in this system. Our study is motivated by the

On the nature of clumps in debris disks

The azimuthal substructure observed in some debris disks, as exemplified by e Eridani, is usually attributed to resonances with embedded planets. In a standard scenario, the Poynting-Robertson force,

Planetary embryos and planetesimals residing in thin debris discs

We consider constraints on the planetesimal population residing in the discs of AU Microscopii (AU Mic), β Pictoris (β Pic) and Fomalhaut taking into account their observed thicknesses and normal

PLANETESIMALS IN DEBRIS DISKS OF SUN-LIKE STARS

Observations of dusty debris disks can be used to test theories of planetesimal coagulation. Planetesimals of sizes up to a couple of thousand kilometers are embedded in these disks and their mutual

Scattering of small bodies by planets: a potential origin for exozodiacal dust?

High levels of exozodiacal dust are observed around a growing number of main sequence stars. The origin of such dust is not clear, given that it has a short lifetime against both collisions and

Dust distributions in debris disks: effects of gravity, radiation pressure and collisions

We model a typical debris disk, treated as an idealized ensemble of dust particles, exposed to stellar gravity and direct radiation pressure and experiencing fragmenting collisions. Applying the

A Dynamical Simulation of the Debris Disk around HD 141569A

We study the dynamical origin of the structures observed in the scattered-light images of the resolved debris disk around HD 141569A. The disk has two conspicuous spiral rings and two large-scale

Dust spreading in debris discs: do small grains cling on to their birth environment?

Debris discs are dusty belts of planetesimals around main-sequence stars, similar to the asteroid and Kuiper belts in our Solar system. The planetesimals cannot be observed directly, yet they
...

References

SHOWING 1-10 OF 35 REFERENCES

Collisional processes in extrasolar planetesimal discs – dust clumps in Fomalhaut's debris disc

This paper presents a model for the outcome of collisions between planetesimals in a debris disc, and assesses the impact of collisional processes on the structure and size distribution of the disc.

Close stellar encounters with planetesimal discs: the dynamics of asymmetry in the β Pictoris system

We numerically investigate the dynamics of how a close stellar fly-by encounter of a symmetrical circumstellar planetesimal disc can give rise to the many kinds of asymmetries and substructures

Dynamical modeling of large scale asymmetries in the beta Pictoris dust disk

We report a new and complete model of the Pictoris disk, which succeeds in accounting for both the surface brightness distribution, warp characteristics, the outer \butterfly" asymmetry as observed

Falling Evaporating Bodies as a Clue to Outline the Structure of the β Pictoris Young Planetary System

Transient redshifted events monitored in the spectrum offl Pictoris have been interpreted for many years as resulting from the evaporation of numerous comet-like bodies in the vicinity of this stars.

Dust depletion in the inner disk of β Pictoris as a possible indicator of planets

IT is not yet possible to see planets orbiting other stars, although this may soon change as observing methods improve1. Indirect evidence for the presence of circumstellar dust disks out of which

BETA PICTORIS: An Early Solar System?

Beta Pictoris ( Pic) is the best studied of the normal main-sequence stars surrounded by circumstellar dust disks. We review the status of Pic and its disk, and compare it with both the early and the

Submillimeter studies of main-sequence stars

JCMT maps of the 800-micron emission from Vega, Fomalhaut, and Beta Pictoris are interpreted to indicate that they are not ringed by large reservoirs of distant orbiting dust particles that are too

Collisional Erosion in the Primordial Edgeworth-Kuiper Belt and the Generation of the 30-50 AU Kuiper Gap

One of the oustanding questions about the architecture of the outer solar system is how the trans-Neptunian disk of comets and small planet-scale objects known as the solar system's Edgeworth-Kuiper

Falling evaporating bodies in the β Pictoris system - Resonance refilling and long term duration of the phenomenon

The transient spectral absorption events that have been monitored for years towards the star Pictoris have been interpreted as resulting from the transit across the line of sight of evaporating,

The physico-chemical history of Falling Evaporating Bodies around beta Pictoris: investigating the presence of volatiles

Transient spectral absorption events have been monitored for many years toward the star Pictoris and have been interpreted as resulting from the transit across the line of sight of evaporating