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The dust disk detected by Pioneer at a heliocentric distance of 18 AU is a fraction of the dust generated by the Kuiper belt outside 30 AU. New Horizons will find a very high flux of more than 10 hits per day for each square meter of…

天体物理学 · 物理学 2007-05-23 M. Landgraf

(Abridged) Using an efficient computational approach, we have reconstructed the structure of the dust cloud in the Solar system between 0.5 and 100 AU produced by the Kuiper belt objects. Our simulations offer a 3-D physical model of the…

天体物理学 · 物理学 2007-05-23 Nick N. Gorkavyi , Leonid M. Ozernoy , Tanya Taidakova , John C. Mather

The dust measured in debris disks traces the position of planetesimal belts. In our Solar System, we are also able to measure the largest planetesimals directly and can extrapolate down to make an estimate of the dust. The zodiacal dust…

地球与行星天体物理 · 物理学 2014-05-14 S. M. Lawler , the CFEPS Team

(Abridged) We access the expected EKB dust disk properties by modeling. We treat the debiased population of the known transneptunian objects (TNOs) as parent bodies and generate the dust with our collisional code. The resulting dust…

地球与行星天体物理 · 物理学 2015-06-04 Christian Vitense , Alexander V. Krivov , Hiroshi Kobayashi , Torsten Löhne

We investigate the prospects for detecting dust from two body collisions during the late stages of planet formation at 1-150 AU. We develop an analytic model to describe the formation of a dusty cloud of debris and use numerical coagulation…

天体物理学 · 物理学 2008-11-26 Scott J. Kenyon , Benjamin C. Bromley

Debris disks around main-sequence stars are believed to derive from planetesimal populations that have accreted at early epochs and survived possible planet formation processes. While debris disks must contain solids in a broad range of…

天体物理学 · 物理学 2009-11-13 Alexander V. Krivov , Sebastian Müller , Torsten Löhne , Harald Mutschke

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 produce detectable dust in mutual collisions.…

地球与行星天体物理 · 物理学 2019-06-26 Nicole Pawellek , Attila Moór , Ilaria Pascucci , Alexander V. Krivov

We modeled the 3-D structure of the Kuiper Belt dust cloud at four different dust production rates, incorporating both planet-dust interactions and grain-grain collisions using the collisional grooming algorithm. Simulated images of a model…

地球与行星天体物理 · 物理学 2015-05-19 Marc J. Kuchner , Christopher C. Stark

Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system's counterparts are the asteroid and Edgeworth-Kuiper belts. The DUNES survey aims at detecting…

Debris disks are dusty, gas-poor disks around main sequence stars (Backman & Paresce 1993; Lagrange, Backman & Artymowicz 2000; Zuckerman 2001). Micron-sized dust grains are inferred to exist in these systems from measurements of their…

天体物理学 · 物理学 2007-05-23 Christine H. Chen

(Abridged) A numerical model of a circumstellar debris disk is developed and applied to observations of the circumstellar dust orbiting beta Pictoris. The model accounts for the rates at which dust is produced by collisions among unseen…

地球与行星天体物理 · 物理学 2015-05-19 Joseph M. Hahn

(Abridged) The Edgeworth-Kuiper belt with its presumed dusty debris is a natural reference for extrsolar debris disks. We employ a new algorithm to eliminate the inclination and the distance selection effects in the known TNO populations to…

地球与行星天体物理 · 物理学 2015-05-19 Christian Vitense , Alexander V. Krivov , Torsten Löhne

The NASA New Horizons Venetia Burney Student Dust Counter (SDC) measures dust particle impacts along the spacecraft's flight path for grains with mass $\ge$ $10^{-12}$ g, mapping out their spatial density distribution. We present the latest…

Dust in debris disks is generated by collisions among planetesimals. The existence of these planetesimals is a consequence of the planet formation process, but the relationship between debris disks and planets has not been clearly…

太阳与恒星天体物理 · 物理学 2009-07-22 Ágnes Kóspál , David R. Ardila , Attila Moór , Péter Ábrahám

The presence of dusty debris around main sequence stars denotes the existence of planetary systems. Such debris disks are often identified by the presence of excess continuum emission at infrared and (sub-)millimetre wavelengths, with…

地球与行星天体物理 · 物理学 2019-01-23 Jonathan P. Marshall , S. T. Maddison , E. Thilliez , B. C. Matthews , D. J. Wilner , J. S. Greaves , W. S. Holland

Debris disks are the dust disks found around ~20% of nearby main sequence stars in far-IR surveys. They can be considered as descendants of protoplanetary disks or components of planetary systems, providing valuable information on…

地球与行星天体物理 · 物理学 2018-12-05 Mark C. Wyatt

"Debris disks" around young stars (analogues of the Kuiper Belt in our Solar System) show a variety of non-trivial structures attributed to planetary perturbations and used to constrain the properties of the planets. However, these analyses…

地球与行星天体物理 · 物理学 2013-08-06 W. Lyra , M. Kuchner

Debris disks are scaled-up analogs of the Kuiper Belt in which dust is generated by collisions between planetesimals. In the "collisional cascade" model of debris disks, dust lost to radiation pressure and winds is constantly replenished by…

The number of stars that are known to have debris disks is greater than that of stars known to harbour planets. These disks are detected because dust is created in the destruction of planetesimals in the disks much in the same way that dust…

天体物理学 · 物理学 2008-07-09 M. C. Wyatt

In part I, using an effective computational approach, we have reconstructed the population of dust sources between Jupiter and Neptune. Here, in part II, we present the results on distribution of dust produced by 157 real sources (100…

天体物理学 · 物理学 2007-05-23 Nikolai N. Gor'kavyi , Leonid M. Ozernoy , Tatiana Taidakova
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