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Related papers: Kuiper Belt Formation via Grainy Planetary Migrati…

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We describe new planetesimal accretion calculations in the Kuiper Belt that include fragmentation and velocity evolution. All models produce two power law cumulative size distributions, N_C propto r^{-q}, with q = 2.5 for radii less than…

Astrophysics · Physics 2009-10-31 Scott J. Kenyon , Jane X. Luu

Recent observational surveys of the outer Solar System provide evidence that Neptune's distant $n$:1 mean-motion resonances may harbor relatively large reservoirs of trans-Neptunian objects (TNOs). In particular, the discovery of two…

Earth and Planetary Astrophysics · Physics 2024-02-02 Matthew W. Porter , David W. Gerdes , Kevin J. Napier , Hsing Wen Lin , Fred C. Adams

This chapter summarizes analytic theory and numerical calculations for the formation and collisional evolution of KBOs at 20--150 AU. We describe the main predictions of a baseline self-stirring model and show how dynamical perturbations…

Astrophysics · Physics 2007-05-23 Scott J. Kenyon , Benjamin C. Bromley , David P. O'Brien , Donald R. Davis

The dynamically cold component of the Kuiper Belt is host to a population of very widely separated, near-equal mass binary systems. Such binaries, representing the tail of the separation distribution of the more common, more tightly-bound…

Earth and Planetary Astrophysics · Physics 2012-07-04 Alex H. Parker

Kuiper Belt objects with absolute magnitude less than 3 (radius $\gtrsim$500 km), the dwarf planets, have a range of different ice/rock ratios, and are more rock-rich than their smaller counterparts. Many of these objects have moons, which…

Earth and Planetary Astrophysics · Physics 2016-05-06 Amy C. Barr , Megan E. Schwamb

The existence of extremely wide binaries in the low-inclination component of the Kuiper Belt provides a unique handle on the dynamical history of this population. Some popular frameworks of the formation of the Kuiper Belt suggest that…

Earth and Planetary Astrophysics · Physics 2015-05-20 Alex H. Parker , JJ Kavelaars

We present observations of thermal emission from fifteen transneptunian objects (TNOs) made using the Spitzer Space Telescope. Thirteen of the targets are members of the Classical population: six dynamically hot Classicals, five dynamically…

Resonant dynamics plays a significant role in the past evolution and current state of our outer Solar System. The population ratios and spatial distribution of Neptune's resonant populations are direct clues to understanding the history of…

(Abridged) 2007 TY430 is the first wide, equal-sized, binary known in the 3:2 mean motion resonance with Neptune. The binary has a maximum separation of 1 arcsec with less than 0.1 mags difference between components with identical ultra-red…

Earth and Planetary Astrophysics · Physics 2015-06-03 Scott S. Sheppard , Darin Ragozzine , Chadwick Trujillo

Observations indicate that some of the largest Kuiper Belt Objects (KBOs) have retained volatiles in the gas phase, which implies the presence of an atmosphere that can affect their reflectance spectra and thermal balance. Volatile escape…

Earth and Planetary Astrophysics · Physics 2015-08-19 R. E. Johnson , A. Oza , L. A. Young , A. N. Volkov , C. Schmidt

Trans-Neptunian Objects (TNOs) in the scattered disk with 50 < a < 100 au are thought to cluster near Neptune's n:1 resonances (e.g: 3:1, 4:1, and so on). While these objects spend lengthy periods of time at large heliocentric distances, if…

Earth and Planetary Astrophysics · Physics 2021-06-30 Matthew S. Clement , Scott S. Sheppard

A relatively massive and moderately eccentric disk of trans-Neptunian objects (TNOs) can effectively counteract apse precession induced by the outer planets, and in the process shepherd highly eccentric members of its population into…

Earth and Planetary Astrophysics · Physics 2019-01-30 Antranik A. Sefilian , Jihad R. Touma

It appears that at least several percent of large Kuiper belt objects are members of wide binaries. Physical collisions are too infrequent to account for their formation. Collisionless gravitational interactions are more promising. These…

Astrophysics · Physics 2009-11-07 Peter Goldreich , Yoram Lithwick , Re'em Sari

To incorporate the gravitational influence of Kuiper belt objects (KBOs) in planetary ephemerides, uniform-ring models are commonly employed. In this paper, for representing the KBO population residing in Neptune's 2:3 mean motion resonance…

Earth and Planetary Astrophysics · Physics 2024-11-07 Yue Chen , Jian Li

The existence of Planet Nine has been suggested to explain the pericenter clustering of extreme trans-Neptunian objects (TNOs). However, the underlying dynamics involving Planet Nine, test particles and Neptune is rich, and it remains…

Earth and Planetary Astrophysics · Physics 2018-11-28 Gongjie Li , Samuel Hadden , Matthew Payne , Matthew J. Holman

We demonstrate that the observed distribution of `Hot Neptune'/`Super-Earth' systems is well reproduced by a model in which planet assembly occurs in situ, with no significant migration post-assembly. This is achieved only if the amount of…

Solar and Stellar Astrophysics · Physics 2015-05-28 Brad M. S. Hansen , Norm Murray

This chapter discusses the dynamical properties of the Kuiper belt population. Then, it focuses on the characteristics of the Kuiper belt that cannot be explained by its evolution in the framework of the current solar system. We review…

Astrophysics · Physics 2007-05-23 A. Morbidelli , H. F. Levison , R. Gomes

The existence of extrasolar planets with short orbital periods suggests that planetary migration induced by tidal interaction with the protoplanetary disk is important. Cores and terrestrial planets may undergo migration as they form. In…

Astrophysics · Physics 2008-11-26 Caroline Terquem , John C. B. Papaloizou

We present preliminary results of a pulsar population synthesis of normal pulsars from the Galactic disk using a Markov Chain Monte Carlo method to better understand the parameter space of the assumed model. We use the Kuiper test, similar…

High Energy Astrophysical Phenomena · Physics 2012-06-27 Peter L. Gonthier , Caleb D. Billman , Alice K. Harding

In this work we study the gravitational influence of the material extending from Uranus orbit to the Kuiper belt and beyond on objects moving within these regions. We conclude that a density distribution given by $\rho(r)=\frac{1}{r}$ (for…

Astrophysics · Physics 2009-11-10 Jose A. de Diego , Dario Nunez , Jesus Zavala