All planetesimals born near the Kuiper belt formed as binaries

@article{Fraser2017AllPB,
  title={All planetesimals born near the Kuiper belt formed as binaries},
  author={Wesley C. Fraser and Michele T. Bannister and Rosemary E. Pike and Micha{\"e}l Marsset and Megan E. Schwamb and J. J. Kavelaars and Pedro Lacerda and David Nesvornyy and Kathryn Volk and Audrey C. Delsanti and Susan D. Benecchi and Matthew J. Lehner and Keith S. Noll and Brett J. Gladman and J. M. Petit and Stephen D. J. Gwyn and Ying-Tung Chen and Shiang‐Yu Wang and Mike Alexandersen and Todd W. Burdullis and Scott S. Sheppard and Chadwick A. Trujillo},
  journal={Nature Astronomy},
  year={2017},
  volume={1},
  pages={0088}
}
The discovery of several Kuiper belt objects (KBOs) with anomalous properties (they are blue-coloured, whereas KBOs of the same type are red, and they are all binaries) gives constraints on formation processes in the outermost region of the Solar System. 

Figures from this paper

Kuiper belt: Formation and evolution
Abstract This chapter reviews accretion models for Kuiper belt objects (KBOs), discussing in particular the compatibility of the observed properties of the KBO population with the streamingExpand
Trans-Neptunian binaries as evidence for planetesimal formation by the streaming instability
A critical step toward the emergence of planets in a protoplanetary disk is the accretion of planetesimals, bodies 1–1,000 km in size, from smaller disk constituents. This process is poorlyExpand
Binary survival in the outer solar system
Abstract As indicated by their special characteristics, the cold classical Kuiper belt objects (KBOs) formed and survived at ≃42–47 au. Notably, they show a large fraction of equal-size binariesExpand
Col-OSSOS: Compositional Homogeneity of Three Kuiper Belt Binaries
The surface characterization of Trans-Neptunian Binaries (TNBs) is key to understanding the properties of the disk of planetesimals from which these objects formed. In the optical wavelengths, it hasExpand
Using the density of Kuiper Belt Objects to constrain their composition and formation history.
TLDR
This model suggests that coagulation, and not gravitational collapse, was the dominant mechanism for KBO formation, and is used to make predictions for the density of Makemake, 2007 OR10, and MU69. Expand
The solar nebula origin of (486958) Arrokoth, a primordial contact binary in the Kuiper Belt
TLDR
The age, composition, and formation process of the most pristine object yet visited by a spacecraft is determined, and stresses in the neck region today are compatible with the structural integrity of Arrokoth for densities and material strengths similar to those observed in comets, but at mass scales ~1000 times the mass of typical cometary nuclei. Expand
Binary Planetesimal Formation from Gravitationally Collapsing Pebble Clouds
Planetesimals are compact astrophysical objects roughly 1–1000 km in size, massive enough to be held together by gravity. They can grow by accreting material to become full-size planets.Expand
Limits on the number of primordial Scattered disc objects at Pluto mass and higher from the absence of their dynamical signatures on the present-day trans-Neptunian Populations
Today, Pluto and Eris are the largest and most massive Trans-Neptunian Objects respectively. They are believed to be the last remnants of a population of planetesimals that has been reduced by >99%Expand
Bi-lobed Shape of Comet 67P from a Collapsed Binary
The Rosetta spacecraft observations revealed that the nucleus of comet 67P/Churyumov-Gerasimenko consists of two similarly sized lobes connected by a narrow neck. Here we evaluate the possibilityExpand
Col-OSSOS: Color and Inclination Are Correlated throughout the Kuiper Belt
Both physical and dynamical properties must be considered to constrain the origins of the dynamically excited distant Solar System populations. We present high-precision (g-r) colors for 25 smallExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 43 REFERENCES
On the Origin of Binary Transneptunian Objects
The observed transneptunian binaries, with components of comparable mass and large separations, cannot be the result of collisions in the present dynamical environment of the Kuiper belt. They couldExpand
DESTRUCTION OF BINARY MINOR PLANETS DURING NEPTUNE SCATTERING
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 theExpand
The Extreme Kuiper Belt Binary 2001 QW322
TLDR
This work reports on the mutual-orbit determination of 2001 QW322, a Kuiper Belt binary with a very large separation whose properties challenge binary-formation and -evolution theories. Expand
FORMATION OF KUIPER BELT BINARIES BY GRAVITATIONAL COLLAPSE
A large fraction of ~100 km class low-inclination objects in the classical Kuiper Belt (KB) are binaries with comparable masses and a wide separation of components. A favored model for theirExpand
Formation of Kuiper-belt binaries by dynamical friction and three-body encounters
TLDR
It is shown that a transient binary forms when two large bodies penetrate one another's Hill sphere (the region where their mutual forces are larger than the tidal force of the Sun) and the loss of energy needed to stabilize the binary orbit can occur through dynamical friction from surrounding small bodies, or through the gravitational scattering of a third large body. Expand
The formation of the Kuiper belt by the outward transport of bodies during Neptune's migration
TLDR
It is shown that the objects currently observed in the dynamically cold Kuiper belt were most probably formed within ∼35 au and were subsequently pushed outward by Neptune's 1:2 mean motion resonance during its final phase of migration. Expand
Formation of Kuiper-belt binaries through multiple chaotic scattering encounters with low-mass intruders
The discovery that many trans-Neptunian objects exist in pairs, or binaries, is proving invaluable for shedding light on the formation, evolution and structure of the outer Solar system. Based onExpand
FORMATION OF KUIPER BELT BINARIES
The discovery that a substantial fraction of Kuiper Belt objects (KBOs) exists in binaries with wide separations and roughly equal masses has motivated a variety of new theories explaining theirExpand
The Deep Ecliptic Survey: A Search for Kuiper Belt Objects and Centaurs. II. Dynamical Classification, the Kuiper Belt Plane, and the Core Population
The Deep Ecliptic Survey (DES)?a search optimized for the discovery of Kuiper belt objects (KBOs) with the Blanco and Mayall 4 m telescopes at the Cerro Tololo Inter-American Observatory and KittExpand
A collisional family of icy objects in the Kuiper belt
TLDR
The discovery of a family of Kuiper belt objects with surface properties and orbits that are nearly identical to those of 2003 EL61, which appears to be fragments of the ejected ice mantle of2003 EL61. Expand
...
1
2
3
4
5
...