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We have proposed an alternative model for the formation of our solar system that does not predict any mean-motion resonant interactions, planetary migrations, or self-gravitating instabilities in the very early isothermal solar nebula and…

Earth and Planetary Astrophysics · Physics 2019-03-05 Dimitris M. Christodoulou , Demosthenes Kazanas

The existence of the Oort Comet Cloud, the Kuiper Belt, and plausible inefficiencies in planetary core formation, all suggest that there was once a residual planetesimal disk of mass 10-100 Earth-masses in the vicinity of the giant planets…

Astrophysics · Physics 2009-10-31 Joseph M. Hahn , Renu Malhotra

Inward migration of giant planets is predicted by hydrodynamical simulations during the gas phase of the protoplanetary disc. The phenomenon is also invoked to explain resonant and near-resonant exoplanetary system structures. The early…

Earth and Planetary Astrophysics · Physics 2021-06-30 Simona Pirani , Anders Johansen , Alexander J. Mustill

The outcome of collisions between small icy bodies, such as Kuiper belt objects, is poorly understood and yet a critical component of the evolution of the trans-Neptunian region. The expected physical properties of outer solar system…

Astrophysics · Physics 2008-11-04 Zoe M. Leinhardt , Sarah T. Stewart

The observed size distribution of Kuiper belt objects (KBOs)--small icy and rocky solar system bodies orbiting beyond Neptune--is well described by a power law at large KBO sizes. However, recent work by Bernstein et al. (2003) indicates…

Astrophysics · Physics 2009-11-10 Margaret Pan , Re'em Sari

Comets are remnants of the icy planetesimals that formed beyond the ice line in the Solar Nebula. Growing from micrometre-sized dust and ice particles to km-sized objects is, however, difficult because of growth barriers and time scale…

Earth and Planetary Astrophysics · Physics 2016-03-02 S. Lorek , B. Gundlach , P. Lacerda , J. Blum

The discovery of binaries in each of the major populations of minor bodies in the solar system is propelling a rapid growth of heretofore unattainable physical information. The availability of mass and density constraints for minor bodies…

Astrophysics · Physics 2009-11-11 Keith S. Noll

In this paper we dynamically determine the mass of the Kuiper Belt Objects by exploiting the latest observational determinations of the orbital motions of the inner planets of the Solar System. Our result, in units of terrestrial masses, is…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Lorenzo Iorio

Modern studies of the early solar system routinely invoke the possibility of an orbital instability among the giant planets triggered by gravitational interactions between the planets and a massive exterior disk of planetesimals. Previous…

Earth and Planetary Astrophysics · Physics 2019-01-30 Billy Quarles , Nathan Kaib

We suppose that some large trans-Neptunian objects could be formed directly by the compression of rarefied dust condensations of the protoplanetary disk, but not by the accretion of smaller planetesimals. About 0.0015 of former…

Astrophysics · Physics 2007-05-23 S. I. Ipatov

The Nice model of Gomes et al. (2005) suggests that the migration of the giant planets caused a planetesimal clearing event which led to the Late Heavy Bombardment (LHB) at 880 Myr. Here we investigate the IR emission from the Kuiper belt…

Earth and Planetary Astrophysics · Physics 2009-10-04 Mark Booth , Mark C. Wyatt , Alessandro Morbidelli , Amaya Moro-Martín , Harold F. Levison

Constraining the formation processes of small solar system bodies is crucial for gaining insights into planetesimal formation. Their bulk densities, determined by their compressive strengths, offer valuable information about their formation…

Earth and Planetary Astrophysics · Physics 2024-08-01 Misako Tatsuuma , Akimasa Kataoka , Hidekazu Tanaka , Tristan Guillot

Circumstellar disks are an essential ingredient of the formation of low-mass stars. It is unclear, however, whether the accretion-disk paradigm can also account for the formation of stars more massive than about 10 solar masses, in which…

Some scenarios for planetesimal formation go through a phase of collapse of gravitationally bound clouds of mm-cm-sized pebbles. Such clouds can form for example through the streaming instability in protoplanetary disks. We model the…

Earth and Planetary Astrophysics · Physics 2017-01-25 Karl Wahlberg Jansson , Anders Johansen , Mohtashim Bukhari Syed , Jürgen Blum

We show, by comparing observations with theoretical models, that the observed Kuiper Belt size distribution is well matched by coagulation models, which start from an initial planetesimal population with radii of about 1km, and subsequent…

Earth and Planetary Astrophysics · Physics 2015-06-12 Hilke E. Schlichting , Cesar I. Fuentes , David E. Trilling

The dynamical structure of the Kuiper belt can be used as a clue to the formation and evolution of the Solar System, planetary systems in general, and Neptune's early orbital history in particular. The problem is best addressed by forward…

Earth and Planetary Astrophysics · Physics 2021-03-03 David Nesvorny

We present a survey on the rotational and physical properties of the dynamically low inclination Cold Classical trans-Neptunian objects. The Cold Classicals (CCs) are primordial planetesimals and contain relevant information about the early…

Earth and Planetary Astrophysics · Physics 2019-05-29 Audrey Thirouin , Scott S. Sheppard

Dawson and Murray-Clay (2012) pointed out that the inner part of the cold population in the Kuiper belt (that with semi major axis a<43.5 AU) has orbital eccentricities significantly smaller than the limit imposed by stability constraints.…

Earth and Planetary Astrophysics · Physics 2015-06-18 A. Morbidelli , H. S. Gaspar , D. Nesvorny

Recent observations (Burnes et al 2002,Veillet et al 2002, Margot et al 2002a) have revealed an unexpectedly high binary fraction among the Trans-Neptunian Objects (TNOs) that populate the Kuiper Belt. The TNO binaries are strikingly…

Astrophysics · Physics 2007-05-23 Yoko Funato , Junichiro Makino , Piet Hut , Eiichiro Kokubo , Daisuke Kinoshita

In the recent years, the "Nice" model of solar system formation has attained an unprecedented level of success in reproducing much of the observed orbital architecture of the solar system by evolving the planets to their current locations…

Earth and Planetary Astrophysics · Physics 2015-05-18 Konstantin Batygin , Michael E. Brown
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