Results 31 to 40 of about 3,499 (221)
, 2023 During the formation of our solar system, a large number of planetesimals were ejected into interstellar space by gravitational encounters with the planets. Debris disks observations and numerical simulations indicate that many other planetary systems, now known to be quite common, would have undergone a similar dynamical clearing process.
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Binary formation in planetesimal disks. II. Planetesimals with a mass spectrum [PDF]
Publications of the Astronomical Society of Japan, 2014 Abstract Many massive objects have been found in the outer region of the solar system. How they were formed and evolved has not been well understood, although there have been intensive studies of the accretion process of terrestrial planets. One of the mysteries is the existence of binary planetesimals with near-equal mass components and
Kominami, Junko D., Makino, Junichiro
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PLANETESIMAL COMPOSITIONS IN EXOPLANET SYSTEMS [PDF]
The Astrophysical Journal, 2012 We have used recent surveys of the composition of exoplanet host stars to investigate the expected composition of condensed material in planetesimals formed beyond the snow line in the circumstellar nebulae of these systems. Of the major solid forming elements, we find that, as for the Sun, the C and O abundances (and particularly the C/O abundance ...
Johnson, T.V. +3 more
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Planetesimal Formation by the Gravitational Instability of Dust Ring Structures
The Astrophysical Journal, 2023 We investigate the gravitational instability (GI) of dust ring structures and the formation of planetesimals by their gravitational collapse. The normalized dispersion relation of a self-gravitating ring structure includes two parameters that are related
Sanemichi Z. Takahashi +2 more
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A close-encounter method for simulating the dynamics of planetesimals
, 2020 The dynamics of planetesimals plays an important role in planet formation because their velocity distribution sets the growth rate to larger bodies.
Lorek, Sebastian +3 more
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Erosion of planetesimals by gas flow
, 2020 The first stages of planet formation take place in protoplanetary disks that are largely made up of gas. Understanding how the gas affects planetesimals in the protoplanetary disk is therefore essential.
Mehling, Bernhard +14 more
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Planetesimal Accretion at Short Orbital Periods
The Astrophysical Journal, 2023 Formation models in which terrestrial bodies grow via the pairwise accretion of planetesimals have been reasonably successful at reproducing the general properties of the Solar System, including small-body populations. However, planetesimal accretion has
Spencer C. Wallace, Thomas R. Quinn
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Planetesimal Disk Evolution Driven by Planetesimal-Planetesimal Gravitational Scattering
The Astronomical Journal, 2003 29 pages, 1 figure, submitted to ...
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From stellar nebula to planetesimals
, 2014 Context. Solar and extrasolar comets and extrasolar planets are the subject of numerous studies in order to determine their chemical composition and internal structure. In the case of planetesimals, their compositions are important as they govern in part
Amaury Thiabaud +14 more
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Differentiation and core formation in accreting planetesimals [PDF]
, 2012 Aims. The compositions of meteorites and the morphologies of asteroid surfaces provide strong evidence that partial melting and differentiation were widespread among the planetesimals of the early solar system.
T. Spohn +5 more
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