SPH simulations of high-speed collisions between asteroids and comets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10456627" target="_blank" >RIV/00216208:11320/22:10456627 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Sd_h-Dj~O7" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Sd_h-Dj~O7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2022.115064" target="_blank" >10.1016/j.icarus.2022.115064</a>

Result language
angličtina
Original language name
SPH simulations of high-speed collisions between asteroids and comets
Original language description
We studied impact processes by means of smoothed-particle hydrodynamics (SPH) simulations. The method was applied to modelling formation of main-belt families during the cometary bombardment (either early or late, ∼3.85Gy ago). If asteroids were bombarded by comets, as predicted by the Nice model, hundreds of asteroid families (catastrophic disruptions of diameter D≥100km bodies) should have been created, but the observed number is only 20. Therefore we computed a standard set of 125 simulations of collisions between representative D=100km asteroids and high-speed icy projectiles (comets), in the range 8 to 15km/s. According to our results, the largest remnant mass Mlr is similar as in low-speed collisions, due to appropriate scaling with the effective strength Qeff, but the largest fragment mass Mlf exhibits systematic differences — it is typically smaller for craterings and bigger for super-catastrophic events. This trend does not, however, explain the non-existence of old families. The respective parametric relations can be used in other statistical (Monte-Carlo) models to better understand collisions between asteroidal and cometary populations. © 2022 Elsevier Inc.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GA21-11058S" target="_blank" >GA21-11058S: Orbital and chemical evolution of emerging planetary systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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