Cascade disruptions in asteroid clusters

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F20%3A00533955" target="_blank" >RIV/67985815:_____/20:00533955 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.icarus.2019.113554" target="_blank" >https://doi.org/10.1016/j.icarus.2019.113554</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.icarus.2019.113554" target="_blank" >10.1016/j.icarus.2019.113554</a>

Result language
angličtina
Original language name
Cascade disruptions in asteroid clusters
Original language description
We studied asteroid clusters suggesting a possibility of at least two disruption events in their recent history. We searched for new members of known asteroid pairs and clusters and we verified their membership using backward orbital integrations. We found four asteroid clusters, namely the clusters of (11842) Kap'bos, (14627) Emilkowalski, (63440) 2001 MD30 and (157123) 2004 NW5 that show at least two secondary separation events that occurred at significantly different times. We considered a possible formation mechanism for these clusters: The parent of an asteroid cluster was spun up to its critical rotation frequency, underwent a rotation fission and was slowed down by escape of the newly formed secondary/ies. Then the YORP effect spun up the primary again and it reached its critical rotation frequency and underwent another fission. We created a simple model to test whether the scenario of two rotation fission events of a parent primary induced via the YORP effect is possible for the four clusters. We obtained a good agreement between the model and the cluster properties for the clusters of Kap'bos and (63440).
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/GA17-00774S" target="_blank" >GA17-00774S: Physical properties and evolutionary processes of sub-kilometer asteroids</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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