Impact disruption of gravity-dominated bodies: New simulation data and scaling
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- 作者：N. Movshovitz ; a ; nmovshov@ucsc.edu" class="auth_mail" title="E-mail the corresponding author ; nmovshov@gmail.com" class="auth_mail" title="E-mail the corresponding author ; F. Nimmoa ; D.G. Korycanskya ; E. Asphaugb ; J.M. Owenc
- 关键词：Collisional physics ; Planetesimals ; Planetary formation
- 刊名：Icarus
- 出版年：2016
- 出版时间：1 September 2016
- 年：2016
- 卷：275
- 期：Complete
- 页码：85-96
- 全文大小：768 K
文摘
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We report results from a suite of simulations of disruptive impacts between gravity-dominated bodies.
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From these we derive a simple scaling law predicting the conditions for catastrophic disruption.
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Disruption is expected when kinetic energy of impact exceeds 2–8 times gravitational binding energy of the system.
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The suggested scaling may be extended to support rotating, differentiated targets.
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The suggested scaling has important implications for models of planetesimal accretion.