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29 March 2024
 
  » arxiv » 1802.4279

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Dynamical and biological panspermia constraints within multi-planet exosystems
Dimitri Veras ; David J. Armstrong ; James A. Blake ; Jose F. Gutierrez-Marcos ; Alan P. Jackson ; Hendrik Schaefer ;
Date Mon, 12 Feb 2018 19:00:03 GMT (1850kb)
AbstractAs discoveries of multiple planets in the habitable zone of their parent star mount, developing analytical techniques to quantify extrasolar intra-system panspermia will become increasingly important. Here, we provide user-friendly prescriptions that describe the asteroid impact characteristics which would be necessary to transport life both inwards and outwards within these systems within a single framework. Our focus is on projectile generation and delivery and our expressions are algebraic, eliminating the need for the solution of differential equations. We derive a probability distribution function for life-bearing debris to reach a planetary orbit, and describe the survival of micro-organisms during planetary ejection, their journey through interplanetary space, and atmospheric entry.
Source arXiv, 1802.4279
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