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Dynamical and biological panspermia constraints within multi-planet exosystems
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Veras, Dimitri, Armstrong, David J., Blake, James A., Gutierrez-Marcos, José F., Jackson, Alan P. and Schäfer, Hendrik (2018) Dynamical and biological panspermia constraints within multi-planet exosystems. Astrobiology, 18 (9). pp. 1106-1122. doi:10.1089/ast.2017.1786 ISSN 1531-1074.
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Official URL: https://doi.org/10.1089/ast.2017.1786
Abstract
As 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 microorganisms during planetary ejection, their journey through interplanetary space, and atmospheric entry.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QB Astronomy | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) Faculty of Science, Engineering and Medicine > Science > Physics |
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Library of Congress Subject Headings (LCSH): | Extrasolar planets, Habitable planets, Collisions (Astrophysics), Exobiology, Life on other planets | ||||||||||||||||||
Journal or Publication Title: | Astrobiology | ||||||||||||||||||
Publisher: | Mary Ann Liebert | ||||||||||||||||||
ISSN: | 1531-1074 | ||||||||||||||||||
Official Date: | 12 September 2018 | ||||||||||||||||||
Dates: |
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Volume: | 18 | ||||||||||||||||||
Number: | 9 | ||||||||||||||||||
Page Range: | pp. 1106-1122 | ||||||||||||||||||
DOI: | 10.1089/ast.2017.1786 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Reuse Statement (publisher, data, author rights): | “Final publication is available from Mary Ann Liebert, Inc., publishers https://doi.org/10.1089/ast.2017.1786 | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 14 February 2018 | ||||||||||||||||||
Date of first compliant Open Access: | 19 September 2018 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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