The relationship between Centaurs and Jupiter Family Comets with implications for K-Pg-type impacts
Article
Article Title | The relationship between Centaurs and Jupiter Family Comets with implications for K-Pg-type impacts |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Grazier, K. R. (Author), Horner, J. (Author) and Castillo-Rogez, J. C. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 490 (3), pp. 4388-4400 |
Number of Pages | 13 |
Year | 2019 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stz2872 |
Web Address (URL) | https://academic.oup.com/mnras/article/490/3/4388/5586606 |
Abstract | Centaurs - icy bodies orbiting beyond Jupiter and interior to Neptune - are believed to be dynamically related to Jupiter Family Comets (JFCs), which have aphelia near Jupiter's orbit and perihelia in the inner Solar system. Previous dynamical simulations have recreated the Centaur/JFC conversion, but the mechanism behind that process remains poorly described. We have performed a numerical simulation of Centaur analogues that recreates this process, generating a data set detailing over 2.6 million close planet/planetesimal interactions. We explore scenarios stored within that data base and, from those, describe the mechanism by which Centaur objects are converted into JFCs. Because many JFCs have perihelia in the terrestrial planet region, and since Centaurs are constantly resupplied from the Scattered Disc, the JFCs are an ever- present impact threat. |
Keywords | celestial mechanics; comets: general; minor planets; asteroids:; general; Astrophysics - Earth and Planetary Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
510101. Astrobiology | |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2019 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Department of Defence, United States |
Centre for Astrophysics | |
California Institute of Technology (Caltech), United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5756/the-relationship-between-centaurs-and-jupiter-family-comets-with-implications-for-k-pg-type-impacts
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