A dynamical test for terrestrial planets in the habitable zone of HD 204313

Thilliez, Elodie and Jouvin, Lea and Maddison, Sarah T. and Horner, Jonathan (2014) A dynamical test for terrestrial planets in the habitable zone of HD 204313. In: 13th Australian Space Science Conference (ASSC 2013), 30 Sept - 2 Oct 2013, Sydney, Australia.

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Abstract

With improvements in exoplanet detection techniques, the number of multiple planet systems discovered is increasing, while the detection of potentially habitable Earth-mass planets remains complicated and thus requires new search strategies. Dynamical studies of known multiple planet systems are therefore a vital tool in the search for stable and habitable planet candidates. Here, we present a dynamical study of the three-planet system HD 204313 to determine whether it could harbour an Earth-like planet within its habitable zone for a sufficient time to develop life. We found two semi-stable regions in the system, but neither prove stable for long enough for a terrestrial planet to develop life. Our investigations suggest that overlapping weak and high order resonances may be responsible for these semi-stable regions. This study established a framework for a larger project that will study the dynamical stability of the habitable zone of multiple planet systems, providing a list of interesting targets for future habitable low-mass planet searches.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Copyright © 2014 National Space Society of Australia Ltd. No evidence of copyright restrictions preventing deposit of Accepted version.
Faculty / Department / School: No Faculty
Date Deposited: 10 Aug 2017 04:14
Last Modified: 15 Aug 2017 03:37
Uncontrolled Keywords: planetary systems, n-body simulation, dynamical evolution and stability, exoplanets, habitability, astrobiology
Fields of Research : 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020108 Planetary Science (excl. Extraterrestrial Geology)
02 Physical Sciences > 0201 Astronomical and Space Sciences > 020101 Astrobiology
URI: http://eprints.usq.edu.au/id/eprint/32745

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