Prospecting for exo-Earths in multiple planet systems with a gas giant
Article
Article Title | Prospecting for exo-Earths in multiple planet systems with a gas giant |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Agnew, Matthew T. (Author), Maddison, Sarah T. (Author) and Horner, Jonathan (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 481 (4), pp. 4680-4697 |
Number of Pages | 18 |
Year | 2018 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/sty2509 |
Web Address (URL) | https://academic.oup.com/mnras/article/481/4/4680/5097893 |
Abstract | In this work, we hunt for the best places to find exo-Earths in the currently known exoplanet population. While it is still unclear whether Jupiter had a beneficial or detrimental effect on the creation of the right environment for a habitable Earth to develop, we focus on the 51 multiple planet systems that have at least one Jupiter-like planet and aim to identify which would be good candidates to host an exo-Earth. We conduct a series of numerical simulations to identify dynamically stable regions of the habitable zone of the multiple exoplanet systems capable of hosting an Earth-mass planet. We produce a candidate list of 16 systems that could host such a stable exo-Earth in their habitable zone, and for which the induced radial velocity signal of a hypothetical one, two or four Earth-mass planet on the host star would be detectable with the ESPRESSO spectrograph. We find that whilst the gravitational interactions with the massive planet nearest the habitable zone are critical in determining stability, the secular resonant interactions between multiple planets can also have a dramatic influence on the overall stability of the habitable zone. |
Keywords | astrobiology; planets and satellites; dynamical evolutionand stability |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Swinburne University of Technology |
Centre for Astrophysics | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q518w/prospecting-for-exo-earths-in-multiple-planet-systems-with-a-gas-giant
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