Properties of the single Jovian planet population and the pursuit of Solar system analogues
| Autor: | Sarah T. Maddison, Jonathan Horner, Matthew T. Agnew |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Earth and Planetary Astrophysics (astro-ph.EP)
Physics Solar System education.field_of_study 010504 meteorology & atmospheric sciences Gas giant Population FOS: Physical sciences Astronomy and Astrophysics Planetary system 01 natural sciences Exoplanet Jovian Astrobiology Space and Planetary Science Planet 0103 physical sciences Astrophysics::Earth and Planetary Astrophysics education 010303 astronomy & astrophysics Circumstellar habitable zone Astrophysics - Earth and Planetary Astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 477:3646-3658 |
| ISSN: | 1365-2966 0035-8711 |
| Popis: | While the number of exoplanets discovered continues to increase at a rapid rate, we are still to discover any system that truly resembles the Solar system. Existing and near future surveys will likely continue this trend of rapid discovery. To see if these systems are Solar system analogues, we will need to efficiently allocate resources to carry out intensive follow-up observations. We seek to uncover the properties and trends across systems that indicate how much of the habitable zone is stable in each system to provide focus for planet hunters. We study the dynamics of all known single Jovian planetary systems, to assess the dynamical stability of the habitable zone around their host stars. We perform a suite of simulations of all systems where the Jovian planet will interact gravitationally with the habitable zone, and broadly classify these systems. Besides the system's mass ratio (Mpl/Mstar), and the Jovian planet's semi-major axis (apl) and eccentricity (epl), we find that there are no underlying system properties which are observable that indicate the potential for planets to survive within the system's habitable zone. We use Mpl/Mstar, apl and epl to generate a parameter space over which the unstable systems cluster, thus allowing us to predict which systems to exclude from future observational or numerical searches for habitable exoplanets. We also provide a candidate list of 20 systems that have completely stable habitable zones and Jovian planets orbiting beyond the habitable zone as potential first order Solar system analogues. 14 pages, 10 figures |
| Databáze: | OpenAIRE |
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