A fuzzy Multi-Criteria Decision Making approach for Exo-Planetary Habitability
arXiv:2105.08375 · doi:10.1016/j.ascom.2021.100471
Abstract
Nowadays, we know thousands of exoplanets, some of them potentially habitable. Next technological facilities (JWST, for example) have exoplanet atmosphere analysis capabilities, but they also have limits in terms of how many targets can be studied. Therefore, there is a need to rank and prioritize these exoplanets with the aim of searching for biomarkers. Some criteria involved, such as the habitability potential of a dry-rock planet versus a water-rich planet, or a potentially-locked planet versus a tidally-locked planet, are often vague and the use of the fuzzy set theory is advisable. We have applied a combination of Multi-Criteria Decision-Making methodologies with fuzzy logic, the Fuzzy Reference Ideal Method (FRIM), to this problem. We have analyzed the habitability potential of 1798 exoplanets from TEPCat database based on a set of criteria (composition, atmosphere, energy, tidal locking, type of planet and liquid water), in terms of their similarity to the only ideal alternative, The Earth. Our results, when compared with the probability index SEPHI, indicate that Kepler-442b, Kepler-062e/f, and LHS_1140b are the best exoplanets for searching for biomarkers, regardless its technical difficulty. If we take into account current technical feasibility, the best candidate is TRAPPIST-1e.
References in corpus (17)
- The PLATO 2.0 Mission
- Planetary Radii across Five Orders of Magnitude in Mass and Stellar Insolation: Application to Transits
- Mass-Radius Relationships for Solid Exoplanets
- Internal Structure of Massive Terrestrial Planets
- Habitable planets around the star Gl 581?
- A Detailed Model Grid for Solid Planets from 0.1 through 100 Earth Masses
- Exoplanetary Atmospheres - Chemistry, Formation Conditions, and Habitability
- Superhabitable Worlds
- Exploring the Habitable Zone for Kepler planetary candidates
- On the protection of extrasolar Earth-like planets around K/M stars against galactic cosmic rays
- Evolution of Earth-like extrasolar planetary atmospheres: Assessing the atmospheres and biospheres of early Earth analog planets with a coupled atmosphere biogeochemical model
- Erosion of an exoplanetary atmosphere caused by stellar winds
- A Catalog of Stellar Evolution Profiles and the Effects of Variable Composition on Habitable Systems
- Statistical-likelihood Exo-Planetary Habitability Index (SEPHI)
- A HARDCORE model for constraining an exoplanet's core size
- Magnetic properties of Proxima Centauri b analogues
- Similarity indexing of exoplanets in search for potential habitability: application to Mars-like worlds