Quantitative indexing and Tardigrade analysis of exoplanets

TL;DR

This paper introduces a new index called Tardigrade Similarity Index (TSI) to assess exoplanets' potential to support Tardigrade life, based on an extended Earth Similarity Index (NESI) with six parameters, applied to over 3300 exoplanets.

Contribution

The paper redefines the Earth Similarity Index by adding two parameters and develops a Tardigrade Survival Index to evaluate exoplanets' habitability for Tardigrades, analyzing a large exoplanet catalog.

Findings

NESI provides a comprehensive measure of exoplanet similarity to Earth.

TSI estimates the potential for Tardigrade survival on various exoplanets.

Cataloging of 3370 exoplanets with NESI and TSI values.

Abstract

Search of life elsewhere in the galaxy is very fascinating area for planetary scientists and astrobiologists. Earth Similarity Index (ESI) is defined as geometrical mean of four physical parameters (Such as radius, density, escape velocity and surface temperature), which is ranging from 1 (identical to Earth) to 0 (dissimilar to Earth). In this work, ESI is re-defined as six parameters by introducing the two new physical parameters like revolution and surface gravity and is called as New Earth Similarity Index (NESI). The main focus of this paper is to search Tardigrade water-life on exoplanets by varying the temperature parameter in NESI, which is called as Tardigrade Similarity Index (TSI), which is ranging from 1 (Tardigrade can survive) to 0 (Tardigrade Cannot survive). Here the NESI and TSI is cataloged and analyzed for almost 3370 confirmed exoplanets.