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Potential Habitability as a Stellar Property: Effects of Model Uncertainties and Measurement Precision by Tuchow, Noah; Wright, Jason is a scholarly article available to read on EtoBox.

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Knowledge of a star's evolutionary history combined with estimates of planet occurrence rates allows one to infer its relative quality as a location in the search for biosignatures, and to quantify this intuition using long-term habitability metrics. In this study, we analyse the sensitivity of the biosignature yield metrics formulated by Tuchow & Wright (2020) to uncertainties in observable stellar properties and to model uncertainties. We characterize the uncertainties present in fitting a models to stellar observations by generating a stellar model with known properties and adding synthetic uncertainties in the observable properties. We scale the uncertainty in individual observables and observe the the effects on the precision of properties such as stellar mass, age, and our metrics. To determine model uncertainties we compare four well accepted stellar models using different model physics and see how they vary in terms of the values of our metrics. We determine the ability of future missions to rank target stars according to these metrics, given the current precision to which host star properties can be measured. We show that obtaining independent age constraints decreases bot

Author

Tuchow, Noah; Wright, Jason

Published

2021

Language

EN