Análise asterossísmica de estrelas do tipo solar e gigantes vermelhas

Abstract

Since the advent of controlled photometric missions in space, such as NASA's CoRoT and Kepler, asteroseismology has acquired a central role in our understanding of stellar physics. The TESS mission, in particular, is still releasing excellent photometric observations that contain a great deal of as-yet-uninvestigated information. To exploit the full potential of these data, sophisticated and robust analysis tools are now essential, so they can be further variables of stellar structure and evolutionary models. Furthermore, extracting described asteroseismic properties for many stars can generate new insights about their correlations with fundamental stellar properties and dynamics. The present work presents a comprehensive investigation on the asteroseismic analysis of solar-type stars and red giants, with the objective of estimating asteroseismic metrics and stellar parameters. The study encompasses the integration of data analysis techniques with asteroseismology to extract hidden insights from observed data. In summary, this work combines the areas of Data Analysis and Asteroseismology to develop two Python routines, pyREFPA and pyRMGAP. These routines use data from the Kepler and TESS missions to estimate asteroseismic metrics, stellar parameters and global asteroseismic parameters for solar-type stars and red giants. Although the results obtained by both routines show promising results, they also highlight the presence of certain errors that require further investigation and refinement. Overall, this work lays the groundwork for future advances in the field of asteroseismic analysis and provides a valuable contribution to our understanding of stellar interiors.