Miras
Lee Anne Willson, Massimo Marengo

TL;DR
This review summarizes current knowledge on Mira variables, highlighting recent observational and modeling advances, while emphasizing the need for further detailed studies to fully understand their role in stellar evolution.
Contribution
It compiles recent observational data and modeling insights on Mira variables, emphasizing the importance of ongoing observations for advancing stellar evolution understanding.
Findings
Recent interferometry measurements have improved size and structure estimates.
Large samples from the Magellanic Clouds enhance population understanding.
Ongoing observations are crucial for refining models and understanding stellar evolution.
Abstract
Mira variables share essential characteristics: High visual amplitude, periods of hundreds of days, red colors (spectral types M, S, and C), and the presence of emission lines at some phases. They are fundamental mode pulsators, with progenitor masses ranging from >1 to several solar masses. In this review, we summarize what is known from modeling and observational studies, including recent measurements from optical and IR interferometry, and studies involving large samples of stars particularly in the Magellanic Clouds. While we have a good idea of how these stars fit into the big picture of stellar evolution, many important details remain to be settled by a combination of more ambitious models and new observational techniques. Carrying on observations of bright Mira variables will be essential for interpreting observations of large numbers of fainter sources as well as for assessing…
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Educational Leadership and Practices
