Cepheids in Eclipsing Binaries. What and How We Can Learn About Them

TL;DR

This paper discusses how analyzing eclipsing binary systems with pulsating stars can precisely determine stellar parameters, test pulsation theories, and improve distance measurements, enhancing our understanding of stellar evolution.

Contribution

It introduces methods to extract fundamental parameters of pulsating stars from eclipsing binaries, including single-lined systems, using combined observational and pulsation theory approaches.

Findings

Accurate measurement of stellar mass and radius from eclipsing binaries.

Determination of the p-factor and distances using pulsating binary systems.

Extension of methods to single-lined binaries with pulsating components.

Abstract

Eclipsing binary systems with pulsating components offer a unique possibility to accurately measure the most important parameters of pulsating stars, to study their evolution, and to test the pulsation theory. I will show what we can learn about the pulsating stars from the analysis of such systems and how we can do it. Special attention will be paid to the mass, radius, p-factor, and distance determination. Although the core of the method is based on the observations of double-lined eclipsing spectroscopic binaries, with the help of the pulsation theory, it is possible to measure absolute parameters for single-lined binaries also.