Catalogue and Properties of {\delta} Scuti Stars in Binaries

TL;DR

This paper compiles a comprehensive catalogue of 199 binary systems with { extdelta} Scuti pulsators, analyzing their properties, distributions, and correlations to enhance understanding of pulsations in binary stars.

Contribution

It provides the largest dataset to date on { extdelta} Scuti stars in binaries, including detailed demographic and property analyses based on Roche geometry.

Findings

A threshold of ~13 days orbital period affects pulsation influence.

Distributions of pulsating components in various diagrams are characterized.

Updated correlations between pulsation and orbital periods are presented.

Abstract

The catalogue contains 199 confirmed cases of binary systems containing at least one pulsating component of {\delta} Scuti type. The sample is divided into subgroups in order to describe the properties and characteristics of the {\delta} Sct type stars in binaries according to their Roche geometry. Demographics describing quantitatively our knowledge for these systems as well as the distributions of their pulsating components in the Mass-Radius, Colour-Magnitude and Evolutionary Status-Temperature diagrams are presented and discussed. It is shown that a threshold of ~13 days of the orbital period regarding the influence of binarity on the pulsations is established. Finally, the correlations between the pulsation periods and the orbital periods, evolutionary status, and companion's gravity influence are updated based on the largest sample to date.