Using data from 1,626 eclipsing binariesAlgolobserved by TESS, the researchers found 57
If close double stars, rotating around a common center of mass, obscure each other from us, then they are called eclipsing variables. There are several types of eclipsing double stars:Algol, Beta LyraeAndW Ursa Major.
Eclipsing binaries are the mosta reliable object for obtaining the absolute parameters of stars from photometric and spectroscopic data. And pulsating stars are important for detecting internal structure and measuring distance. Therefore, the study of pulsars in binary systems will help to understand the structure of stars and their evolution.
In April 2018, NASA launched TESS asexoplanet exploration missions. The main mission of the satellite is the search for exoplanets. However, its highly accurate photometric data help in the study of binary and variable stars.
Preliminary results showed that 43 of the targets were components of δ Scuti in classical semi-detached eclipsing binary systems such asAlgol, and the remaining 14 targets were other types of variable stars in eclipsing binaries.
With the new discovery by Chinese scientists, the numberpulsating stars in eclipsing binaries increased by 25%. Studying these objects will help scientists further study mass transfer and tidal forces in binary systems.
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Variable type δ Scuti (δ Sct) is a variable star whose luminosity changes dramatically due to radial and non-radial pulsations of the star's surface.