Unveiling a Pulsating Pair: A Close Binary with a Pre-White Dwarf in WASP 1021-28

Lee et al. (2025) analyze the binary system WASP 1021-28, made up of an A-type star and a pre-He white dwarf. Using TESS and VLT data, they model the system’s physical properties and detect pulsations from both stars. Their results reveal insights into stellar evolution, binary interaction, and the role of a distant third star in shaping the system’s history.