Vanderbilt: Vanderbilt scientists sketch rare star system using more than a century of astronomical observations. “Vanderbilt astronomers have painted their best picture yet of an RV Tauri variable—a rare type of stellar binary, in which two stars orbit each other within a sprawling disk of dust. To sketch its characteristics, the scientists mined a 130-year dataset that spans the widest range of light yet collected for one of these systems, from radio waves to X-rays.”