E-Mail
IMAGE: U Mon's primary star, an elderly yellow supergiant, has around twice the Sun's mass but has billowed to 100 times the Sun's size. Scientists know less about the companion, the...
view more
Credit: Credit: NASA's Goddard Space Flight Center/Chris Smith (USRA/GESTAR)
Astronomers have painted their best picture yet of an RV Tauri variable, a rare type of stellar binary where two stars - one approaching the end of its life - orbit within a sprawling disk of dust. Their 130-year dataset spans the widest range of light yet collected for one of these systems, from radio to X-rays.