ASTRONOMY:
Infrared Gleam Stamps Brown Dwarfs as Stars
Mark Sincell
PASADENA, CALIFORNIA--Surprisingly bright infrared light from free-floating brown dwarfs in the nearby Trapezium star cluster indicates that the mysterious bodies are failed stars and not stray planets, astronomers told the American Astronomical Society here on 7 June. Out of 100 brown dwarfs surveyed in the cluster, astronomers concluded that 63 were bright enough to be harboring protoplanetary disks--vast lenses of dust and gas that form around young stars but not around planets.