A team of University of Hawaii, California Institute of Technology (Caltech) and MIT astronomers using one of the Keck telescopes on Mauna Kea has found evidence for cloudy weather on failed stars. The star in question, 2M1404B, has a mass of about 3 percent of the mass of our sun and lives with its slightly more massive sibling, 2M1404A, 75 light-years away in the constellation of Centaurus. While 2M1404A is socked in by thick clouds, the cloud layer in 2M1404B seems to be breaking up into patches.
Both failed stars are "brown dwarfs," objects whose mass is between that of large gaseous planets, such as Jupiter, and ordinary stars. These are not normal stars because they are not massive enough to fuse hydrogen, so they cool and fade as they age. Normally, the more massive a star or brown dwarf is, the more radiation it emits, so the team was surprised to find that 2M1404B emits 60 percent more near-infrared radiation than its higher-mass sibling.
A team of University of Hawaii, California Institute of Technology (Caltech) and MIT astronomers, using one of the Keck telescopes on Mauna Kea, has found evidence for cloudy weather on failed stars. The star in question, 2M1404B, has a mass of about 3 percent of the mass of our sun and lives with its slightly more massive sibling, 2M1404A, 75 light-years away in the constellation of Centaurus. While 2M1404A is socked in by thick clouds, the cloud layer in 2M1404B seems to be breaking up into patches.