Brown dwarf
Support us by sharing
Astronomers identified the new substellar object in a JWST image of galaxy cluster Abell 2744. The brown dwarf GLASS-JWST-BD1 is a single object more than 2 thousand light years away. It has about 30 jupiter masses (0.03 solar mass).
Brown dwarfs are often found in pairs. However their low gravity is causing them to break away from each other more often than binary stars. Astronomers now found the brown dwarf pair with the widest separation of 129 AU (about 4 times the distance between Neptune and the Sun).
Astronomers found out long time ago that some brown dwarfs contain lithium a some don't. The difference is in their mass and in a new study scientists led by E. L. Martín present their estimate of the lithium limit. Brown dwarfs over 52 jupiter masses should be able to burn lithium and deplete it rather quickly after their creation.