The McDonald Accelerating Stars Survey (MASS): Discovery of a Long-Period Substellar Companion Orbiting the Old Solar Analog HD 47127

04. 08 2022

Brown dwarfs

JWST telescope finds its first brown dwarf GLASS-JWST-BD1

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).

16. 06 2022

Brown dwarfs

Results from The COPAINS Pilot Survey: four new brown dwarfs and a high companion detection rate for accelerating stars

23. 02 2022

Brown dwarfs

Discovery of binary brown dwarf with the biggest separation

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).

01. 12 2021

Brown dwarfs

Lithium burning occurs in brown dwarfs more massive than 52 Jupiters

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.