Brown dwarf

Brown dwarfs are sub-stellar objects (~5 to 90 Jupiter masses) that do not fuse hydrogen into helium in their cores, as do stars on the main sequence, but have fully convective surfaces and interiors, with no chemical differentiation by depth. There is some question as to whether brown dwarfs are required to have experienced fusion at some point in their history; in any event, brown dwarfs heavier than 13 Jupiter masses (M_J) do fuse deuterium.

Related Topics:
Stellar - Jupiter - Hydrogen - Helium - Main sequence - Deuterium

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