3 ms·
Brown dwarf? Some sputtering early attempts at fusion, but not enough to become self-sustaining. 13 Mj is on the low side of the definition. It's not a definit
by TheOtherHobbes 5y ago
Brown dwarf? Some sputtering early attempts at fusion, but not enough to become self-sustaining.
13 Mj is on the low side of the definition. It's not a definitive number and goes as high as 80 Mj, depending who you ask.
- wumpus 5y ago13 Mj is the current mass at which people think deuterium fusion can start. Above 80 Mj, hydrogen fusion will start. These numbers depend on a lot of details of stellar atmospheres. I took a graduate-level Stellar Atmospheres class from S. Kumar, who first theorized about this class of not-quite-star.