•
•Degenerate
Electron Pressure limits contraction and core temperature
–“Stars”
with M < 0.08 MSun never burn H (brown dwarfs)
–Stars with M < 0.4 MSun never burn He (red dwarfs)
–Stars with M < 4 MSun never burn C (but do make red
giants)
–Stars with M > 4 MSun do burn elements all the way to Fe
–
•What
happens to these objects?
–Brown
dwarfs never become bright – sort of giant version of Jupiter
–Red
dwarfs have such long lives none have yet exhausted H
–Red
giants are related to white dwarfs
–Massive
stars explode as supernova