Astrophysics (Index)About

G-dwarf problem

(lack of metal-poor G dwarfs in the Milky Way)

The G-dwarf problem is that fewer G-type stars with low metallicity are observed in the Milky Way than theories of galaxy formation and evolution imply there would be. G-class stars have a sufficiently long main-sequence lifetime that early-generation examples with low metallicity should still be present.

Some observations of other galaxies suggest the problem is also present regarding them.

Further reading: