Where are the oldest stars located in a galaxy and why?

Question

Galaxy - Wikipedia

a
Center; the production of newer stars pushes the older stars towards the center of the galaxy
b
Outer area; the radiation from stars tends to put radiative pressure on nearby stars, eventually pushing them outward.
c
Outer area; the original stars are always created at the edge of a galaxy and stay there.
d
Center; gravity is highest in the middle of a galaxy, and older stars have had more time to get pulled towards the center.

Answer 1

The correct answer is:

b Outer area; the radiation from stars tends to put radiative pressure on nearby stars, eventually pushing them outward.

Older stars are typically found in the outer areas of a galaxy. This is due to the process of star formation and the dynamics of stellar evolution, where younger stars are formed in regions with active star formation (often in the spiral arms of galaxies) and older stars can be found in less active regions or the galactic halo. As stars age and go through their life cycles, they may be pushed outward from their original formation areas due to interactions with other stars and the effects of stellar radiation pressure.