There are stars located in the center bulge of the Milky Way and the spiral arms of the Milky Way. What is the difference between the stars at the center bulge and the stars in the arms?

The stars at the center bulge are typically older than the stars in the arms.
The stars at the center bulge are typically older than the stars in the arms.

The stars at the center bulge are typically colder than the stars in the arms.
The stars at the center bulge are typically colder than the stars in the arms.

The stars at the center bulge are typically brighter than the stars in the arms.
The stars at the center bulge are typically brighter than the stars in the arms.

The stars at the center bulge are typically smaller than the stars in the arms.

The stars at the center bulge are typically smaller than the stars in the arms.

Additionally, the stars in the arms of the Milky Way are often younger and more massive compared to the stars in the center bulge. The arms contain regions of active star formation, where new stars are being born, while the center bulge consists of older stars that have already exhausted their fuel and are no longer forming. The stars in the arms also tend to be hotter and bluer, while the stars in the center bulge are cooler and redder.