younger stars found in greatest numbers in the outer portions of the Galactic disk.
The class of stars with relatively high abundances of heavy elements. These stars are generally found in the disk and spiral arms of spiral galaxies, and are relatively young. The term Population I is also commonly applied to other components of galaxies associated with the star formation, such as the interstellar material.
Young stars with relatively high abundances of metals, found in the disk of a galaxy, especially the spinal arms and in dense regions of interstellar gas. The Sun is a Population I star.
(stars): younger stars including the hot blue stars that have slightly elliptical orbits closely aligned with the disk plane of the Milky Way Galaxy. The youngest stars are found in the spiral arms of the galactic disk.
Stars rich in atoms heavier than helium; usually relatively young stars found in the disk of a galaxy.
the stars making up the solar neighbourhood, the discs of spiral galaxies, and the majority of irregular galaxies: characterised by continuing star formation and hence the presence of young, massive blue stars, though individual Pop. I stars such as the Sun can be quite old; generally high in heavy elements as a result of being formed from gas enriched by earlier supernovae.
Stars rich in atoms heavier than helium. Nearly always relatively young stars found in the disk of the galaxy.