Which stellar classification would indicate a star with higher abundance of heavier elements?

The classification that indicates a star with a higher abundance of heavier elements is Population I. This category encompasses stars that are relatively young and are primarily found within the disk of the galaxy. Population I stars have formed from the interstellar medium that has been enriched with heavier elements through previous generations of stars, a process known as stellar nucleosynthesis.

These stars typically have a higher metallicity, meaning they contain a greater proportion of elements heavier than hydrogen and helium. This is in contrast to Population II stars, which are older and formed when the universe was less enriched with these heavier elements, and Population III stars, which are thought to have been the first stars formed and consisted mostly of hydrogen and helium with virtually no heavy elements. Population IV is not widely recognized in stellar classifications and does not correspond to a known group with a defined metallicity. Thus, Population I is clearly identified by its higher metal content compared to the other classifications.