Final answer:
Stars in globular clusters believed to be products of mergers include blue stragglers and the remnants of dense nuclear regions from larger systems, such as Omega Centauri.
Step-by-step explanation:
Stars within globular clusters that are believed to be the result of mergers are commonly identified as the more unusual, and often massive, stellar populations. These may manifest as blue stragglers, which are hotter and more luminous than the stars at the turnoff point for the cluster and appear to be much younger. Additionally, the most massive globular clusters, such as Omega Centauri, might be remnants of larger systems that have merged with our galaxy, retaining dense nuclei indicative of their complex formation history.
In more general terms, mergers within galaxies can result in starburst activity, leading to the formation of multiple young, blue, type O and B stars, which are also present in newly formed cluster environments. However, within the densely populated centers of globular clusters, interactions and mergers between stars can lead to several phenomena, including the creation of unusually massive stars. These massive stars can represent a population that is the product of stellar mergers.