Brightest Cluster Galaxies and the Intracluster Light

In this chapter, we delve into the formation and primary characteristics of two significant components within galaxy clusters: the brightest cluster galaxies and the intracluster light. Drawing upon recent and pertinent studies in the field, we explore the mechanisms driving their growth from high redshift to the present day. We also examine how these formation mechanisms are intertwined with the dynamical state of their host clusters, suggesting their potential utility as luminous tracers of dark matter.