Plummer Model

The Plummer model is a mathematical way to describe how stars or particles are distributed in a spherical system like a star cluster or galaxy. It provides a smooth, realistic profile of density—how many objects are found at different distances from the center—and how their gravitational potential behaves. By using specific equations, the model helps astronomers understand the structure and dynamics of these systems, especially how stars are spread out and how they influence each other gravitationally. It’s a useful tool for studying the overall behavior of relatively stable, spherical stellar systems.