ABSTRACT
This chapter discusses star clusters in 18 different star-forming regions included in the Massive Young Star-Forming Complex Study in Infrared and X-Ray study and related studies. It reviews and commentary will encourage statisticians to share their expertise with astronomers, advancing the characterization and understanding of many facets of the universe around. Astronomy is the scientific study of objects beyond Earth: planets, stars, galaxies, and the cosmos itself. Astronomical problems involving mixture models often differ from situations familiar from social or biological sciences. Statistical methods have been important for modeling the spatial distributions of astronomical objects that are physically associated. Star formation is another topic in astronomy where the spatial clustering of objects, in this case young stars, can have important implications. Mixture models are commonly used in astronomy for distinguishing a single class of objects from a mixture of multiple classes of objects.
