Search for star clustering: methodology and application to the Two Micron Galactic Survey

A new approach to the study of the large-scale stellar cluster distribution in the Galaxy based on two-point correlation techniques is presented. The basic formalism for this method is outlined, and its applications are then investigated by the use of a simple model of cluster distribution in the Ga laxy. This provides an estimate of the potentials of the two-point correlat ion function for indicating clustering in the measured star positions, whic h can be related to the presence of star clusters in the observed field. Th is technique is then applied to several areas of the Two Micron Galactic Su rvey catalogue, from which information is obtained on the distribution of c lusters according to position in the Galaxy, as well as about age, density of stars, etc.