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Faculty Sponsor

Dr. Stephen Gillam

Department/Program

Department of Physics

University Affiliation

Indiana University – Purdue University Fort Wayne

Abstract

Presented here are our methods and progress in the understanding of the composition and evolution of globular cluster NGC 2419. According to studies of clusters like Omega Centauri and NGC 1851, some globular clusters are thought to be the leftover cores of dwarf galaxies that have been stripped apart by the gravitational tidal forces of larger nearby galaxies. Since recent studies suggest NGC 2419 came from a dwarf galaxy our cluster will have two different generations of stars (an older red metal-rich generation and a younger blue generation). Our work up to this point has been to develop methods to detect these populations. Making color-magnitude diagrams (CMD), like H-R diagrams, of the cluster we can isolate the two generations of stars in the giants branch of the CMD into the redder and bluer giants. So far we have not found any evidence of this split in the giant branch. However we are still improving our CMD making process. Following is our current developments within our research findings.

Disciplines

Physical Sciences and Mathematics | Physics

Progress in Understanding the Stellar Makeup of Distance Globular Cluster NGC 2419

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