Analysis of Globular Cluster Photometry from 2MASS

Details Analysis of Globular Cluster Photometry from 2MASS Analysis of Globular Cluster Photometry from 2MASS

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5809s&link_type=abstract

American Astronomical Society, AAS Meeting #211, #58.09; Bulletin of the American Astronomical Society, Vol. 39, p.835

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Scientific paper

Using near-infrared color magnitude diagrams of over 30 Galactic globular clusters, we have measured the magnitude of the red giant branch (RGB) 'bump,' the level of the core-helium burning red clump, and the slope of the RGB. Our aim is to compare our values with those measured by other investigators for the same clusters as we all as to derive new relations between these quantities and cluster properties such as age and metallicity. We find a good correlation between our values and those in the literature albeit with significant scatter. This work will explore the reasons for this scatter and techniques to minimize its effects. This research was supported by an REU supplement to NSF CAREER grant AST00-94048.

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