The Age of the Globular Cluster NGC 6652 from WFPC2 Imaging

Details The Age of the Globular Cluster NGC 6652 from WFPC2 Imaging The Age of the Globular Cluster NGC 6652 from WFPC2 Imaging

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.5402c&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #54.02; Bulletin of the American Astronomical Society, Vol. 30, p.896

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Scientific paper

Images of the inner halo globular cluster NGC 6652 have been obtained with WFPC2 on HST. These images have been used to derive a V,V-I color magnitude diagram (CMD) for this moderately metal-rich cluster. The CMD clearly delineates the principal sequences of this cluster, from the upper giant branch to ~ 4 magnitudes below the main sequence turn-off. The reddening, metallicity and distance of NGC 6652 are derived from the CMD. Using a new set of alpha -element enhanced isochrones, the age of NGC 6652 is derived using Delta V(TO - HB), Delta (V - I) and isochrone fitting. This age is compared to ages of other globular clusters in order to further our understanding of the formation of the inner galactic halo.

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