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Photometric and structural properties of NGC 6544: A combined VVV-Hubble Space Telescope sTUDY

Cohen, Roger E.; Mauro, Francesco; Geisler, Douglas P.; Bidin, Christian Moni; Dotter, Aaron; Bonatto, Charles


We combine archival Hubble Space Telescope imaging with wide-field near-infrared photometry to study the neglected metal-poor Galactic globular cluster NGC 6544. A high spatial resolution map of differential reddening over the inner portion of the cluster is constructed, revealing variations of up to half of the total reddening, and the resulting corrected color-magnitude diagrams reveal a sparse blue horizontal branch and centrally concentrated blue straggler population, verified via relative...[Show more]

CollectionsANU Research Publications
Date published: 2014
Type: Journal article
Source: Astronomical Journal
DOI: 10.1088/0004-6256/148/1/18


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