8-12 juin, 2014


Photometric Study of the M49 Globular Cluster System

Aisha Mahmoud-Perez (McMaster)

Aisha Mahmoud, William E. Harris, Doug Geisler

Here we explore the ‘blue tilt’ phenomenon in the Virgo giant elliptical NGC 4472 (M49) using Cerro Tololo’s 4m telescope imaging in the R and C bands. We detect a total of 18,000 globular cluster candidates brighter than R = 23. We show that NGC 4472 exhibits no ‘blue tilt’ in the mass-metallicity relation contrary to galaxies with globular clusters with similar sizes and located in a similar environment. We report possible scenarios to account for the absence of the ‘blue tilt.'

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