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Session 82 - Globular Clusters.
Display session, Wednesday, January 17
North Banquet Hall, Convention Center
We have obtained radial velocities and velocity dispersions from integrated light \ echelle spectra of five of the oldest and most compact globular clusters in the Large \ Magellanic Cloud (LMC). The data were taken with the echelle spectrograph at Las \ Campanas Observatory with a resolution of R = 25000. We derive dynamical masses for \ each cluster from our new velocity dispersions. In some cases, the mass determinations \ are based on recently determined structural parameters from Cycle 5 Hubble Space \ Telescope observations. Total luminosities and mass-to-light (M/L) ratios have also \ been derived. We will discuss the temporal evolution of range 10^8 years to the \ oldest observed through M/L ratios in populous LMC clusters.
Program listing for Wednesday