Previous abstract Next abstract

Session 71 - Globular Clusters.
Display session, Wednesday, January 15
Metropolitan Ballroom,

[71.06] Radial Variations in the Stellar Populations of the Globular Cluster M5.

L. Olguin, J. J. Gonzalez (Inst. de Astronomia - UNAM, Mexico)

We have measured the radial profile of the H_\alpha absorption strength across the globular cluster M5. We have detected a clear gradient in the sense of a increasing line-strength towards the center. Based on stellar calibrations and simple population models, we discuss the observed H_\alpha gradient in terms of mass segregation effects, and set limits for a metallicity gradient and for an age spread in the cluster.

Program listing for Wednesday