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Photometric Evidence for Mixing and Diffusion in GC Stars

Published online by Cambridge University Press:  30 March 2016

Frank Grundahl
Frank Grundahl*
Affiliation:
Institute of Physics and Astronomy, Aarhus University, Ny Munkegade, 8000 Aarhus C, Denmark

Abstract

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Based on Strömgren uvby CCD photometry, and UVES spectroscopy we present evidence that possibly all globular clusters show large variations in their abundances of nitrogen, aluminium and sodium, which are not only due to internal mixing processes. Furthermore the evidence for radiative levitation among hot horizontal branch stars is briefly discussed.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 273 - 275
Copyright
Copyright © Astronomical Society of Pacific 2002

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