01/07/2004 – Auditório Principal Bloco G – IAG/USP

Dr. David Burstein

Arizona State University – EUA

Título/Title: Globular cluster and galaxy formation: M31, the Milky Way and implications
for globular cluster systems of spiral galaxies

Resumo/Abstract:

All spiral galaxies could differ in their globular cluster properties, depending on how many companions each galaxy has, and when the parent galaxy absorbs them. In this spectrum of possibilities, apparently the Milky Way ties down one end, in which almost all of its GCs were absorbed 10–12 Gyr ago. Second, young globular clusters are preferentially formed in the dwarf companions of parent galaxies, and then absorbed by the parent galaxy during mergers. Third, the young GCs seen in tidally interacting galaxies might come from the dwarf companions of these galaxies, rather than be made a-new in the tidal interaction.

 

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