How Clumpy Star Formation Affects Globular Cluster Systems

Galaxies

Jeremy Bailin¹ 

[1] Department of Physics and Astronomy, University of Alabama, Box 870324, Tuscaloosa, AL 35487-0324, USA;

关键词: globular clusters;    star formation;    abundances;    stellar halos;   

DOI  :  10.3390/galaxies5030036

来源: DOAJ

【 摘 要 】

There is now clear evidence the metallicities of globular clusters are not simple tracers of the elemental abundances in their protocluster clouds; some of the heavy elements were formed subsequently within the cluster itself. It is also manifestly clear that star formation is a clumpy process. We present a brief overview of a theoretical model for how self-enrichment by supernova ejecta proceeds in a protocluster undergoing clumpy star formation, and show that it predicts internal abundance spreads in surprisingly good agreement with those in observed Milky Way clusters.

【 授权许可】

Unknown