Volume 378, Number 1, October IV 2001
|Page(s)||97 - 101|
|Published online||15 October 2001|
The self-enrichment of galactic halo globular clusters
The mass-metallicity relation
Institute of Astrophysics and Geophysics, University of Liège, avenue de Cointe 5, 4000 Liège, Belgium
2 Institute of Astronomy, Madingley Road, Cambridge CB3 0HA, UK
Corresponding author: G. Parmentier, firstname.lastname@example.org
Accepted: 16 August 2001
We discuss the existence of a mass-metallicity relation among galactic halo globular clusters. The lack of any luminosity-metallicity correlation in globular cluster systems has been used as an argument against self-enrichment models of cluster formation. We show that such a relation is statistically present among the galactic Old Halo globulars. This observational correlation implies that the least massive old clusters are the most metal-rich. This is in contradiction with the idea that, if globular clusters were self-enriched systems, the most metal-rich clusters would also be the most massive ones. We further show that this anti-correlation is as predicted by self-enrichment models.
Key words: Galaxy: evolution / Galaxy: formation / globular clusters: general / Galaxy: halo
© ESO, 2001
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.