Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-25T15:41:42.258Z Has data issue: false hasContentIssue false
  • English
  • Français

The pollution of the interstellar medium from AGB stars in Globular Clusters

Published online by Cambridge University Press:  05 March 2015

Paolo Ventura  and
Roberta Carini
Paolo Ventura
Affiliation:
INAF - Osservatorio Astronomico di Roma Via Frascati 33, 00040, Monte Porzio Catone (RM), Italy email: [email protected]
Roberta Carini
Affiliation:
INAF - Osservatorio Astronomico di Roma Via Frascati 33, 00040, Monte Porzio Catone (RM), Italy email: [email protected] Universitá di Roma “La Sapienza”Piazzale Aldo Moro 5, 00135 Rome, Italy email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We discuss the yields from Asymptotic Giant Branch stars, depending on their mass and metallicity. In agreement with previous investigations, we find that the extent of Hot Bottom Burning increases with mass. The yields of models with chemistry typical of high–metallicity Globular Clusters, i.e. Z = 0.008, show only a modest depletion of magnesium, and an oxgen depletion of ~ 0.4 dex. Low–metallicity yields show a much stronger magnesium depletion, and a dramatic drop in the oxygen content, ~ 1.2dex smaller than the initial value. We suggest that the Globular Cluster NGC 2419 is a possible target to the hypothesis of the self–enrichment scenario of Globular Clusters by the winds of Asymptotic Giant Branch stars.

Keywords

stars: AGB and post-AGBstars: abundancesglobular clusters: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Highlights H16: Highlights of Astronomy , August 2012 , pp. 249 - 250
Copyright
Copyright © International Astronomical Union 2015 

References

Ripepi, V., et al. 2007, ApJ, 667, L61CrossRefGoogle Scholar
Ventura, P., D'Antona, F., Mazzitelli, I., & Decressin, T. 2001, ApJ, 550, L65Google Scholar
Ventura, P. & D'Antona, F. 2011, MNRAS, 410, 2760CrossRefGoogle Scholar