2015/11/09 by Guillermo Tenorio-Tagle, G. Tenorio‐Tagle, Casiana Munoz-Tunon +8
Physics and Astronomy · #Astro and Planetary Science #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Gamma-ray bursts and supernovae #Stellar, planetary, and galactic studies #astro-ph.GA
paper · pdf · doi:10.48550/arxiv.1511.02918
Accepted for publication in the Astrophysical Journal Letters, 10pages, 1 figure
arxiv created 2015/11/09 · openalex publication_date 2015/11/09 · arxiv updated 2015/11/11 · openalex created_date 2022/10/05 · openalex updated_date 2026/07/28
Our arguments deal with the early evolution of Galactic globular clusters and show why only a few of the supernovae products were retained within globular clusters and only in the most massive cases (M ≥ 106 Msol), while less massive clusters were not contaminated at all by supernovae. Here we show that supernova blast waves evolving in a steep density gradient undergo blowout and end up discharging their energy and metals into the medium surrounding the clusters. This inhibits the dispersal and the contamination of the gas left over from a first stellar generation. Only the ejecta from well centered supernovae, that evolve into a high density medium available for a second stellar generation in the most massive clusters would be retained. These are likely to mix their products with the remaining gas, leading in these cases eventually to an Fe contaminated second stellar generation.