Role of Supergiants in the Formation of Globular Clusters

0517152 - ASÚ 2020 RIV US eng J - Journal Article
Szécsi, Dorottya - Wünsch, Richard
Role of Supergiants in the Formation of Globular Clusters.
Astrophysical Journal. Roč. 871, č. 1 (2019), č. článku 20. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA16-01116S
Institutional support: RVO:67985815
Keywords : galaxies * star clusters * globular clusters
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.746, year: 2019
Method of publishing: Open access

We investigate the role cool supergiants may have played. To do this, we combine two investigative methods: state-of-the-art massive stellar evolution and calculations of the hydrodynamic structure of the cluster gas. This approach allows us to study how star formation in young massive clusters depends on the energy and mass input of the first generation of stars, while predicting the chemical composition of the second generation. We find that the presence of massive (9-500M(circle dot)) metal-poor supergiants in the young cluster leads to a star formation episode within the first 4 Myr of the cluster's lifetime, that is, before the first core-collapse supernovae explode or the gas is expelled.
Permanent Link: http://hdl.handle.net/11104/0302442