Kavli Affiliate: Mark Vogelsberger
| First 5 Authors: William Lake, Michael Y. Grudić, Smadar Naoz, Naoki Yoshida, Claire E. Williams
| Summary:
Among the remarkable strides made by JWST is the discovery of the earliest
star clusters found to date. These have been proposed as early progenitors of
globular clusters, which are known to come from the early stages of star
formation in the Universe. This is an exciting development in modern astronomy,
as it offers an opportunity to connect theoretical models of globular cluster
formation to actual observations of these high-redshift structures. In this
work, we aim to develop observational signatures of a star cluster formation
route known as supersonically induced gas objects, which are dark matter-less
gas clouds in the early Universe proposed as a potential origin of some
globular clusters. For the first time, we follow the star formation process of
these early Universe objects using high-resolution hydrodynamical simulations,
including mechanical feedback. Our results suggest that the first dark
matter-less star clusters are top-heavy, with a higher abundance of massive
stars compared to today’s clusters and extremely high stellar mass surface
densities compared to the local Universe.
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