| Seminar: |
CPS Seminar
|
| date: |
2024 August 1 (Thu)15:30-
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| Room: |
CPS Conference Room and Online (Hybrid meeting)
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| Speaker: |
Jeremy Karam (JSPS Postdoctoral Fellow for Research in Japan, Graduate School of Science, University of Tokyo)
|
| Title: |
" The Dynamical Imprints of Hierarchical Star Cluster Assembly "
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| Abstract: |
The evolution of star clusters embedded inside their host giant molecular clouds (GMCs) is a process which involves the merging of smaller sub-clusters with one another in the gas rich environment of the GMC. This process is difficult to observe due to the extinction present around deeply embedded sources. While simulations do provide insight, they can come with their own limitations in the form of resolution. When studying the formation of massive clusters in very massive GMCs (1 - 10 million solar masses), simulators are unable to model the individual sub-clusters along with the large amounts of GMC gas. Instead, they use point particles to model the clusters. We take a previous GMC simulation and zoom into it allowing us to model the clusters as collections of stars and gas. We simulate mergers of these clusters in the GMC environment and compare the dynamics of the merged clusters to observations of older star clusters. We find that mergers imprint dynamical signatures on the resultant cluster including rotation, and anisotropic expansion. As well, we find that background gas can significantly enhance the assembly of star clusters through subcluster mergers. |
| Keywords: |
star cluster, giant molecular cloud, numerical simulation
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| Organizer: |
SAITOH Takayuki
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