Fakultät für Physik und Astronomie
STEPHEN PHILLIPS hostreviews.co.uk / UNSPLASH

Revealing the Milky Ways Dissolved Star Cluster Population with Dynamics, Chemistry, and HighDimension Analysis

Jeremy Webb , University of Toronto

The Milky Way consists of a large number of star clusters, with over 150 being labelled as old,metal poor globular clusters and thousands being labelled as young, metal-rich open clusters. However thesenumbers are small compared to the total number of clusters that have ever existed in the Milky Way, as mosthave fully dissolved between their time of formation and the present day. Most of the constraints that havebeen placed on the Milky Ways dissolved star cluster population have been made by extrapolating how thestar cluster initial mass function, initial size function, and formation rate have evolved over time. In thistalk, I will introduce some more direct ways of studying dissolved star clusters that make use of internal starcluster dynamics, orbital dynamics, chemical tagging, and high dimension analysis. More specifically I willintroduce a new method for constraining progenitor cluster properties through deep observations of stellarstreams, demonstrate how stellar siblings can be identified through the combined use of orbital dynamics,chemical tagging, and discuss a new particle spray code that can be used with high dimensional analysis tofind extra-tidal stars.

ARI Institute Colloquium
21 Oct 2021, 11:15
ARI, Moenchhofstrasse 12-14, Seminarraum 1, 1.OG

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