English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

As star clusters are expected to form with low star formation efficiencies,the gas in the cluster is expelled quickly and early in their development: thestar cluster "pops." This leads to an unbound stellar system, evolving in theGalactic potential. Previous N-body simulations have demonstrated the existenceof a stepped number density distribution of cluster stars after popping, bothin vertical position and vertical velocity, with a passing resemblance to aChristmas tree. Using numerical and analytical methods, we investigate thesource of this structure, which arises due to the phase mixing of theout-of-equilibrium stellar system, determined entirely by the backgroundanalytic potential. Considering only the vertical motions, we construct atheoretical model to describe the time evolution of the phase spacedistribution of stars in a Miyamoto-Nagai disk potential and a full Milky-Waytype potential comprising bulge, halo and disk components, which is thencompared with N-body simulations. Using our theoretical model, we investigatethe possible observational signatures and the feasibility of detection.

Phase mixing due to the Galactic potential: steps in the position and velocity distributions of popped star clusters