Description
The galactic bar has profound effects on the orbits of stars in the galaxy. A manifestation of the bar’s influence is the trapping of stars in resonance with the bar. Stars trapped at resonance can appear as overdensities in phase space, as well as in the space of energy and angular momentum. In the Milky Way, with information on stars’ positions and velocities on a star-by-star basis, we can study these effects of stars being trapped in resonance in detail. Bar-induced, dynamical substructures are thought to have been recently identified in the stellar halo of the Milky Way, using data from the Gaia satellite, and have been explored using test particle simulations. We report on evidence of this phenomenon in a cosmological simulation from the ultra-high resolution Auriga Superstars suite, made possible by its stellar resolution of $\mathrm{800 \; M_{\odot}}$. I will present my analysis of the effects of the trapping of stars in resonances in the stellar halo in different regions of the galaxy, as well as explore how these resonances are observed across different metallicities and in the in-situ and accreted components, in order to inform and interpret recent observational findings.
