Speaker
Description
The circumgalactic medium (CGM) plays a central role in galaxy evolution
by acting as a gateway for the inflow and outflow of gas and metals, thus
directly influencing star formation and chemical enrichment processes.
By combining imaging and spectroscopy, we can now study the halo
of galaxies in absorption and relate it to galaxy orientation and further
obervable properties. In addition to VLT/MUSE data, our study used
high-resolution data from the VLT/UVES spectrograph to measure the dust
content of the CGM in several galaxies.
The determined dust depletion can act as a proxy for metalicity
under certain circumstances. Our findings reveal a significant correlation
between dust depletion and the azimuthal angle relative to the galaxy's
major axis, suggesting anisotropic patterns in outflow and accretion that
align with hydro-dynamical simulations.
To further investigate the impact of feedback on the halo gas, we
systematically study the chemical enrichment of the CGM in observations of
gas flows that are caught in the act.
Our ongoing research focuses on performing a detailed spectral analysis of
absorption profiles to distinguish outflow and inflow signatures. By
identifying specific abundance patterns, we aim to illuminate the shared
characteristics and disparities in chemical composition and history,
thereby enhancing our understanding of the physical conditions governing
galactic gas flows.
