Investigating Galaxy Ecosystems with Multi-wavelength Observations of Gas and Dust

          @misc{ pirsa_PIRSA:25070051,
            doi = {10.48660/25070051},
            url = {https://pirsa.org/25070051},
            author = {},
            keywords = {Cosmology},
            language = {en},
            title = {Investigating Galaxy Ecosystems with Multi-wavelength Observations of Gas and Dust},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {jul},
            note = {PIRSA:25070051 see, \url{https://pirsa.org}}
          }
          

Abstract

We report results from observations of the CGM ionized, atomic, molecular, and condensed phases using a combination of integral field spectroscopy (MaNGA, VLT MUSE, JWST MRS), and imaging and spectroscopy from HST, VLT, Magellan. In a study of the warm and cool CGM of galaxies mapped with IFS, and a comparison of the kinematics, ionization, and metallicity of this gas with the ionized gas in star-forming regions in the galaxies, we find consistency with a co-rotation of the cool CGM with galaxy disks and hints of changes in gas ionization, potentially due to the stronger intergalactic radiation field at larger galactocentric distance. Our spatially resolved maps of gas metallicity and ionization around galaxies provide constraints on models of the metal distribution around galaxies. Our results are also consistent with higher metallicity and higher ionization parameter for gas at higher elevation angles, as expected for outflows. Our JWST studies of the composition, structure, and extinction properties of the dust grains in both the diffuse and dense ISM/CGM of galaxies at 0