A large DESI sample reveals thousands of infalling cold gas absorbers at low redshift, with velocity distributions indicating multiple accretion pathways including radial inflows and satellite accretion.
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Spatially resolved observations of z~0.1 galaxies show Mg II absorption outflow velocities are systematically higher than Hα emission velocities by ~0.4 dex while maintaining similar correlations with star formation rate and surface density.
Cool gas inflows occur in ~70% of red geyser galaxies at median 47 km/s, with reservoirs 7 times larger in radio-detected systems and 2.7 times larger in interacting ones, linking galaxy environment to AGN fueling and quiescence regulation.
citing papers explorer
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Peering down the barrel with DESI DR2: 10 000+ inflows at $z$ < 0.6 reveal how galaxies accrete cold gas
A large DESI sample reveals thousands of infalling cold gas absorbers at low redshift, with velocity distributions indicating multiple accretion pathways including radial inflows and satellite accretion.
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Differences between emission and absorption tracers of spatially resolved outflows in clumpy z ~ 0.1 star-forming galaxies
Spatially resolved observations of z~0.1 galaxies show Mg II absorption outflow velocities are systematically higher than Hα emission velocities by ~0.4 dex while maintaining similar correlations with star formation rate and surface density.
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Galactic Rain: Cool Gas Inflows in Red Geyser Galaxies and Their Connection to AGN Activity and Interactions
Cool gas inflows occur in ~70% of red geyser galaxies at median 47 km/s, with reservoirs 7 times larger in radio-detected systems and 2.7 times larger in interacting ones, linking galaxy environment to AGN fueling and quiescence regulation.