Most nearby 'rejuvenating' galaxies — those that restarted star formation within the last ~200 Myr — are fueled by gas already present in the galaxy, not by accreted metal-poor gas; one MaNGA galaxy shows clear external accretion.
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Exploring the Origin of Rejuvenating Gas from MaNGA Nearby Galaxies
Most nearby 'rejuvenating' galaxies — those that restarted star formation within the last ~200 Myr — are fueled by gas already present in the galaxy, not by accreted metal-poor gas; one MaNGA galaxy shows clear external accretion.