Simulations show that 10-30% pollution from supermassive star ejecta reproduces the nitrogen-enhanced abundance pattern of GN-z11 and some other high-z galaxies.
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Constrained Local Group hydrodynamical simulations predict up to 8 HI-detectable dark galaxies within 2.5 Mpc of the Milky Way.
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Nitrogen enhancement of GN-z11 by metal pollution from supermassive stars
Simulations show that 10-30% pollution from supermassive star ejecta reproduces the nitrogen-enhanced abundance pattern of GN-z11 and some other high-z galaxies.
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HI-bearing dark galaxies predictions from constrained Local Group simulations: how many and where to find them
Constrained Local Group hydrodynamical simulations predict up to 8 HI-detectable dark galaxies within 2.5 Mpc of the Milky Way.