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Recycled stellar ejecta as fuel for star formation
Marijke Seger s, Rob Crain, Joop Schaye (Leiden Obser vator y)

0.5

Fraction contributed by recycling

0.4

35% 19%

SFR Stellar mass AGB stars SN Type Ia Massive stars

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Cosmological SPH simulation: Evolution and Assembly of GaLaxies and their Environments (EAGLE) At z = 0, 35% of the cosmic SFR density and 19% of the cosmic stellar mass density is contributed by stellar ejecta.

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0.0

0

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2 z

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Recycled stellar ejecta as fuel for star formation
Marijke Seger s, Rob Crain, Joop Schaye (Leiden Obser vator y)
1.0
Fraction contributed by recycling

0.8

central galaxies z=0

SFR

Stellar mass AGB stars SN Type Ia Massive stars

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40% 20%

0.4

0.2

0.0 8 10

10

9

1010 10 Stellar mass [M ]

11

108

10

9

1010 10 Stellar mass [M ]

11

For Milky Way-like galaxies, 40% of the present-day SFR and 20% of the present-day stellar mass is contributed by stellar ejecta.