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Stars less massive than 1.4 MSun
can end as white dwarfs
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Stars more massive than 1.4 MSun
can end as white dwarfs,
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if they lose enough of their mass (during PN stage)
that
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they end up with less than 1.4 MSun
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Stars whose degenerate cores grow more massive than
1.4
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MSun will undergo a catastrophic core
collapse:
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Neutron stars
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Supernova
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