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At Least One-in-Six Galaxies Is Always Dead

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 نشر من قبل Louis Abramson
 تاريخ النشر 2020
  مجال البحث فيزياء
والبحث باللغة English
 تأليف L.E. Abramson




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Via numerical experiments, we show that the $sim$10%-20% passive fraction seen at $z>3$ is consistent with galaxy star formation histories being maximally correlated stochastic processes. If so, this fraction should reflect a time-independent baseline that holds at any epoch or mass regime where mean star formation rates are rising. Data at $log M_ast<10$ and $z<0.5$ bear this out, as should future James Webb Space Telescope observations.



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