At Least One-in-Six Galaxies Is Always Dead

Autor:	Abramson, L. E., Kelson, D. D.
Rok vydání:	2020
Předmět:	Astrophysics - Astrophysics of Galaxies Astrophysics - Cosmology and Nongalactic Astrophysics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 3 pages, 1 figure; accepted to RNAAS, 12 Dec 2020
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2012.08050 Zobrazit plný text záznamu View this record from Arxiv