We investigate the evolution of dust content in galaxies from redshifts z = 0 to z = 9.5. Using empirically motivated prescriptions, we model galactic-scale properties-including halo mass, stellar mass, star formation rate, gas mass, and metallicity-to make predictions for the galactic evolution of dust mass and dust temperature in main-sequence galaxies. Our simple analytic model, which predicts that galaxies in the early universe had greater quantities of dust than their low-redshift counterparts, does a good job of reproducing observed trends between galaxy dust and stellar mass out to z approximate to 6. We find that for fixed galaxy stellar mass, the dust temperature increases from z = 0 to z = 6. Our model forecasts a population of low-mass, high-redshift galaxies with interstellar dust as hot as, or hotter than, their more massive counterparts; but this prediction needs to be constrained by observations. Finally, we make predictions for observing 1.1 mm flux density arising from interstellar dust emission with the Atacama Large Millimeter Array.
Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/627101 |
Date | 08 February 2018 |
Creators | Imara, Nia, Loeb, Abraham, Johnson, Benjamin D., Conroy, Charlie, Behroozi, Peter |
Contributors | Univ Arizona, Dept Astron, Univ Arizona, Steward Observ |
Publisher | IOP PUBLISHING LTD |
Source Sets | University of Arizona |
Language | English |
Detected Language | English |
Type | Article |
Rights | © 2018. The American Astronomical Society. All rights reserved. |
Relation | http://stacks.iop.org/0004-637X/854/i=1/a=36?key=crossref.a2113ffdc2bbbcd5d7be8890133b7c89 |
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