First results from the IllustrisTNG simulations: the galaxy colour bimodality
Name
1707.03395.pdf
Description
Accepted version
Size
7.52 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Nelson, Dylan
Pillepich, Annalisa
Springel, Volker
Weinberger, Rainer
Hernquist, Lars
Pakmor, Rüdiger
Genel, Shy
Torrey, Paul
Vogelsberger, Mark
Kauffmann, Guinevere
Date Issued
2018
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press (OUP)
Version
Author's final manuscript
Abstract
© 2017 The Author(s). We introduce the first two simulations of the IllustrisTNG project, a next generation of cosmological magnetohydrodynamical simulations, focusing on the optical colours of galaxies. We explore TNG100, a rerun of the original Illustris box, and TNG300, which includes 2 × 25003 resolution elements in a volume 20 times larger. Here, we present first results on the galaxy colour bimodality at low redshift. Accounting for the attenuation of stellar light by dust, we compare the simulated (g - r) colours of 109 1011M⊙ which redden at z < 1 accumulate on average ~25 per cent of their final z = 0 mass post-reddening; at the same time, ~18 per cent of such massive galaxies acquire half or more of their final stellar mass while on the red sequence.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1093/MNRAS/STX3040
