First results from the IllustrisTNG simulations: the galaxy colour bimodality

By D. Nelson, A. Pillepich, Volker Springel, R. Weinberger, L. Hernquist, Rüdiger Pakmor, Shy Genel, P. Torrey, M. Vogelsberger, G. Kauffmann and 2 more. 2017

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We introduce the first two simulations of the IllustrisTNG project, a next generation of cosmological magnetohydrodynamical simulations, focusing on the optical colors of galaxies. We explore TNG100, a rerun of the original Illustris box, and TNG300, which includes 2x2500^3 resolution elements in a volume twenty times larger. Here we present first results on the galaxy color bimodality at low redshift. Accounting for the attenuation of stellar light by dust, we compare the simulated (g-r) colors of 10^9 10^11 Msun which redden at z<1 accumulate on average ~25% of their final z=0 mass post-reddening; at the same time, ~18% of such massive galaxies acquire half or more of their final stellar mass while on the red sequence.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/1414a3c14e2ef61753100aaafdd3a00274b308a9

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Citations in the corpus

First results from the TNG50 simulation: galactic outflows driven by supernovae and black hole feedback (2019, methodology): “The IllustrisTNG project (Pillepich et al. 2018b; Naiman et al. 2018; Nelson et al. 2018a; Marinacci et al. 2018; Springel et al. 2018) is a recent addition to this class of simulation.”
The optical morphologies of galaxies in the IllustrisTNG simulation: a comparison to Pan-STARRS observations (2018, methodology): “Optionally, a simple Charlot & Fall (2000) model can be implemented at this stage in order to estimate the effects of an unresolved dust distribution (e.g. Torrey et al. 2015; Trayford et al. 2015; Nelson et al. 2018).”
The IllustrisTNG simulations: public data release (2018, methodology): “Secondly, this service is also coupled to the FSPS stellar population synthesis code (Conroy et al. 2009; Conroy and Gunn 2010) through python-fsps (Foreman-Mackey et al. 2014), following Nelson et al. (2018a).”
The star formation activity of IllustrisTNG galaxies: main sequence, UVJ diagram, quenched fractions, and systematics (2018, methodology): “…the TNG100 and TNG300 simulations at redshifts 0 6 z 6 2, by extending to higher redshifts and new diagnostics previous TNG analyses of the TNG z = 0 galaxy colors (Nelson et al. 2018a), z = 0 SFRs (Weinberger et al. 2018), and z = 1− 2 SFRs and black-hole (BH) populations (Habouzit et al. 2018).”