ZFIRE: The Beginning of the End for Massive Galaxies at z ∼ 2 and Why Environment Matters

@article{Harshan2021ZFIRETB,
  title={ZFIRE: The Beginning of the End for Massive Galaxies at z ∼ 2 and Why Environment Matters},
  author={Anishya Harshan and Anshu Gupta and K. V. Tran and Vicente Rodriguez-Gomez and Annalisa Pillepich and Leo Y. Alcorn and Themiya Nanayakkara and Glenn G. Kacprzak and Karl Glazebrook},
  journal={The Astrophysical Journal},
  year={2021},
  volume={919}
}
We use ZFIRE and ZFOURGE observations with the spectral energy distribution fitting tool PROSPECTOR to reconstruct the star formation histories (SFHs) of protocluster and field galaxies at z ∼ 2 and compare our results to the TNG100 run of the IllustrisTNG cosmological simulation suite. In the observations, we find that massive protocluster galaxies ( log[M*/M⊙] > 10.5) form 45% ± 8% of their total stellar mass in the first 2 Gyr of the universe, compared to 31% ± 2% formed in the field… 

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