Toward Precise Galaxy Evolution: A Comparison between Spectral Indices of z ∼1 Galaxies in the IllustrisTNG Simulation and the LEGA-C Survey

  title={Toward Precise Galaxy Evolution: A Comparison between Spectral Indices of z ∼1 Galaxies in the IllustrisTNG Simulation and the LEGA-C Survey},
  author={Po-Feng 柏鋒 Wu 吳 and Dylan Nelson and Arjen van der Wel and Annalisa Pillepich and Stefano Zibetti and Rachel Bezanson and Francesco DEugenio and Anna R. Gallazzi and Camilla Pacifici and Caroline M. S. Straatman and Ivana Bari{\vs}i{\'c} and Eric F. Bell and Michael V. Maseda and Adam Muzzin and David Sobral and Katherine E. Whitaker},
  journal={The Astronomical Journal},
We present the first comparison of observed stellar continuum spectra of high-redshift galaxies and mock galaxy spectra generated from hydrodynamical simulations. The mock spectra are produced from the IllustrisTNG TNG100 simulation combined with stellar population models and take into account dust attenuation and realistic observational effects (aperture effects and noise). We compare the simulated Dn4000 and EW(Hδ) of galaxies with 10.5≤log(M*/M⊙)≤11.5 at 0.6 ≤ z ≤ 1.0 to the observed… 

The LEGA-C of Nature and Nurture in Stellar Populations at z ∼ 0.6–1.0: D n 4000 and Hδ Reveal Different Assembly Histories for Quiescent Galaxies in Different Environments

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