FIRST LIGHT

UVLFz6

Papers using the FirstLight database

UV Luminosity Function and Scaling Relation of Primeval Galaxies

We introduce the FirstLight project that aims to generate a large database of high-resolution, zoom-in simulations of galaxy formation around the epoch of reioni- sation (z > 5). The first results of this program agree well with recent observational constraints at z = 6-8, including the UV luminosity function and galaxy stellar mass function, as well as the scaling relationships between halo mass, stellar mass, and UV magnitude. The UV luminosity function starts to flatten below M_UV = -14 due to stellar feedback in halos with maximum circular velocities of V = 30 =40 km/s. The power-law slope of the luminosity function evolves rapidly with redshift, reaching a value of alpha= 2.5 at z=10. On the other hand, the galaxy stellar mass function evolves slowly with time between z = 8-10, in particular at the low-mass end.

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UV luminosity function at z=6. The FirstLight tests are consistent with observations (Bouwens et al. 2016a). They predict a progressive flattening of the luminosity function at low luminosities (M_UV > -14) driven by stellar feedback.

 

FirstLight II: Star formation rates of primeval galaxies from z=5-15

FirstLight III: Rest-frame UV-optical spectral energy distributions of simulated galaxies at cosmic dawn