Science Goals

The Epoch of Reionisation

VEILS, when combined with existing datasets such as the Dark Energy Survey (DES) and the VISTA Deep Extragalactic Observations (VIDEO), will result in the discovery of new sources at epoch of reionisation. In particular, it will enable the detection of the brightest star-forming galaxies and faint quasars, which could both be important contributors to reionisation. .

Supernova Cosmology

Type 1a supernovae are the most mature and well exploited probes of dark energy. VEILS will increase current samples of Type 1a supernovae by a factor of 10 and assemble light-curves for 300 such transient events out to z~0.6.

Active Galactic Nuclei Dust Lags

VEILS will carry out the first large-scale measurements of the time-lags between accretion disk variability and the hot dust response around AGN to fully establish AGN hot dust time lags as a cosmological probe.

Legacy Science

VEILS, when combined with optical surveys like DES and mid infra-red surveys using Spitzer, will produce photometric redshifts for galaxies over 21 sq-deg, with a drastically reduced outlier fraction relative to studies without the NIR. These galaxies will be used to investigate the stellar-to-halo-mass relation at high-redshifts, search for high-redshift groups and clusters, and search for z~4 galaxies that lie below M* in the galaxy mass function.