The Star Formation Main Sequence in the Hubble Space Telescope Frontier Fields

Understand

We investigate the relation between the star formation rate (SFR) and the stellar mass (M), i.e.

• the Main Sequence (MS) relation of star-forming galaxies, at 1.3<=z<6 in the first four HST Frontier Fields, based on rest-frame UV observations.
• Gravitational lensing combined with deep HST observations allows us to extend the analysis of the MS down to stellar masses as low as logM/Msun~7.5 at z<~4 and logM/Msun~8 at higher redshifts, a factor of ~10 below most previous results.
• We perform an accurate simulation to take into account the effect of observational uncertainties on the MS and correct for the Eddington bias.