High-z H-II star-forming galaxies

These results are based on new VLT-KMOS high spectral resolution observations of 41 high-z (1.3 <= z <= 2.6) HIIG combined with published data for 45 high-z and 107 z <= 0.15 HIIG, while the cosmological analysis is based on the MultiNest Markov Chain Monte Carlo (MCMC) procedure not considering systematic uncertainties.

Using only HIIG to constrain the matter density parameter ({Omega}_m_), we find {Omega}_m_ = 0.244^+0.040^_-0.049_ (stat), an improvement over our best previous cosmological parameter constraints, as indicated by a 37 per cent increase of the figure of merit. The marginalized best-fitting parameter values for the plane ({Omega}_m_; w0) = (0.249^+0.11^_-0.065_ ; -1.18^+0.45^_-0.41_) (stat) show an improvement of the cosmological parameters constraints by 40 per cent.