SIMBAD references

This work investigates the use of a well-known empirical correlation between the velocity dispersion, metallicity and luminosity in Hβ of nearby HII galaxies to measure the distances to HII-like starburst galaxies at high redshifts. This correlation is applied to a sample of 15 starburst galaxies with redshifts between z= 2.17 and z= 3.39 to constrain Ω_m, using data available from the literature. A best-fitting value of Ω_m= 0.21^+0.30_–0.12in a Λ-dominated universe and of Ω_m= 0.11^+0.37_–0.19in an open universe is obtained. A detailed analysis of systematic errors, their causes and their effects on the values derived for the distance moduli and Ω_mis carried out. A discussion of how future work will improve constraints on Ω_mby reducing the errors is also presented.