The Expansion History of the Universe Unveiled with H II Galaxies
Chavez, Ricardo (Instituto Nacional de Astrofísica, Óptica y Electrónica (INAOE))

We propose to use the known H II galaxies redshift - distance relation, measured by means of their L(H\beta) - \sigma correlation, in order to determine the Hubble relation to intermediate and high redshifts, in an attempt to constrain the solution space of the dark energy equation of state parameters, as an independent alternative to the cosmological use of type Ia supernovae. We present the local value of H_0 determined by means of the proposed method.