%0 Thesis %A Sánchez de Miguel, Alejandro %T Estudio espectroscópico en el infrarrojo de una muestrade galaxias con formación estelar activa a z=0.8 %D 2008 %U https://hdl.handle.net/20.500.14352/54528 %X We present spectroscopy of 48 galaxies selected using narrow-band filter centred at Hα restframe z=0.84. This work also provide data about physical properties of this galaxies as metallicity, star formation rate relation with mass and other properties. We also study the efects of selection criteria in metallicity results publish in the literature at the moment. %~