%0 Book Section %T The Hα nature of the universe at Z∼0.83 publisher Instituto de Astronomía de la UNAM. Universidad Nacional Autónoma de México %D 2007 %U 978-970-32-3274-1 %@ https://hdl.handle.net/20.500.14352/53704 %X We presen there the results of a survey searching for current-star forming galaxies at at z ∼0.83. Objects are selected by their emission in the Hα line through the narrow band filter technique. %~