Abstract
The determination of extragalactic distances is very important because it allows us to determine cosmological parameters like the density of matter and the cosmological constant. Due to their high luminosities, type II supernovae have great potential as extragalactic distances indicators, and offer an independent way to check the accelerating expansion of the universe discovered using type Ia SNe. The expanding photosphere method (EPM) for type II supernovae is a geometrical technique that relates a photometric angular size and a spectroscopic physical size, from which a distance can be determined. In this work, we apply this method to ∼ 25 type II supernovae in order to asses the internal consistency of this technique, the accuracy, and the precision in the derived distances. With these data we construct a Hubble diagram and obtain a measurement of the Hubble constant, independent of the extragalactic distances scale.
