Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2016, Tutora: María Rosario Isabel López HermosoThe aim of this work is to search optical spectra of Herbig-Haro objects in Taurus
star-forming region and analyse it to make a diagnosis on their physical conditions. We study the
degree of excitation, tracers of electron density, electron temperature and degree of ionization that
are properties which are studied by the analysis on the forbidden emission lines. From a total of 57
catalogued objects, the lines of a sample of 30 knots are presented. It is obtained a range on electron
temperature from 0:9 x 104K and > 1:5 x 104K, an average electron density of 2:5 x 10 3cm -3 and
a minimum electron excitation of 15
