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We present a detailed study of the physical properties of the nebularmaterial in multiple knots of the blue compact dwarf galaxy Haro 15. Using longslit and echelle spectroscopy, obtained at Las Campanas Observatory, we studythe physical conditions (electron density and temperature), ionic and totalchemical abundances of several atoms, reddening and ionization structure. Thelatter was derived by comparing the oxygen and sulphur ionic ratios to theircorresponding observed emission line ratios (the eta and eta' plots) indifferent regions of the galaxy. Applying direct and empirical methods forabundance determination, we perform a comparative analysis between theseregions.

Haro15: Is it actually a low metallicity galaxy?