Abstract:
B, V, R and I apparent magnitudes have been determined for 47 HII galaxies from the literature for which high quality spectrophotometric data exist. From these data we derive absolute magnitudes and color indices. The measured absolute magnitudes, MB, are in the range from -22 to -14 with a maximum around -19 and the mean color indices are [M(B) - M(V)] = 0.48+/-0.57, [M(V) - M(R)] = 0.33+/-0.51, [M(R) - M(I)] = 0.26+/-0.59. The behaviour of a possible Metallicity-Luminosity relation is discussed.