Abstract

GOMEZ, José María  and  KEHRIG, Carolina. Multifrecuency study of galaxy IZw18. Rep. cient. FACEN [online]. 2018, vol.9, n.2, pp.88-98. ISSN 2222-145X.  https://doi.org/10.18004/rcfacen.2018.9.2.88.

This paper has done a multifrequency study of the blue compact dwarf galaxy IZw18. It is considered a galaxy similar to primitive galaxies in the distant universe features, given their low metallicity and high rate of star formation. WISE images (near infrared / medium), 2MASS (near infrared), SDSS (visible) and GALEX (ultraviolet) so as to cover a wide range of wavelengths were used. Each image flux density so as to adjust to the outputs of code modeling GRASIL galaxies was obtained the best fit model shows a Spectral Energy Distribution with high flux density values for shorter wavelengths. The history of star formation rate obtained shows an early star formation since about 14 Gyr at a rate of the order of 1x10-4 Msol /yr, which grow slowly reaching a rate of 0.094 Msol / yr.

Keywords : Multfrecuency; flux density; spectral energy distribution..

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