red colors of the V-K bands, modeled in [@micheva-2010] by a metal-poor (Z=0.001) stellar population of age around 14 Gyr with standard Salpeter IMF, indicating that the galaxy is not undergoing its first star formation event. Ly$\alpha$ emission [@kunth-1998] and Lyman continuum leakage were investigated using UV and X-ray observations in [@bergvall-2006; @hayes-2007; @grimes-2007] and [@leitet-2011]. In [@leitet-2011], they estimated the leakage to be 3%. In particular, the discrepant location of Ly$\alpha$ and H$\alpha$ emission, originating in the ionised gas surrounding the star-forming regions, may be explained by a diffuse ionised ISM in the halo of the galaxy with internal resonant scattering at the surface of clumpy dense neutral clouds [@kunth-2003; @hayes-2007]. These properties have resulted in its popularity as a local analogue of the high-redshift Lyman-break galaxies [@overzier-2008], and therefore a must-study case to link nearby star formation to the distant universe and galaxy evolution.

In the IR, Haro11 is extremely bright compared to other nearby dwarf galaxies. IRAS measurements yielded a FIR luminosity L$\rm{_{FIR}}$ of 1 $\times$ 10$^{11}$ L$\rm{_{\odot}}$ [@sanders-2003] from 40 to 400 $\mu$m using the [@lonsdale-1985] prescription. Its spectral energy distribution (SED) shows a peculiar behavior. It peaks around 40 $\mu$m, indicating the prevalence of warm 