Massarotti, M.M.MassarottiIOVINO, AngelaAngelaIOVINOBUZZONI, AlbertoAlbertoBUZZONI2023-02-062023-02-0620010004-637Xhttp://hdl.handle.net/20.500.12386/33180We study the evolution of the galaxy UV luminosity density as a function of redshift in the Hubble Deep Field-North (HDF-N). We estimate the amount of energy absorbed by dust and hidden from optical observations by analyzing the HDF-N photometric data with the spectral energy distribution fitting method. According to our results, at redshifts of 1<=z<=4.5, the global energy observed in the UV rest frame at λ=1500 Å corresponds to only 7%-11% of the stellar energy output, the rest of it being absorbed by dust and reemitted in the far-IR. Our estimates of the comoving star formation rate density in the universe from the extinction-corrected UV emission are consistent with the recent results obtained with Submillimeter Common-User Bolometric Array (SCUBA) at faint submillimeter flux levels.STAMPAenArticle10.1086/3237872-s2.0-0035486172https://iopscience.iop.org/article/10.1086/323787http://arxiv.org/abs/astro-ph/0109013v12001ApJ...559L.105MFIS/05 - ASTRONOMIA E ASTROFISICA