2005/06/20 by E. Le Floc'h, Floc'h, E. Le, the MIPS team +1
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0506463
5 pages, to appear in the proceedings of the conference "Rencontres de Moriond" held in La Thuile, Italy (March 6-12th, 2005), Ed. D.Elbaz & H.Aussel
arxiv created 2005/06/20 · arxiv updated 2009/12/01
The combination of both contributions from the observed UV emission and the absorbed radiations reprocessed in the infrared represents the ideal approach to constrain the activity of massive star formation in galaxies. Using recent results from GALEX and Spitzer, we compare the evolutions of the UV and IR energy densities with redshift as well as their contributions to the star formation history at 0<z<1. We find that the comoving IR luminosity is characterized by a much faster evolution than seen in the UV. Our results also indicate that ~70% of the star-forming activity at z~1 is produced by the so-called IR-luminous sources (LIR > 1011 Lsol).