Evolution of the Luminosity Function, Star Formation Rate, Morphology, and Size of Star‐forming Galaxies Selected at Rest‐Frame 1500 and 2800 A

Using the multiwavelength photometric and spectroscopic data covering theCDF-S obtained within the GOODS, we investigate the rest-frame UV properties ofgalaxies to z~2.2, including the evolution of the luminosity function, theluminosity density, star formation rate (SFR) and galaxy morphology. We find asignificant brightening (~ 1 mag) in the rest-frame 2800A characteristicmagnitude (M*) over the redshift range 0.32.5) increases from ~10% at z~0.5 to ~30% at z~2.2. At the sametime, we note that galaxies get bluer at increasing redshift. This suggests ascenario where an increased fraction of the star formation takes place inbulge-dominated systems at high redshift. This could be the evidence that thepresent day ellipticals are a result of assembly (i.e., mergers) of galaxies atz>1. Finally, we find that galaxy sizes for a luminosity selected sampleevolves as (1+z)^{-1.1} between redshifts z=2.2 and z=1.1. This is consistentwith previous measurements and suggests a similar evolution over the redshiftrange 0 < z < 6.Comment: 38 pages with 14 figures. Accepted for publication in Ap