期刊
ASTROPHYSICAL JOURNAL
卷 619, 期 1, 页码 L47-L50出版社
UNIV CHICAGO PRESS
DOI: 10.1086/427077
关键词
cosmology : observations; galaxies : evolution; galaxies : luminosity function, mass function; ultraviolet : galaxies
In a companion Letter (Arnouts et al.) we present new measurements of the galaxy luminosity function at 1500 Angstrom out to z similar to 1 using Galaxy Evolution Explorer VIMOS-VLT Deep Survey observations (1039 galaxies with NUV less than or equal to 24.5 and z > 0.2) and at higher z using existing data sets. In this Letter we use the same sample to study evolution of the FUV luminosity density rho(1500). We detect evolution consistent with a (1+z)(2.5+/-0.7) rise to z similar to 1 and (1 + z)(0.5+/-0.4) for z > 1. The luminosity density from the most UV-luminous galaxies (UVLGs) is undergoing dramatic evolution (30 times) between 0 < z < 1. UVLGs are responsible for a significant fraction (>25%) of the total far-ultraviolet luminosity density at z similar to 1. We measure dust attenuation and star formation rates of our sample galaxies and determine the star formation rate density ((rho) over dot(*)) as a function of redshift, both uncorrected and corrected for dust. We find good agreement with other measures of (rho) over dot(*) in the rest ultraviolet and Halpha given the still significant uncertainties in the attenuation correction.
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