The UV Galaxy Luminosity Function in the Local Universe from GALEX Data

Details The UV Galaxy Luminosity Function in the Local Universe from GALEX Data The UV Galaxy Luminosity Function in the Local Universe from GALEX Data

2004-11-13

arxiv.org/abs/astro-ph/0411364v1

Astrophys.J. 619 (2005) L15-L18

Astronomy and Astrophysics

Astrophysics

This paper will be published as part of the Galaxy Evolution Explorer (GALEX) Astrophysical Journal Letters Special Issue. Lin

Scientific paper

10.1086/424735

We present the results of a determination of the galaxy luminosity function at ultraviolet wavelengths at redshifts of $z=0.0-0.1$ from GALEX data. We determined the luminosity function in the GALEX FUV and NUV bands from a sample of galaxies with UV magnitudes between 17 and 20 that are drawn from a total of 56.73 deg^2 of GALEX fields overlapping the b_j-selected 2dF Galaxy Redshift Survey. The resulting luminosity functions are fainter than previous UV estimates and result in total UV luminosity densities of 10^(25.55+/-0.12) ergs s^-1 Hz^-1 Mpc^-3 and 10^(25.72+/-0.12) ergs s^-1 Hz^-1 Mpc^-3 at 1530 Ang. and 2310 Ang., respectively. This corresponds to a local star formation rate density in agreement with previous estimates made with H-alpha-selected data for reasonable assumptions about the UV extinction.

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