The Ultraviolet Galaxy Luminosity Function from GALEX data: Color Dependent Evolution at Low Redshift

Abstract

We present measurements of the FUV (1530A) and NUV (2310A) galaxy luminosity functions (LF) at low redshift (z<0.2) from GALEX observations matched to the 2dF Galaxy Redshift Survey. We split our FUV and NUV samples into two UV-bj color bins and two redshift bins. As observed at optical wavelengths, the local LF of the bluest galaxies tend to have steeper faint end slopes and fainter characteristic magnitudes M* than the reddest subsamples. We find evidence for color dependent evolution at very low redshift in both bands, with bright blue galaxies becoming dominant in the highest redshift bin. The evolution of the total LF is consistent with an 0.3 magnitude brightening between z=0 and 0.13, in agreement with the first analysis of deeper GALEX fields probing adjacent and higher redshifts.

This paper will be published as part of the Galaxy Evolution Explorer (GALEX) Astrophysical Journal Letters Special Issue. Links to the full set of papers will be available at : http://www.galex.caltech.edu/PUBLICATIONS/ after November 22, 2004

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Cited by in corpus (24)

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• The GALEX-VVDS Measurement of the Evolution of the Far-Ultraviolet Luminosity Density and the Cosmic Star Formation Rate
• The UV-Optical Color Magnitude Diagram II: Physical Properties and Morphological Evolution On and Off of a Star-Forming Sequence
• The UV Galaxy Luminosity Function in the Local Universe from GALEX Data
• The GALEX-VVDS Measurement of the Evolution of the 1500A Luminosity Function
• The Luminosity Function and Star Formation Rate between Redshifts of 0.07 and 1.47 for Narrow-band Emitters in the Subaru Deep Field
• Determining the Properties and Evolution of Red Galaxies from the Quasar Luminosity Function
• The Star Formation Rate Function of the Local Universe
• The evolution of the luminosity functions in the FORS Deep Field from low to high redshift: II. The red bands
• The Ultraviolet Luminosity Function of GALEX Galaxies at Photometric Redshifts Between 0.07 and 0.25
• Reconstructing the γ-ray Photon Optical Depth of the Universe to z~4 from Multiwavelength Galaxy Survey Data
• Bivariate Galaxy Luminosity Functions in the Sloan Digital Sky Survey
• The ugrizYJHK luminosity distributions and densities from the combined MGC, SDSS and UKIDSS LAS datasets
• Observing the first galaxies
• Predictions for Ultra-Deep Radio Counts of Star-Forming Galaxies
• Far-Ultraviolet Imaging of the Hubble Deep Field North: Star Formation in Normal Galaxies at z<1
• ACCESS II: A Complete Census of Star Formation in the Shapley Supercluster - UV and IR Luminosity Functions
• Comparison of cosmological simulations and deep submillimetre galaxy surveys
• The GALEX UV luminosity function of the cluster of galaxies Abell 1367
• Deep UV Luminosity Functions at the Infall Region of the Coma Cluster
• The WiggleZ Dark Energy Survey: Star-formation in UV-luminous galaxies from their luminosity functions
• The H$\alpha$ and [O III] $\lambda 5007$ Luminosity Functions of $1.2<z<1.9$ Emission-Line Galaxies from HST Grism Spectroscopy
• Keck/Deimos Spectroscopy of a GALEX UV Selecte Sample from the Medium Imaging Survey