The 0.1<z<1.65 evolution of the bright end of the [OII] luminosity function
Abstract
We present the [OII] luminosity function measured in the redshift range 0.1<z<1.65 with unprecedented depth and accuracy. Our measurements are based on medium resolution flux-calibrated spectra of emission line galaxies with the FORS2 instrument at VLT and with the SDSS-III/BOSS spectrograph. The FORS2 spectra and the corresponding catalog containing redshifts and line fluxes are released along with this paper. In this work we use a novel method to combine the aforementioned surveys with GAMA, zCOSMOS and VVDS, which have different target selection, producing a consistent weighting scheme to derive the [OII] luminosity function. The measured luminosity function is in good agreement with previous independent estimates. The comparison with two state-of-the-art semi-analytical models is good, which is encouraging for the production of mock catalogs of [OII] flux limited surveys. We observe the bright end evolution over 8.5 Gyr: we measure the decrease of log L* from 42.4 erg/s at redshift 1.44 to 41.2 at redshift 0.165 and we find that the faint end slope flattens when redshift decreases. This measurement confirms the feasibility of the target selection of future baryonic acoustic oscillation surveys aiming at observing [OII] flux limited samples.
Keywords
Cite
@article{arxiv.1408.1523,
title = {The 0.1<z<1.65 evolution of the bright end of the [OII] luminosity function},
author = {Johan Comparat and Johan Richard and Jean-Paul Kneib and Olivier Ilbert and V. Gonzalez-Perez and Laurence Tresse and Julien Zoubian and Stephane Arnouts and Roland Bacon and Joel R. Brownstein and Carlton Baugh and Timothee Delubac and Anne Ealet and Stephanie Escoffier and Jian Ge and Eric Jullo and Cedric Lacey and Nicholas P. Ross and David Schlegel and Donald P. Schneider and Oliver Steele and Lidia Tasca and Christophe Yeche and Michael Lesser and Zhaoji Jiang and Yipeng Jing and Zhou Fan and Xiaohui Fan and Jun Ma and Jundan Nie and Jiali Wang and Zhenyu Wu and Tianmeng Zhang and Xu Zhou and Zhimin Zhou and Hu Zou},
journal= {arXiv preprint arXiv:1408.1523},
year = {2015}
}
Comments
24 pages, 18 Figures, submitted