Title: Photometric H alpha and [OII] Luminosity Function of SDF and SXDF Galaxies:
Implications for Future Baryon Oscillation Surveys

Author(s): Masanao Sumiyoshi, Tomonori Totani, Shunsuke Oshige,
Karl Glazebrook, and Masayuki Akiyama

Abstract: Efficient selection of emission line galaxies at z > 1 by photometric
information in wide field surveys is one of the keys for future spectroscopic
surveys to constrain dark energy using the baryon acoustic oscillation (BAO)
signature. Here we estimate the H alpha and [O II] line luminosity functions of
galaxies at z = 0.5-1.7 using a novel approach where multi-wavelength imaging data
is used to jointly estimate both photometric redshifts and star-formation rates.
These photometric estimates of line luminosities at high-redshift use the large
data sets of the Subaru Deep Field and Subaru XMM-Newton Deep Field (covering
\sim 1 deg^2) and are calibrated with the spectroscopic data of the local Sloan
Digital Sky Survey galaxies. The derived luminosity functions (especially H alpha)
are in reasonable agreement with the past estimates based on spectroscopic or
narrow-band-filter surveys. This dataset is useful for examining the photometric
selection of target galaxies for BAO surveys because of the large cosmological
volume covered and the large number of galaxies with detailed photometric information.
We use the sample to derive the photometric and physical properties of emission line
galaxies to assist planning for future spectroscopic BAO surveys. We also show some
examples of photometric selection procedures which can efficiently select these emission
line galaxies.