The Subaru FMOS galaxy redshift survey (FastSound). II. the emission line catalog and properties of emission line galaxies

Abstract

We present basic properties of 3300 emission line galaxies detected by the FastSound survey, which aremostly H emitters at z 1.2-1.5 in the total area of about 20 deg2, with the H flux sensitivity limit of 1.6 1016 erg cm2 s1 at 4.5 . This paper presents the catalog of the FastSound emission lines and galaxies, which is open to the public.We also present basic properties of typical FastSound H emitters, which have H luminosities of 1041.8-1043.3 erg s1, star formation rates (SFRs) of 20-500M yr1, and stellar masses of 1010.0-1011.3M. The 3D distribution maps for the four fields of Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) W1-4 are presented, clearly showing large scale clustering of galaxies at the scale of 100-600 comoving Mpc. Based on 1105 galaxies with detections of multiple emission lines, we estimate that the contamination of non-H lines is about 4% in the single-line emission galaxies, which is mostly [O III]5007. This contamination fraction is also confirmed by the stacked spectrum of all the FastSound spectra, in which H, [NII]6548,6583, [S II]6717,6731, and [OI]6300,6364 are seen.