We conducted a deep spectroscopic survey, named SSA22-HIT, in the SSA22 field with the DEep Imaging MultiObject Spectrograph (DEIMOS) on the Keck telescope, designed to tomographically map high-z H i gas through analysis of Ly{alpha} absorption in background galaxies spectra. In total, 198 galaxies were spectroscopically confirmed at 2.53.2 in the observed field. From a comparison with publicly available redshift catalogs, we show that our compiled redshift catalog in the SSA22 field is comparable to those among major extragalactic survey fields in terms of a combination of wide area and high surface number density of objects at z>2. About 40% of the spectroscopically confirmed objects in SSA22-HIT show reasonable quality of spectra in the wavelengths shorter than Ly{alpha} when a sufficient amount of smoothing is adopted. Our data set enables us to make the HI tomographic map at z>~3, which we present in a parallel study.

Cone search capability for table J/AJ/165/208/table5 (SSA22-HIT catalog)

Cone search capability for table J/AJ/165/208/table7 (Complete catalog)

Cone search capability for table J/AJ/165/208/table6 (Representative redshift catalog)