HETDEX Public Source Catalog (Version 3.2)

HETDEX is an integral field spectroscopic survey designed to measure the Hubble expansion parameter and angular diameter distance at 1.88<z<3.52 by using the spatial distribution of more than a million Ly{alpha}-emitting galaxies over a total target area of 540deg^2^. The catalog comes from contiguous fiber spectra coverage of 25deg^2^ of sky from 2017 January through 2020 June, where object detection is performed through two complementary detection methods: one designed to search for line emission and the other a search for continuum emission.

The HETDEX public release catalog is dominated by emission-line galaxies and includes 51863 Ly{alpha}-emitting galaxy (LAE) identifications and 123,891 [OII]-emitting galaxies at z<0.5. Also included in the catalog are 37916 stars, 5274 low-redshift (z<0.5) galaxies without emission lines, and 4976 active galactic nuclei. The catalog provides sky coordinates, redshifts, line identifications, classification information, line fluxes, [OII] and Ly{alpha} line luminosities where applicable, and spectra for all identified sources processed by the HETDEX detection pipeline.