The Spitzer Spectroscopic Data Fusion—Merged Spectroscopic Redshift Catalogs in Spitzer Fields

Abstract I present the Spitzer Spectroscopic Data Fusion, a collection of merged spectroscopic redshift catalogs covering fourteen of the most widely studied extragalactic survey fields. Building on the Spitzer Data Fusion multi-wavelength photometric database, the collection merges several publicly available spectroscopic redshift catalogs within each field using a 1 ″   matching radius, delivers a single “best” redshift per source together with provenance and overlap flags, and is available on Zenodo as doi: 10.5281/zenodo.6368347 . The dataset is regularly updated as new spectroscopic surveys are published. It is intended as a community calibration resource for photometric redshift training, spectral energy distribution fitting, and multi-wavelength cross-identification studies.