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Welcome to Data Release DR1.1 of the COSMOS Spectroscopic Redshift Compilation. We refer users to Khostovan et al. (2025), which has been accepted for publication in ApJS, for details on how the compilation is designed. In total, there are now 138 individual programs comprising the full compilation with 482579 redshifts for 261975 galaxies.
This new data release is almost 3 times larger than DR1.0 and also covers 10 deg^2 (5 times larger than DR1.0) to prepare for future, wide-area next-generation surveys that will also target COSMOS. Also included in this data release is a new juypter notebook that demonstrates how one could make 3D visualizations of large-scale structure as shown in the compilation paper on ApJS.