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We present a new catalogue of distances and peculiar velocities (PVs) of$34,059$ early-type galaxies derived from Fundamental Plane (FP) measurementsusing data from the Sloan Digital Sky Survey (SDSS). This$7016\,\mathrm{deg}^{2}$ homogeneous sample comprises the largest set ofpeculiar velocities produced to date and extends the reach of PV surveys up toa redshift limit of $z=0.1$. Our SDSS-based FP distance measurements have amean uncertainty of 23%. Alongside the data, we produce an ensemble of 2,048mock galaxy catalogues that reproduce the data selection function, and are usedto validate our fitting pipelines and check for systematic errors. We uncover asignificant trend between group richness and mean surface brightness within thesample, which may hint at an environmental dependence within the FP or thepresence of unresolved systematics, and can result in biased peculiarvelocities. This is removed using multiple FP fits as function of grouprichness, a procedure made tractable through a new analytic derivation for theintegral of a 3D Gaussian over non-trivial limits. Our catalogue is calibratedto the zero-point of the CosmicFlows-III sample with an uncertainty of $0.004$dex (not including cosmic variance or the error within CosmicFlows-III itself),which is validated using independent cross-checks with the predicted zero-pointfrom the 2M++ reconstruction of our local velocity field. Finally, as anexample of what is possible with our new catalogue, we obtain preliminary bulkflow measurements up to a depth of $135\,h^{-1}\mathrm{Mpc}$. We find aslightly larger-than-expected bulk flow at high redshift, although this couldbe caused by the presence of the Shapley supercluster which lies outside theSDSS PV footprint.

The Sloan Digital Sky Survey Peculiar Velocity Catalogue