Cosmicflows-4: The Catalog of ∼10,000 Tully–Fisher Distances

We present the distances of 9792 spiral galaxies lying within 15,000 km sâ»Â¹ using the relation between luminosity and rotation rate of spiral galaxies. The sample is dominantly, but not exclusively, drawn from galaxies detected in the course of the ALFALFA H I survey with the Arecibo Telescope. Relations between H I line widths and luminosity are calibrated at SDSS u, g, r, i, z bands and WISE W1 and W2 bands. By exploiting secondary parameters, particularly color indices, we address discrepancies between measured distances at different wave bands with unprecedented detail. We provide a catalog that includes reduced kinematic, photometric, and inclination parameters. We also describe a machine-learning algorithm, based on the random forest technique, that predicts the dust attenuation in spirals lacking infrared photometry. We determine a Hubble Constant value of Hâ‚€ = 75.1 ± 0.2(stat.), with potential systematics up to ±3 km sâ»Â¹ Mpcâ»Â¹. ; © 2020 The American Astronomical Society. Received 2020 July 10; revised 2020 August 27; accepted 2020 September 1; published 2020 October 23. We are pleased to acknowledge the citizen participation to scientific research of undergraduate students at University of Hawaii, members of the amateur astronomy clubs France Planétarium de Vaulx-en-Velin, Association Clair d'étoiles et Brin d'jardin, Société astronomique de Lyon, Club d'astronomie Lyon Ampère, Club d'astronomie des monts du lyonnais, and Club d'astronomie de Dijon, as well as friends who helped us with measuring inclinations of spiral galaxies in our sample. Support for E. K. and R. B. T. was provided by the NASA Astrophysics Data Analysis Program through grant number 88NSSC18K0424. A. D. acknowledges financial support from the Project IDEXLYON at the University of Lyon under the Investments for the Future Program (ANR-16-IDEX-0005). H. C. acknowledges support from Institut Universitaire de France. This project is partly financially supported by Region Rhone-Alpes-Auvergne. This research has made use of ...