A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team

  title={A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km s−1 Mpc−1 Uncertainty from the Hubble Space Telescope and the SH0ES Team},
  author={Adam G. Riess and Wenlong Yuan and Lucas M. Macri and Daniel M. Scolnic and Dillon J. Brout and Stefano Casertano and David O. Jones and Yukei S. Murakami and Gagandeep S. Anand and Louise Breuval and Thomas G. Brink and Alexei V. Filippenko and Samantha L. Hoffmann and Saurabh W. Jha and W. D’arcy Kenworthy and John W. MacKenty and Benjamin E. Stahl and Wei Zheng},
  journal={The Astrophysical Journal Letters},
We report observations from the Hubble Space Telescope (HST) of Cepheid variables in the host galaxies of 42 Type Ia supernovae (SNe Ia) used to calibrate the Hubble constant (H 0). These include the complete sample of all suitable SNe Ia discovered in the last four decades at redshift z ≤ 0.01, collected and calibrated from ≥1000 HST orbits, more than doubling the sample whose size limits the precision of the direct determination of H 0. The Cepheids are calibrated geometrically from Gaia EDR3… 

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