A 2.4% DETERMINATION OF THE LOCAL VALUE OF THE HUBBLE CONSTANT

@article{Riess2016A2D,
  title={A 2.4\% DETERMINATION OF THE LOCAL VALUE OF THE HUBBLE CONSTANT},
  author={Adam G. Riess and Lucas M. Macri and Samantha L. Hoffmann and Dan Scolnic and Stefano Casertano and Alexei V. Filippenko and Brad E. Tucker and Mark J. Reid and David O. Jones and Jeffrey M. Silverman and Ryan Chornock and Peter J. Challis and Wenlong Yuan and Peter. J. Brown and Ryan J. Foley},
  journal={The Astrophysical Journal},
  year={2016},
  volume={826}
}
We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant from 3.3% to 2.4%. The bulk of this improvement comes from new near-infrared (NIR) observations of Cepheid variables in 11 host galaxies of recent type Ia supernovae (SNe Ia), more than doubling the sample of reliable SNe Ia having a Cepheid-calibrated distance to a total of 19; these in turn leverage the magnitude-redshift relation based on ∼300 SNe Ia… 

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