The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints

@article{Pesce2020TheMC,
  title={The Megamaser Cosmology Project. XIII. Combined Hubble Constant Constraints},
  author={Dominic W. Pesce and James A. Braatz and Mark J. Reid and Adam G. Riess and Dan Scolnic and James J. Condon and Feng Gao and Christian Henkel and C. M. Violette Impellizzeri and C. Y. Kuo and Kuang Yao Lo},
  journal={The Astrophysical Journal Letters},
  year={2020},
  volume={891}
}
We present a measurement of the Hubble constant made using geometric distance measurements to megamaser-hosting galaxies. We have applied an improved approach for fitting maser data and obtained better distance estimates for four galaxies previously published by the Megamaser Cosmology Project: UGC 3789, NGC 6264, NGC 6323, and NGC 5765b. Combining these updated distance measurements with those for the maser galaxies CGCG 074-064 and NGC 4258, and assuming a fixed velocity uncertainty of 250 km… 

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