Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant

@article{Riess2018MilkyWC,
  title={Milky Way Cepheid Standards for Measuring Cosmic Distances and Application to Gaia DR2: Implications for the Hubble Constant},
  author={A. Riess and S. Casertano and W. Yuan and L. Macri and B. Bucciarelli and M. Lattanzi and J. Mackenty and J. Bowers and W. Zheng and A. Filippenko and C. Huang and R. Anderson},
  journal={The Astrophysical Journal},
  year={2018},
  volume={861},
  pages={126}
}
  • A. Riess, S. Casertano, +9 authors R. Anderson
  • Published 2018
  • Physics
  • The Astrophysical Journal
  • We present HST photometry of a selected sample of 50 long-period, low-extinction Milky Way Cepheids measured on the same WFC3 F555W, F814W, and F160W-band photometric system as extragalactic Cepheids in SN Ia hosts. These bright Cepheids were observed with the WFC3 spatial scanning mode in the optical and near-infrared to mitigate saturation and reduce pixel-to-pixel calibration errors to reach a mean photometric error of 5 millimags per observation. We use the new Gaia DR2 parallaxes and HST… CONTINUE READING
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