• Physics
  • Published 2003

The extragalactic distance scale

@inproceedings{Jensen2003TheED,
  title={The extragalactic distance scale},
  author={Joseph B. Jensen and John L. Tonry and John P. Blakeslee},
  year={2003}
}
Significant progress has been made during the last 10 years toward resolving the debate over the expansion rate of the Universe. The current value of the Hubble parameter, Ho, is now arguably known with an accuracy of 10%, largely due to the tremendous increase in the number of galaxies in which Cepheid variable stars have been discovered. Increasingly accurate secondary distance indicators, many calibrated using Cepheids, now provide largely concordant measurements of Ho well out into the… CONTINUE READING

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