The Hubble Constant

@article{Freedman2010TheHC,
  title={The Hubble Constant},
  author={Wendy L. Freedman and Barry F. Madore},
  journal={Annual Review of Astronomy and Astrophysics},
  year={2010},
  volume={48},
  pages={673-710}
}
Considerable progress has been made in determining the Hubble constant over the past two decades. We discuss the cosmological context and importance of an accurate measurement of the Hubble constant, focusing on six high-precision distance-determination methods: Cepheids, tip of the red giant branch, maser galaxies, surface brightness fluctuations, the Tully-Fisher relation, and Type Ia supernovae. We discuss in detail known systematic errors in the measurement of galaxy distances and how to… 

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References

SHOWING 1-10 OF 228 REFERENCES

The Hubble Constant

I review the current state of determinations of the Hubble constant, which gives the length scale of the Universe by relating the expansion velocity of objects to their distance. In the last 20

Steps toward the Hubble constant. VIII - The global value

The problem of determining the global Hubble constant is approached by using two distance indicators whose dispersion in absolute magnitude is small, and hence which are virtually free of the

The expansion field: the value of H0

Any calibration of the present value of the Hubble constant (H0) requires recession velocities and distances of galaxies. While the conversion of observed velocities into true recession velocities

The Hubble Constant

TLDR
The Hubble constant is the constant of proportionality between recession velocity and distance in the expanding universe and development of new techniques for the measurements of galaxy distances remains.

Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant

We present here the final results of the Hubble Space Telescope (HST) Key Project to measure the Hubble constant. We summarize our method, the results, and the uncertainties, tabulate our revised

Type Ia supernovae and the Hubble constant

▪ Abstract The focus of this review is the work that has been done during the 1990s on using Type Ia supernovae (SNe Ia) to measure the Hubble constant (H0). SNe Ia are well suited for measuring H0.

A REDETERMINATION OF THE HUBBLE CONSTANT WITH THE HUBBLE SPACE TELESCOPE FROM A DIFFERENTIAL DISTANCE LADDER

This is the second of two papers reporting results from a program to determine the Hubble constant to ∼5% precision from a refurbished distance ladder based on extensive use of differential

THE CEPHEID DISTANCE SCALE

classical Cepheids are discussed with particular emphasis on the fact that Cepheids continue to provide the most homogeneous and reliable set of distances to many nearby galaxies. Observational

The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. XXIV. The Calibration of Tully-Fisher Relations and the Value of the Hubble Constant

This paper presents the calibration of BVRIH-0.5 Tully-Fisher relations based on Cepheid distances to 21 galaxies within 25 Mpc and 23 clusters within 10,000 km s-1. These relations have been applied

Modern Cosmology

The last five years have seen the coming of age of Modern Cosmology, a mature branch of science based on the Big Bang theory and the Inflationary Paradigm. In particular, we can now define rather
...