hubble {RbyExample}

Hubble Space Telescope Data

Description

Distances and velocities measured for 24 galaxies containing Cepheid stars to measure the Hubble constant.

Usage

hubble

Format

24 obs. of 3 variables:

Galaxy

A label to identify the galaxy (a factor)

Velocity

Relative velocity in kilometers per second

Distance

Distance in Mega parsecs

Source

Freedman et al. 2001. The Astrophysical Journal 553:47-72: Tables 4 and 5.

References

Freedman et al. (2001) Final results from the Hubble space telescope key project to measure the Hubble constant. The Astrophysical Journal (553), 47-72. Wood, S.N. (2017) Generalized Additive Models: An Introduction with R. CRC