Hubble diagram


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Related to Hubble diagram: Hubble's constant, Hubble's law, Hubble expansion
Hubble diagram compiled for several kinds of galaxiesclick for a larger image
Hubble diagram compiled for several kinds of galaxies

Hubble diagram

A plot of the redshift of galaxies against their distance (see illustration) or of redshift against apparent magnitude. Apparent magnitude is a crude measure of galactic distance, the value for the brightest or the third or tenth brightest member of a cluster of galaxies commonly being used. See Hubble constant; Hubble's law.

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Key Words: Hertzsprung-Russell diagram, Hubble diagram, standard candle, main sequence, luminosity
Why would the existence of a cosmological constant make the curve in a Hubble diagram bend farther to the right?