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Optical Spectrum of a Galaxy

Optical Spectrum of a Galaxy. H a. Recession velocity = 14387 km / s z = 0.0479. Flux. H b. [O III]. Vesto Slipher. Redshifted Spectra. Edwin Hubble. The Original Hubble Law. Modern-Day Hubble Law. Today our best value for the Hubble constant is 70 +/- 5 km / s / Mpc.

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Optical Spectrum of a Galaxy

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  1. Optical Spectrum of a Galaxy Ha Recession velocity = 14387 km / s z = 0.0479 Flux Hb [O III]

  2. Vesto Slipher

  3. Redshifted Spectra

  4. Edwin Hubble

  5. The Original Hubble Law

  6. Modern-Day Hubble Law Today our best value for the Hubble constant is 70 +/- 5 km / s / Mpc.

  7. Balloon Analogy

  8. Raisin-Bread Analogy

  9. Measuring the Ages of the OldestObjects in the Universe Color-Magnitude Diagram for a Globular Cluster The age of the Universe is thought to be 13.7 Gyr. The oldest globular clusters are about 12.6 Gyr old. So things seem consistent!

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