A Relation between Distance and Radial Velocity among Extra-galactic Nebulae.

@article{HubbleARB,
  title={A Relation between Distance and Radial Velocity among Extra-galactic Nebulae.},
  author={E Hubble},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={15 3},
  pages={168-73}
}
  • E Hubble
  • Published in
    Proceedings of the National Academy of Sciences…
appearance the spectrum is very much like spectra of the Milky Way clouds in Sagittarius and Cygnus, and is also similar to spectra of binary stars of the W Ursae Majoris type, where the widening and depth of the lines are affected by the rapid rotation of the stars involved. The wide shallow absorption lines observed in the spectrum of N. G. C. 7619 have been noticed in the spectra of other extra-galactic nebulae, and may be due to a dispersion in velocity and a blending of the spectral types… CONTINUE READING
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