Astrophysics and Space Science

, Volume 5, Issue 4, pp 438–443 | Cite as

The ratio of total to selective absorption in the galaxy

  • J. G. Ireland
  • K. Nandy


Values for the ratio of total to selective absorption are estimated from optical measurements on Cepheids, their radial velocities, and an assumed rotational velocity model of the Galaxy. It is shown that there is no systematic variation ofR with galactic longitude on the basis of these measurements.


Radial Velocity Systematic Variation Rotational Velocity Velocity Model Optical Measurement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© D. Reidel Publishing Company 1969

Authors and Affiliations

  • J. G. Ireland
    • 1
  • K. Nandy
    • 1
  1. 1.Royal ObservatoryEdinburghScotland

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