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physics.hist-ph2013
Keepers of the Double Stars
Joseph S. Tenn
Astronomers have long tracked double stars in efforts to find those that are gravitationally-bound binaries and then to determine their orbits. Early catalogues by the Herschels, S…
physics.hist-ph2013
What Else Did V. M. Slipher Do?
Joseph S. Tenn
When V. M. Slipher gave the 1933 George Darwin lecture to the Royal Astronomical Society, it was natural that he spoke on spectrographic studies of planets. Less than one-sixth of…