Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions.¶
Rubin, V. C., & Ford, W. K. J. (1970). Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions. The Astrophysical Journal, 159, 379-403.
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1 citation across 1 artifact.
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Primes¶
- Calibration Anomaly
- In astrophysics the model is Newtonian dynamics applied to a galaxy's visible mass; its prediction is that orbital velocities should fall with distance from the centre; the observation is that rotation curves stay flat far out — a factor-of-several discrepancy that survived improved measurement and persisted across many galaxies, ruling out measurement error and historically forcing a category-level response (dark matter or modified dynamics) rather than a parameter tweak.
This sourceFlat galaxy rotation curves diverging from Newtonian prediction, historically motivating dark matter.
- In astrophysics the model is Newtonian dynamics applied to a galaxy's visible mass; its prediction is that orbital velocities should fall with distance from the centre; the observation is that rotation curves stay flat far out — a factor-of-several discrepancy that survived improved measurement and persisted across many galaxies, ruling out measurement error and historically forcing a category-level response (dark matter or modified dynamics) rather than a parameter tweak.
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Registry ID ref:1605cafc3fc6 · see in the full table