2001/01/23 by Kenneth F. Nicholson, Nicholson, Kenneth F. · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Scientific Research and Discoveries #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0101401
5 pages, 5 figures, PDF
arxiv created 2001/01/23 · openalex publication_date 2001/01/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Extreme speed profiles, that are impossible to anayze correctly using the usual methods, are shown to be easily handled using the methods developed previously by Nicholson (astro-ph/0006330). These profiles are constant orbital speeds with sharp and smooth ramps at the origin, and constant angular velocity with speeds increasing linearly to the galaxy rim. Also an example using measured data for a real galaxy is shown for NGC 3198. A new format is presented to show results in dimensionless form, that includes a way to show SMD results so they are easily compared. Based on repeated trials for accuracy, the rod representing the mass of a fundamental segment is now placed at 0.575*dr at the center ring of a galaxy.