2008/09/18 by Łukasz Bratek, Joanna Jałocha, M. Kutschera +1
Physics and Astronomy · #Angular velocity #Astrophysics #Classical mechanics #Cosmology and Gravitation Theories #Disc galaxy #Elliptical galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy formation and evolution #Galaxy rotation curve #Geometry #Mass distribution #Mechanics #Physics #Rotation (mathematics) #Rotational symmetry #Scientific Research and Discoveries #Spiral galaxy #Thick disk #Thin disk #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2008.13978.x
published as Mon.Not.Roy.Astron.Soc. 391 (2008) 1373-1383 · Accepted for publication in MNRAS, 12 pages, 26 figures
arxiv created 2008/09/18 · openalex publication_date 2008/11/11 · arxiv updated 2011/11/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Non-monotonic features of rotation curves, and also the related gravitational effects typical of thin discs – like backward-reaction or amplification of rotation by negative surface density gradients – which are characteristic imprints of disc-like mass distributions, are discussed in the axisymmetric thin disc model. The influence of the data cut-off in rotational velocity measurements on the determination of the mass distribution in flattened galaxies is studied. It has also been found that the baryonic matter distribution in the spiral galaxy NGC 5475, obtained in the axisymmetric thin disc approximation, accounts for the rotation curve of the galaxy. To obtain these results, the iteration method developed recently by the authors has been applied.