2011/09/30 by Eric E. Martínez-García
Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Scientific Research and Discoveries #astro-ph.CO #astro-ph.GA
paper · pdf · doi:10.1088/0004-637x/744/2/92
Accepted for publication in ApJ
arxiv created 2011/10/14 · openalex publication_date 2011/12/19 · arxiv updated 2015/05/29 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/01
According to one version of the recently proposed "manifold" theory that explains the origin of spirals and rings in relation to chaotic orbits, galaxies with stronger bars should have a higher spiral arms pitch angle when compared to galaxies with weaker bars. A subsample of barred-spiral galaxies in the Ohio State University Bright Galaxy Survey was used to analyze the spiral arms pitch angle. These were compared with bar strengths taken from the literature. It was found that the galaxies in which the spiral arms maintain a logarithmic shape for more than 70° seem to corroborate the predicted trend.