Different studies of the global pitch angle of the Milky Way's spiral arms

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1093/mnras/stv862
AuthorSearch for: 1
Name affiliation
  1. National Research Council of Canada. National Science Infrastructure
FormatText, Article
Subjectmethods: statistical; ISM: general; ISM: structure; Galaxy: disc; Galaxy:structure; galaxies: spiral
Abstract
There are many published values for the pitch angle of individual spiral arms, and their wide distribution (from -3° to -28°) begs for various attempts for a single value. Each of four statistical methods used here yields a mean pitch angle in a small range, between -12° and -14° (Table 7, Fig. 2). The final result of our meta-analysis yields a mean global pitch angle in the Milky Way's spiral arms of -13.1° ± 0.6°.
Publication date
In
  • Monthly Notices of the Royal Astronomical Society 450, no. 4 (21 May 2015): 4277–4284.
LanguageEnglish
Peer reviewedYes
NPARC number21276958
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