Abstract
The characteristic μ angles for the spirals of 6 multi-arm galaxies (NGC 1232, 5247, 4303, 4321, 3938, 3184) have been determined. It has been found that they vary along spiral arms within a rather large interval, with mean square deviations ranging from 4° to 20°. The mean μ for each arm deviates in a relatively small degree from the mean μ of the whole galaxy.
The authors apply the normal logarithmic spiral model in estimating the number of arms in our Galaxy. On the basis of this model the number of spiral arms for the above galaxies have been determined and compared with the actual number. It is shown that the normal logarithmic spiral model is unsuitable for our purposes. The number of spiral arms calculated in this way is not reliable.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1970 I.A.U.
About this chapter
Cite this chapter
Dzigvashvili, R.M., Borchkhadze, T.M. (1970). Applying the Model of a Normal Logarithmic Spiral to Galaxies. In: Becker, W., Contopoulos, G. (eds) The Spiral Structure of Our Galaxy. International Astronomical Union / Union Astronomique Internationale, vol 38. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3275-9_7
Download citation
DOI: https://doi.org/10.1007/978-94-010-3275-9_7
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-3277-3
Online ISBN: 978-94-010-3275-9
eBook Packages: Springer Book Archive