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Spiral structure in external galaxies
Published online by Cambridge University Press: 14 August 2015
Abstract
The need for observing at least four different categories of optical objects for a satisfactory definition of optical spiral structure is emphasized. A sequence of optical form-types for the description of spiral structure is outlined. A pronounced difference in the nature of the spiral structure of the outer and inner parts of Messier 33 is illustrated. Striking local differences between spiral arms defined by differing criteria are noted.
- Type
- Part I/Spiral Structure in Galaxies
- Information
- Symposium - International Astronomical Union , Volume 38: The Spiral Structure of our Galaxy , 1970 , pp. 9 - 14
- Copyright
- Copyright © Reidel 1970
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