The Symmetry, Color, and Morphology of Galaxies

Preprint

22 October 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/9710234

Abstract

The structural symmetry of forty-three face-on galaxy images in the R(65 0 nm) and J(450 nm) bands are measured to determine the usefulness of symmetry a s a morphological parameter. Each galaxy image is rotated by $180$\deg and subtr acted from the original to obtain a quantitative value for its structural symmet ry. The symmetry numbers computed for the sample are then compared with RC3 mor phological types, color \& absolute blue magnitudes. A strong correlation betw een color and symmetry is found, and the RC3 Hubble sequence is found to be one of increasing asymmetry. The use of symmetry as a morphological parameter, and the possible causes of the asymmetries are discussed.

Keywords

All Related Versions

Version 1, 1997-10-22, ArXiv
Published version: Publications of the Astronomical Society of the Pacific, 109, 1251.

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