1. The document presents a study of rotational asymmetry in galaxies for both morphological and physical diagnostic purposes. It introduces two measures of asymmetry: A1, the existing measure, and A3, an alternative measure proposed using Spearman's correlation coefficient. 2. Methods describe existing measures of concentration, asymmetry, smoothness, and other morphological parameters. It then provides the equations for measuring A1 and introduces A3. 3. Results show correlations between A3 and concentration, and histograms comparing A1 and A3 in distinguishing galaxy types using a sample from existing galaxy catalogs. A3 proved more effective than A1 at distinguishing classes.

1. Morphometry of Galaxies: Asymmetry
Juliana P. Cougo1, Fabricio Ferrari2
1Universidade Federal de Santa Maria-UFSM, Brazil; 2Universidade Federal do Rio Grande-FURG, Brazil.
Objectives
1. To present a detailed study of rotational asymmetry in galaxies for both morphological and
physical diagnostic purposes.
2. To present an alternative measure for the asymmetry of galaxies, in comparison with the existing
measure A1.
Introduction
I The quantitative use of asymmetry as a morphological parameter was used