Quantifying Bar Strength: Morphology Meets Methodology

Details Quantifying Bar Strength: Morphology Meets Methodology Quantifying Bar Strength: Morphology Meets Methodology

2004-06-22

arxiv.org/abs/astro-ph/0406494v1

Astronomy and Astrophysics

Astrophysics

LaTeX with Kluwer style file, 5 pages with 3 embedded figures. edited by Block, D.L., Freeman, K.C., Puerari, I., & Groess, R

Scientific paper

A set of objective bar-classification methods have been applied to the Ohio State Bright Spiral Galaxy Survey (Eskridge et al. 2002). Bivariate comparisons between methods show that all methods agree in a statistical sense. Thus the distribution of bar strengths in a sample of galaxies can be robustly determined. There are very substantial outliers in all bivariate comparisons. Examination of the outliers reveals that the scatter in the bivariate comparisons correlates with galaxy morphology. Thus multiple measures of bar strength provide a means of studying the range of physical properties of galaxy bars in an objective statistical sense.

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