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Bidimensional Fourier Analysis of a OSUBSGS Spiral Galaxies Sample

Published online by Cambridge University Press:  01 August 2006

Ivânio Puerari ,
Margarita Valdez-Gutiérrez  and
Izbeth Hernández-López
Ivânio Puerari
Affiliation:
INAOE, Mexico
Margarita Valdez-Gutiérrez
Affiliation:
Instituto de Astronomía—Universidad Nacional Autónoma de México, campus Ensenada, B. C., Mexico
Izbeth Hernández-López
Affiliation:
INAOE, Mexico
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Abstract

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By using bidimensional Fourier techniques, we have analyzed H (1.6μm) images of a sample of 48 spiral galaxies taken from the OSUBSGS. We found that two-armed spirals (m = 2) are the more important structures in the sample, but some galaxies present higher m = 1 (lopsided) or m = 3 (three armed spirals). A weak correlation between m = 2 pitch angles and Eskridge et al. (2002) classification is also evident, but there is no correlation at all between those angles and RC3 classification or Elmegreen arm class.

References

References:

de Vaucouleurs, 1991, Third Reference Catalogue of Bright Galaxies (RC3), New York: Springer; Elmegreen, D.M., Elmegreen, B.G. 1987, ApJ 314, 3; Eskridge, P.B., et al. 2002, ApJS 143, 73Google Scholar