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Kondepudi DK, Durand DJ. Chiral asymmetry in spiral galaxies?. Chirality. 2001;13(7):351-6doi: 10.1002/chir.1044.
Kondepudi, D. K., & Durand, D. J. (2001). Chiral asymmetry in spiral galaxies?. Chirality, 13(7), 351-6. https://doi.org/10.1002/chir.1044
Kondepudi, D K, and Durand, D J. "Chiral asymmetry in spiral galaxies?." Chirality vol. 13,7 (2001): 351-6. doi: https://doi.org/10.1002/chir.1044
Kondepudi DK, Durand DJ. Chiral asymmetry in spiral galaxies?. Chirality. 2001 Jul;13(7):351-6. doi: 10.1002/chir.1044. PMID: 11400188.
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Chirality. 2001 Jul;13(7):351-6. doi: 10.1002/chir.1044.

Chiral asymmetry in spiral galaxies?.

Chirality

D K Kondepudi, D J Durand

Affiliations

  1. Department of Chemistry, Wake Forest University, Winston-Salem, North Carolina, USA. [email protected]

PMID: 11400188 DOI: 10.1002/chir.1044

Abstract

Spiral galaxies are chiral entities when coupled with the direction of their recession velocity. As viewed from the Earth, the S-shaped and Z-shaped spiral galaxies are two chiral forms. What is the nature of chiral symmetry in spiral galaxies? In the Carnegie Atlas of Galaxies that lists photographs of a total of 1,168 galaxies, we found 540 galaxies, classified as normal or barred spirals, that are clearly identifiable as S- or Z- type. The recession velocities for 538 of these galaxies could be obtained from this atlas and other sources. A statistical analysis of this sample reveals no overall asymmetry but there is a significant asymmetry in certain subclasses: dominance of S-type galaxies in the Sb class of normal spiral galaxies and a dominance of Z-type in the SBb class of barred spiral galaxies. Both S- and Z-type galaxies seem to have similar velocity distribution, indicating no spatial segregation of the two chiral forms.

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