Chiral Property of Spiral and Barred Spiral Galaxies in the Local Supercluster

Details Chiral Property of Spiral and Barred Spiral Galaxies in the Local Supercluster Chiral Property of Spiral and Barred Spiral Galaxies in the Local Supercluster

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap%26ss.307..369a&link_type=abstract

Astrophysics and Space Science, Volume 307, Issue 4, pp.369-383

Astronomy and Astrophysics

Astrophysics

1

Spiral Galaxies, Hubble Sequence, Chirality, Clusters: Individual (Local Supercluster)

Scientific paper

We present an analysis of the chiral property of 667 spiral and barred spiral galaxies in the Local Supercluster (radial velocity <3 000 km s-1). The arms of a galaxy (spiral or barred spiral) can be distinguished according to their orientation (leading or trailing) relative to the direction of the rotation. We use environment of each galaxy as a subsample in order to study the chiral property of galaxies. In addition, equatorial position angle distributions of leading and trailing arm galaxies are studied. We classify our database according as their morphology, diameters, radial velocities, axial ratios and magnitudes. The distribution of trailing and leading arm galaxies in the Local Supercluster is found homogeneous. A significant dominance of either trailing or leading structures is noticed within the Virgo cluster region, suggesting that the aggregation of these structures might have already started there. The rotation axes of the galaxies in the Virgo cluster is found to lie in the equatorial plane. Chirality of galaxies is found strong for the subsamples that showed a random alignment in the equatorial position angle distribution. Possible explanations of the results will be presented.

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