Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pasj...44..493k&link_type=abstract
PASJ: Publications of the Astronomical Society of Japan (ISSN 0004-6264), vol. 44, no. 5, p. 493-507.
Astronomy and Astrophysics
Astronomy
44
Galactic Clusters, Galactic Evolution, Local Group (Astronomy), Spatial Distribution, Anisotropy, Astronomical Photometry, Galactic Structure
Scientific paper
The alignment of the spin vectors of galaxies in the Local Supercluster (LSC) was examined using a sample of galaxies with a homogeneous surface photometry data base. The spatial distribution of the spin vectors for 618 spirals and lenticulars with cz not larger than 3000 km/s could be expressed by three different histograms, by which the deviation from isotropy was investigated on the basis of the chi-squares test. It was found that the total sample was isotropic, but some of the 13 subsamples into which the total sample was divided on the bases of the LSC structure and intrinsic properties of galaxies were anisotropic. The cause of this anisotropy was found to be the tendency of the galaxies near the LSC plane to have their spin vectors aligned parallel to the LSC plane, while galaxies that were off the LSC plane aligned perpendicular to the LSC plane.
Kashikawa Nobunari
Okamura Sadanori
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