Some observational aspects of the orientation of galaxies

TL;DR

This study examined the orientations of galaxies within Tully groups, finding no significant deviation from random distribution, and discussed how assumptions about galaxy shapes can influence such analyses.

Contribution

It provides observational analysis of galaxy orientations in groups and explores how shape assumptions affect the interpretation of spatial orientations.

Findings

No significant deviation from isotropy in galaxy orientations

Influence of shape approximation on orientation analysis

Implications for galaxy formation theories

Abstract

We investigated the sample of galaxies belonging to the Tully groups of galaxies. We analyzed the orientation of galaxies inside the group. We did not found significant deviation from isotropy both in orientation of position angles and angles $\delta_D$ and $\eta$ giving the spatial orientation of galaxy planes. Moreover we analyzed consequences of different approximation of "true shape" of galaxies and showed possible influence of this problem for investigation of spatial orientation of galaxies. Implications of the obtained results for theory of galaxy formation was discussed as well.