Journal of Physical Studies 16(4), Article 4901 [15 pages] (2012)
DOI: https://doi.org/10.30970/jps.16.4901

SOME ASPECTS OF THE ORIENTATION OF GALAXIES IN CLUSTERS

P. Pajowska{1}, W. Godłowski{2}, E. Panko{3}, P. Flin{4}

{1}Uniwersytet Opolski, Institute of Physics, ul. Oleska, 48,
45-052 Opole, Poland, e-mail: paoletta@interia.pl,
{2}Uniwersytet Opolski, Institute of Physics,
ul. Oleska, 48, 45-052 Opole, Poland, e-mail: godlowski@uni.opole.pl,
{3}Kalinenkov Astronomical Observatory, Mykolayiv National University,
Nikolska, 24, Mykolayiv, Ukraine, email: tajgeta@sp.mk.ua
{4}Jan Kochanowski University, Institute of Physics,
ul. Swi\k{e}tokrzyska, 15, 406 Kielce, Poland, e-mail: sfflin@cyf-kr.edu.pl,

The analysis of Tully's groups of galaxies belonging to the Local Supercluster (LSC) was performed. In the 1975 Hawley and Peebles [D. I. Hawley, P. J. E. Peebles, Astron. J. {\rm 80}, 477 (1975)] presented the method for investigations of the galaxies orientation in the large structures. In our previous papers [W. God{\l}owski, P. Piwowarska, E. Panko, P. Flin, Astron. J. {\bf 723}, 985 (2010); W. God{\l}owski, Astrophys. J. {\bf 747}, 7 (2012)] the statistical test proposed by Hawley and Peebles for the investigation of this problem was analyzed in detail and some improvements were suggested. On this basis the new method of the analysis of galactic alignment in clusters was proposed. Using this method, God{\l}owski [W. God{\l}owski, Acta Phys. Polon. B {\bf 42}, 2323 (2011)] analyzed the orientation of galaxies inside Tully's groups founding no significant deviations from isotropy both in orientation of position angles and $δ_D$ and $η$ angles as well, giving the spatial orientation of galaxy planes. In the present paper we examined carefully and methodically the dependence of alignment in Tully's groups on the morphological type of galaxies. Moreover, we discussed the consequences of different approximation of ‟true shape” of the galaxies for different morphological types, a possible influence of this problem for the investigation of spatial orientation of galaxies. In addition, we discussed the implications of the obtained results for the theory of galaxy formation as well.

PACS number(s): 98.65.-r, 98.62.Ai

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