THE ORIENTATIONS OF GALAXY GROUPS AND FORMATION OF THE LOCAL SUPERCLUSTER
Journal Article
·
· Astrophysical Journal
- Uniwersytet Opolski, Institute of Physics, ul. Oleska 48, 45-052 Opole (Poland)
- Jan Kochanowski University, Institute of Physics, ul. Swietokrzyska 15, 25-406 Kielce (Poland)
We analyzed the orientation of galaxy groups in the Local Supercluster (LSC). It is strongly correlated with the distribution of neighboring groups in the scale up to about 20 Mpc. The group major axis is in alignment with both the line joining the two brightest galaxies and the direction toward the center of the LSC, i.e., Virgo cluster. These correlations suggest that two brightest galaxies were formed in filaments of matter directed toward the protosupercluster center. Afterward, the hierarchical clustering leads to aggregation of galaxies around these two galaxies. The groups are formed on the same or similarly oriented filaments. This picture is in agreement with the predictions of numerical simulations.
- OSTI ID:
- 21392431
- Journal Information:
- Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 708; ISSN ASJOAB; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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