The Properties of Nearby Galaxy Structures
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Дата
2009
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Анотація
We constructed the statistically uniform catalogue of 6188 galaxy
structures, having at least 10 members in the structure field. These structures
were extracted through the application of the Voronoi tessellation to Muenster
Red Sky Survey which is a catalogue of galaxies based on scans of 217 ESO
plates in the region covering about 5000 square degrees. We found that the
shape of structures projected on the celestial sphere is different for rich and
poor structures, which can reflect condition during their formation. Recent
(for z < 0.18) weak dynamical evolution of galaxy clusters is observed. The
distributions of position angles of ten brightest galaxies in structure are isotropic.
The position angle of the brightest cluster member tend to be align with the
parent cluster major axis only in the case of BM type I clusters, this is clusters
containing cD galaxy.
Опис
Ключові слова
Properties, Nearby, Galaxy Structures
Бібліографічний опис
Cosmology Across Cultures ASP Conference Series, Vol. 409, proceedings of the conference held 8-12 September, 2008, at Parque de las Ciencias, Granada, Spain. Edited by José Alberto Rubiño-Martín, Juan Antonio Belmonte, Francisco Prada, and Antxon Alberdi. San Francisco: Astronomical Society of the Pacific, 2009.