Discovery of a large-scale wall in the direction of Abell 22
Contribuinte(s) |
A. C. Fabian |
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Data(s) |
01/02/2005
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Resumo |
We report on the discovery of a large-scale wall in the direction of Abell 22. Using photometric and spectroscopic data from the Las Campanas Observatory and Anglo-Australian Telescope Rich Cluster Survey, Abell 22 is found to exhibit a highly unusual and striking redshift distribution. We show, by examining the galaxy distributions both in redshift space and on the colour-magnitude plane, that Abell 22 exhibits a foreground wall-like structure. A search for other galaxies and clusters in the nearby region using the 2dF Galaxy Redshift Survey data base suggests that the wall-like structure is a significant large-scale, non-virialized filament which runs between two other Abell clusters either side of Abell 22. The filament stretches over at least > 40 h(-1) Mpc in length and 10 h(-1) Mpc in width at the redshift of Abell 22. |
Identificador | |
Idioma(s) |
eng |
Publicador |
Oxford University Press |
Palavras-Chave | #Galaxies: Clusters: Individual: Abell 22 #Large-scale Structure Of Universe #Surveys #Galaxies |
Tipo |
Journal Article |