Sculptor Wall Explained

The Sculptor Wall is a superstructure of galaxies ("wall of galaxies") relatively near to the Milky Way Galaxy (redshift of approximately z=0.03), also known as the Sculptor superclusters.^{[1] [2]}

The superstructure is also called the Southern Great Wall, the Great Southern Wall, or just the Southern Wall, in reference to the Northern Great Wall. The structure is 8000 km/s long (where km/s indicates the rate of expansion between two objects at the extents of a superstructure), 5000 km/s wide, 1000 km/s deep, in redshift space dimensions.^{[3] [4]} Because these structures are so large, it is convenient to estimate their size by measuring their redshift; using a value of 67.8 for Hubble's Constant, the size of the structure is approximately 100 Mpc long by 70 Mpc wide by 10 Mpc deep.

The Grus Wall is "perpendicular" to the Fornax Wall and Sculptor Wall.^[5]

Notes and References

1. Taotao Fang, David A. Buote, Philip J. Humphrey, Claude R. Canizares, Luca Zappacosta, Roberto Maiolino, Gianpiero Tagliaferri and Fabio Gastaldello; CONFIRMATION OF X-RAY ABSORPTION BY WARM-HOT INTERGALACTIC MEDIUM IN THE SCULPTOR WALL; 2010 ApJ 714 1715,,,, http://iopscience.iop.org/0004-637X/714/2/1715?fromSearchPage=true&v_showaffiliations=no
2. Fairall, A. P., Palumbo, G. G. C., Vettolani, G., Kauffman, G., Jones, A., & Baiesi-Pillastrini, G., Largescale Structure in the Universe - Plots from the Updated Catalogue of Radial Velocities of Galaxies and the Southern Redshift Catalogue Journal: R.A.S. MONTHLY NOTICES V.247, NO.2/NOV15, P. 23P, 1990. Bibliographic Code: http://adsabs.harvard.edu/full/1990MNRAS.247P..21F (slices 8 and 10 under SGH)
3. Unveiling large-scale structures behind the Milky Way. Astronomical Society of the Pacific Conference Series, Vol. 67; Proceedings of a workshop at the Observatoire de Paris-Meudon; 18–21 January 1994; San Francisco: Astronomical Society of the Pacific (ASP); c1994; edited by Chantal Balkowski and R. C. Kraan-Korteweg, p. 21; Visualization of Nearby Large-Scale Structures; Fairall, A. P., Paverd, W. R., & Ashley, R. P.;
4. 'Astrophysics and Space Science', Volume 230, Issue 1-2, pp. 225-235 Large-Scale Structures in the Distribution of Galaxies 08/1995
5. Book: O'Meara . Stephen James . Deep-Sky Companions: Southern Gems . April 8, 2013 . . 978-1-107-01501-2. 107 .