A study of the Southern Supercluster
The Southern Supercluster is a long chain of galaxies extending from Cetus to Dorado. The densest region of the supercluster lies between supergalactic longitudes 200 to 310{degree} and supergalactic latitudes {minus}38{degree} to {minus}45{degree}. From the contour maps of galaxies from the RC2 two regions A (180{degree} {le} L {le} 320{degree}, {minus}30{degree} {ge} B {ge} {minus}50{degree}) and B (260{degree} {le} L {le} 360{degree}, 0{degree} {ge} B {ge} {minus}30{degree}) were delineated for detailed study. Galaxies from five categories were compiled and the basic parameters were reduced to the RC2 system. Total magnitudes were measured for 105 galaxies and the magnitudes for other galaxies were obtained from the RC3. The radial velocities of 23 galaxies were measured but most of the radial velocities were culled from the literature. A self consistent distance scale was established using tertiary distance indicators, the luminosity index A{sub c} and the maximum rotation velocity logV{sub m} obtained from the HI line widths. Several maps were constructed to investigate the structure of the supercluster in 3-dimensions using the positional coordinates and a distance estimate. The extend, size and shape of the supercluster were determined. To investigate the variation of velocity, distance modulus and Hubble ratio numerical maps were generated and departures from the uniform Hubble flow within the supercluster were determined. Fifteen groups belonging to the supercluster were identified. The mass, luminosity, and mass-to-light ratio of the groups were computed. The total luminosity of the supercluster and its total mass were then estimated. The Southern Supercluster is comparable to the Coma and Hercules Superclusters in terms of mass and luminosity.
- Research Organization:
- Texas Univ., Austin, TX (USA)
- OSTI ID:
- 5179601
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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The Southern Supercluster
Superclusters of galaxies from the 2df redshift survey. 1. the catalogue