Horologium superclusters

from Wikipedia, the free encyclopedia
Horologium superclusters

The Horologium Supercluster (also known as the Horologium Reticulum Supercluster ), consisting of SCl 48 and SCl 49 , is the largest known supercluster with a diameter of 550 million light years and a mass of 10 17 solar masses . The coordinates are right ascension 03 h  19 m and declination −50 ° 02 ′, and it extends over an angular range of 12 ° × 12 °. The part of the supercluster closest to us is 700 million light-years ( redshift = 0.063) away (mainly the clusters in the image below). The other end is 1.2 billion light years from Earth (especially the clusters in the picture above).

The Horologium supercluster lies in the constellations Horologium and Eridanus . It includes about 5,000 groups of galaxies (30,000 galaxies and 300,000 dwarf galaxies ). The supercluster also contains the Abell 3266 galaxy cluster , one of the largest in the southern sky. The map shows every galaxy cluster which is brighter than the apparent magnitude 17.

swell

  • Fleenor, Matthew C .; Rose, James A .; Christiansen, Wayne A .; Hunstead, Richard W .; Johnston-Hollitt, Melanie; Drinkwater, Michael J .; Saunders, William: Large-Scale Velocity Structures in the Horologium-Reticulum Supercluster . In: The Astronomical Journal . 130, No. 3, September 2005, pp. 957-967. arxiv : astro-ph / 0505361 . bibcode : 2005AJ .... 130..957F . doi : 10.1086 / 431972 .

Web links