The Deep Abyss – Astronomy Now

A generous dusting of galaxies against an inky black sky is captured by the four-meter Victor M. Blanco telescope at the Cerro Tololo Inter-American Observatory in Chile. Aside from a handful of prominent stars, recognizable by their diffraction tips, every object seen here is a galaxy, from the faintest splash of red to the dramatic ring of LEDA 14884.

Image: CTIO / NOIRLab / NSF / AURA.

The Deep Abyss This region of the sky is in the constellation Eridanus, the river, which is near the galactic south pole, in the nearby constellation Sculptor. The LEDA Galaxies Catalog refers to the Lyon Extragalactic Database, which contains a list of galaxies and their properties from various separate catalogs (other designations of LEDA 14884 are PGC01484 and ESO303-011.)

As can be seen in this mosaic assembled from images taken by the “ Dark Energy Camera ” on the Victor M. Blanco telescope, there are hundreds, if not thousands of galaxies visible in an area of ​​sky. only 11.62 arcmin per 7.48 arcmin in the zone. The myriad of galaxies seen here were originally part of the Las Campanas Redshift Survey in the late 1980s and 1990s, which measured the redshifts of 26,418 galaxies in six bands across the sky, spanning 700 square degrees in total and focusing on the galactic north and south. posts. The aim of the study was to map the distribution of galaxies, looking for large-scale voids and large walls of galaxies that follow the cosmic network of matter.

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Johnnie Gross

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