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The mean ISW imprint 50 supervoids have on the Cosmic Microwave Background: [9] [clarification needed] color scale from -20 to +20 μK.. One possible explanation of the cold spot is a huge void between us and the primordial CMB.
Southern Eridanus Void: The Southern Eridanus void is connected to the Eridanus void by a hole in the distribution of galaxies separating the two. A hole in the distribution of galaxies separating Sculptor and Southern Eridanus voids the size of (redshift) 1250 km/s appears to exist. [11] Fornax Void: Hercules Void: 15.5 h +30° cz=7000 km/s ...
Eridanus is a constellation which stretches along the southern celestial hemisphere. It is represented as a river . One of the 48 constellations listed by the 2nd century AD astronomer Ptolemy , it remains one of the 88 modern constellations .
The Eridanus Group, sometimes called the Eridanus Cloud, is a nearby loose grouping of galaxies at a mean distance of approximately 75 Mly (23 ± 2 Mpc) in the constellation Eridanus. [1] Redshift values show that there are approximately 200 galaxies associated with the group, approximately 70% of which are spiral and irregular type galaxies ...
They were able to measure the mass of the black hole. They determined the mass of about 660 million solar-masses with an uncertainty of just 10%. NGC 1332's black hole is the most massive black hole in the Eridanus Cluster, and it is even more massive than NGC 1399's black hole (NGC 1399 is the Fornax cluster's central galaxy). [8]
NGC 1309 is a spiral galaxy located approximately 120 million light-years away, appearing in the constellation Eridanus. It was discovered by German-British astronomer William Herschel on 3 October 1785. [3] NGC 1309 is about 75,000 light-years across, and is about 3/4s the width of the Milky Way.
In 1847, John Herschel had pointed out the existence of a stream of galaxies or nebulae as they were known at the time in the constellations of Cetus, Fornax, Eridanus, Horologium, and Dorado. Later in 1953 Gérard de Vaucouleurs recognized this band as a supercluster [ 1 ] dubbing it the ''southern supergalaxy'', [ 13 ] with many of the groups ...
NGC 1084 is an unbarred spiral galaxy in the constellation Eridanus.It is located at a distance of about 63 million light-years away from the Milky Way.The galaxy was discovered by William Herschel on 10 January 1785.