| name = [[Atlas of Peculiar Galaxies|Arp]] 220
[[Uppsala General Catalogue|UGC]] 9913,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 55497<ref name="ned" />
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7 KB (1,006 words) - 14:34, 5 February 2018
| names = [[Principal Galaxies Catalogue|PGC]] 41121<ref name="ned" /> and [[Hipparcos Catalogue|HIP]] 609
...4.83, it means that the quasar is over 4 trillion times more [[Luminosity|luminous]] than the Sun at visible wavelengths. The mass of its central black hole
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11 KB (1,478 words) - 14:28, 5 February 2018
...[redshift]] of ''z'' = 0.1; there are redshifts for luminous red galaxies as far as ''z'' = 0.7, and for [[quasar]]s as far as ''z'' =
...rs in the Milky Way. DR10 also includes over 670,000 new BOSS spectra of [[galaxies]] and [[quasars]] in the distant universe. The publicly available images fr
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25 KB (3,589 words) - 14:34, 5 February 2018
|known_for = [[Intrinsic redshift]]<br />[[Atlas of Peculiar Galaxies]]
...catalogues many examples of [[interacting galaxies|interacting and merging galaxies]]. Arp was also known as a critic of the [[Big Bang|Big Bang theory]] and
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19 KB (2,646 words) - 16:44, 2 August 2020