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1A, 2A, 3A — Lists of X-ray sources from the Ariel V satellite [2] 1C — First Cambridge Catalogue of Radio Sources; 1ES — Einstein Slew Survey [1] [3] 1FGL, 2FGL [4] — Lists of gamma-ray sources from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope; 1RXH — ROSAT HRI Pointed Observations
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies.
Astrophysics is the branch of astronomy that deals with the physics of the universe, including the physical properties (luminosity, density, temperature, chemical composition) of astronomical objects such as stars, galaxies, and the interstellar medium, as well as their interactions.
NGC 2556 can be visible from both the Northern and Southern hemispheres since it is near the celestial equator. [2] NGC 2556 was discovered on February 17, 1865 by the astronomer Albert Marth, and it is not known to have an active galactic nucleus. [3] [1] NGC 2556 is a member of the LGG 158 galaxy group.
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Most extreme example in the list of moderate-redshift galaxies with the highest density starbursts yet observed found in the Wide-field Infrared Survey Explorer data (Diamond-Stanic et al. 2012). [160] Cosmos Redshift 7: z = 6.604 Sextans: Brightest distant galaxy (z > 6, 12.9 billion light-years)
Virgo A, Virgo X-1, NGC 4486, UGC 7654, PGC 41361, VCC 1316, Arp 152, 3C 274, [5] 3U 1228+12. [ 9 ] Messier 87 (also known as Virgo A or NGC 4486 , generally abbreviated to M87 ) is a supergiant elliptical galaxy in the constellation Virgo that contains several trillion stars.
Alpha Persei (Latinized from α Persei, abbreviated Alpha Per, α Per), formally named Mirfak [11] (pronounced / ˈ m ɜːr f æ k / or / ˈ m ɪər f æ k /), [12] is the brightest star in the northern constellation of Perseus, outshining the constellation's best-known star, Algol (β Persei).