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NGC 262 (also known as Markarian 348) is the largest known spiral galaxy, [5] located in the constellation Andromeda. [1] It is a Seyfert 2 spiral galaxy located 287 million light years away. [2] It was discovered on 17 September 1885 by Lewis A. Swift. [4] According to A.M. Garcia, NGC 262 is a member of the NGC 315 Group (also known as LGG 14).
Nebula Maximum dimension (in light-years/parsecs) Type Notes NGC 262 Halo Cloud 1,300,000 ly (400,000 pc) [1] H I region: Spiral nebula surrounding NGC 262, which is one of the largest known galaxies. Leo Ring: 650,000 ly (200,000 pc) [2] HVC: A large ring of cold gas that formed from a collision of two galaxies. [3] Magellanic Stream: 600,000 ...
NGC 2626 is a reflection nebula, emission nebula, and absorption nebula in the constellation Vela. [ 4 ] [ 5 ] It is mostly illuminated by B1 star CD-40 4432 and ionized by the O8 quadruple star system HD 73882 , together with other stars.
Neutron stars are stellar remnants produced when a star of around 8–9 solar masses or more explodes in a supernova at the end of its life. They are usually produced by stars of less than 20 solar masses, although a more massive star may produce a neutron star in certain cases. [2] 4U 1820-30: 9.1 Pulsar [3] PSR B0943+10: 10 or 2.6 [a] Pulsar ...
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The super star clusters are arranged in an ellipse around the center of NGC 253, which from the Earth's perspective appears as a flat line. [15] Star formation is also high in the northeast of NGC 253's disk, where a number of red supergiant stars can be found, and in its halo there are young stars as well as some amounts of neutral hydrogen.
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R136 (formerly known as RMC 136 from the Radcliffe Observatory Magellanic Clouds catalogue [4]) is the central concentration of stars in the NGC 2070 star cluster, which lies at the centre of the Tarantula Nebula in the Large Magellanic Cloud.