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NGC 243
NGC 243 is a lenticular galaxy located in the constellation Andromeda. It was discovered on October 18, 1881 by Édouard Stephan. According to A.M. Garcia, NGC 243 is a member of the NGC 315 Group (also known as LGG 14). This group contains 42 galaxies, including NGC 226, NGC 262, NGC 266 NGC 266 is a massive barred spiral galaxy in the constellation Pisces. NGC 266 is located at a distance of from the Milky Way. It was discovered on September 12, 1784, by William Herschel. The form of this barred galaxy is described by its mor ..., NGC 311, NGC 315, NGC 338, IC 43, IC 66, AND IC 69, among others. References External links * {{DEFAULTSORT:NGC 243 0243 Lenticular galaxies Andromeda (constellation) 002687 Discoveries by Édouard Stephan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New General Catalogue
The ''New General Catalogue of Nebulae and Clusters of Stars'' (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxy, galaxies, star clusters and emission nebulae. Dreyer published two supplements to the NGC in 1895 and 1908, known as the ''Index Catalogues'' (abbreviated IC), describing a further 5,386 astronomical objects. Thousands of these objects are best known by their NGC or IC numbers, which remain in widespread use. The NGC expanded and consolidated the cataloguing work of William Herschel, William and Caroline Herschel, and John Herschel's ''General Catalogue of Nebulae and Clusters of Stars''. Objects south of the Celestial sphere, celestial equator are catalogued somewhat less thoroughly, but many were included based on observation by John Herschel or James Dunlop. The NGC contained multiple errors, but attempts to eliminate them were made by the ''Revised New Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 226
NGC 226 is a spiral galaxy located approximately 216 million light-years from the Sun in the constellation Andromeda. It was discovered on December 21, 1786, by William Herschel. According to A.M. Garcia, NGC 226 is a member of the NGC 315 Group (also known as LGG 14). This group contains 42 galaxies, including NGC 243, NGC 262, NGC 266, NGC 311, NGC 315, NGC 338, IC 43, IC 66, AND IC 69, among others. See also * Spiral galaxy * List of NGC objects (1–1000) * Andromeda (constellation) Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy, and one of the 88 modern constellations. Located in the northern celestial hemisphere, it is named for Andromeda, daughter of Cassiopeia, ... References External links * * SEDS {{DEFAULTSORT:NGC 226 0226 2572 Spiral galaxies Andromeda (constellation) Astronomical objects discovered in 1786 Discoveries by William Herschel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lenticular Galaxies
A lenticular galaxy (denoted S0) is a Galaxy morphological classification, type of galaxy intermediate between an elliptical galaxy, elliptical (denoted E) and a spiral galaxy in galaxy morphological classification schemes. It contains a large-scale disc but does not have large-scale spiral arms. Lenticular galaxies are Disc galaxy, disc galaxies that have used up or lost most of their interstellar matter and therefore have very little ongoing star formation. They may, however, retain significant dust in their disks. As a result, they consist mainly of aging stars (like elliptical galaxies). Despite the morphological differences, lenticular and elliptical galaxies share common properties like spectral features and scaling relations. Both can be considered early-type galaxies that are passively evolving, at least in the local part of the Universe. Connecting the E galaxies with the S0 galaxies are the ES galaxies with intermediate-scale discs. Morphology and structure Classific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC Objects
The ''New General Catalogue of Nebulae and Clusters of Stars'' (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, including galaxies, star clusters and emission nebulae. Dreyer published two supplements to the NGC in 1895 and 1908, known as the ''Index Catalogues'' (abbreviated IC), describing a further 5,386 astronomical objects. Thousands of these objects are best known by their NGC or IC numbers, which remain in widespread use. The NGC expanded and consolidated the cataloguing work of William and Caroline Herschel, and John Herschel's '' General Catalogue of Nebulae and Clusters of Stars''. Objects south of the celestial equator are catalogued somewhat less thoroughly, but many were included based on observation by John Herschel or James Dunlop. The NGC contained multiple errors, but attempts to eliminate them were made by the ''Revised New General Catalogue'' (RNGC) by Jack W. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 338
NGC 338 is a spiral galaxy in the constellation Pisces. Its velocity with respect to the cosmic microwave background is 4479 ± 22km/s, which corresponds to a Hubble distance of . In addition, 22 ''non-redshift'' measurements give a distance of . It was discovered in 1877 by Wilhelm Tempel. It was described by Dreyer as "very faint, very small, irregular figure, brighter middle." According to A.M. Garcia, NGC 338 is a member of the NGC 315 Group (also known as LGG 14). This group contains 42 galaxies, including NGC 226, NGC 243, NGC 262, NGC 266, NGC 311, NGC 315, IC 43, IC 66, AND IC 69, among others. See also * List of NGC objects (1–1000) This is a list of NGC objects 1–1000 from the New General Catalogue (NGC). The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies. Other objects in the catalogue can be found in the other subpages of the list of NG ... References External links * 0338 Astronomical objects discovered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 311
NGC 311 is a lenticular galaxy in the constellation Pisces. Its velocity with respect to the cosmic microwave background is 4636 ± 25km/s, which corresponds to a Hubble distance of . However, one ''non-redshift'' measurement gives a distance of . It was discovered on September 18, 1828, by British astronomer John Herschel. According to A.M. Garcia, NGC 311 is a member of the NGC 315 Group (also known as LGG 14). This group contains 42 galaxies, including NGC 226, NGC 243, NGC 262, NGC 266, NGC 315, NGC 338, IC 43, IC 66, AND IC 69, among others. See also * List of NGC objects (1–1000) This is a list of NGC objects 1–1000 from the New General Catalogue (NGC). The astronomical catalogue is composed mainly of star clusters, nebulae, and galaxies. Other objects in the catalogue can be found in the other subpages of the list of NG ... References External links * 0311 18280918 Pisces (constellation) Lenticular galaxies Discoveries by John Herschel 00343 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 266
NGC 266 is a massive barred spiral galaxy in the constellation Pisces. NGC 266 is located at a distance of from the Milky Way. It was discovered on September 12, 1784, by William Herschel. The form of this barred galaxy is described by its morphological classification of SB(rs)ab, which indicates a quasi-ring-like structure (rs) and moderate-to-tightly wound spiral arms (ab). According to A.M. Garcia, NGC 266 is a member of the NGC 315 Group (also known as LGG 14). This group contains 42 galaxies, including NGC 226, NGC 243, NGC 262, NGC 311, NGC 315, NGC 338, IC 43, IC 66, AND IC 69, among others. Also, a 2013 paper lists NGC 266 as the dominant member of a small group with six low-mass galaxies. NGC 266 is an LINER-type active galaxy. It has a moderate star formation rate estimated at ·yr−1. A diffuse X-ray emission from hot gas has been detected around this galaxy, extending out to a radius of at least 70,000 light years. This emission not being driven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 262
NGC 262 (also known as Markarian 348) is the largest known spiral galaxy, located in the constellation Andromeda. It is a Seyfert 2 spiral galaxy located 287 million light years away. It was discovered on 17 September 1885 by Lewis A. Swift. According to A.M. Garcia, NGC 262 is a member of the NGC 315 Group (also known as LGG 14). This group contains 42 galaxies, including NGC 226, NGC 243, NGC 266, NGC 311, NGC 315, NGC 338, IC 43, IC 66, and IC 69, among others. Size This galaxy has an estimated diameter of 1.3 Million Light-years. It holds approximately 15 trillion stars. NGC 262 was tidally disturbed by the gravitational forces of smaller galaxies, which resulted in its large size. NGC 262 is very unusual, since it is 10 times larger than a regular spiral galaxy of its type. According to Morris and Wannier, NGC 262 is surrounded by a huge cloud of neutral hydrogen that is probably caused by the tidal stripping of smaller galaxies. The cloud has an apparent mass o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyons Groups Of Galaxies
Lyons Groups of Galaxies (or LGG) is an astronomical catalog of nearby groups of galaxies complete to a limiting apparent magnitude B0=14.0 with a recession velocity smaller than 5,500 km/s. The catalogue was obtained from the Lyon-Meudon Extragalactic Database. Two methods were used in group construction: a percolation method derived from Huchra and Geller and a hierarchical method initiated by R. Brent Tully. The catalog is a synthesized version of the two results. The LGG includes 485 groups and 3,933 member galaxies. See also * Abell catalogue * New General Catalogue * Messier Catalogue The Messier objects are a set of 110 astronomical objects catalogued by the French astronomer Charles Messier in his ' (''Catalogue of Nebulae and Star Clusters''). Because Messier was interested only in finding comets, he created a list of thos ... References External links LGG description at CDSFull LGG list of records at CDSADS: General study of group membership. II - D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
