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NGC 3748
NGC 3748 is a lenticular galaxy with a bar located in the Leo (constellation), Leo constellation. It is located 440 million light-years away from the Solar System and was discovered by Ralph Copeland on April 5, 1874, but also observed by Hermann Kobold, Lawrence Parsons, 4th Earl of Rosse, Lawrence Parsons and John Louis Emil Dreyer. Like NGC 3746, NGC 3748 also has a recessed core (RET). It is described as, "moderately bright, fairly small, slightly elongated NW-SE, 0.4'x0.3' with a small bright core". Copeland Septet NGC 3748 is a member of the Copeland Septet which is made up of 7 galaxies which were discovered by Copeland in 1874. The other members are NGC 3745, NGC 3746, NGC 3750, NGC 3751, NGC 3753 and NGC 3754. Halton Arp noticed the Galaxy, galaxies in this group in an article that was published in 1966. This group is known as Atlas of Peculiar Galaxies, Arp 320 along with another galaxy, PGC 36010. This group was observed by Paul Hickson whom he included in his art ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 3745
NGC 3745 is a lenticular galaxy with a bar structure located in the constellation of Leo (constellation), Leo. NGC 3745 is located 471 million Light-year, light-years away from the Solar System and was discovered by Ralph Copeland on April 5, 1874, but also observed by Hermann Kobold, Lawrence Parsons, 4th Earl of Rosse, Lawrence Parsons and John Louis Emil Dreyer. Copeland Septet NGC 3745 is a member of the Copeland Septet. The other members of the group are NGC 3746, NGC 3748, NGC 3750, NGC 3751, NGC 3753 and NGC 3754. Halton Arp noticed the group when he published the article in 1966. The group is designated as Atlas of Peculiar Galaxies, Arp 320 in which another galaxy PGC 36010, is part of it. This group was also observed by Paul Hickson, in which he included them inside his article in 1982. This group is known as Hickson Compact Group, Hickson 57, in which NGC 3745 is designated as HCG 57G.{{Cite web , title=Data from Revised NGC and IC catalogue by Wolfgang Steinickle - N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Parsons, 4th Earl Of Rosse
Lawrence Parsons, 4th Earl of Rosse, KP, FRS (17 November 1840 – 29 August 1908) was a member of the Irish peerage and an amateur astronomer. His name is often given as Laurence Parsons. Biography He was born at Birr Castle, Parsonstown, King's County, Ireland, the son and heir of the astronomer William Parsons, 3rd Earl of Rosse who built the "Leviathan of Parsonstown" telescope, largest of its day, and his wife, the Countess of Rosse (née Mary Field), an amateur astronomer and pioneering photographer. Lawrence succeeded his father in 1867 and was educated first at home by tutors, like John Purser, and after at Trinity College Dublin and Oxford University. He was the brother of Charles Algernon Parsons, inventor of the steam turbine. He served as the eighteenth Chancellor of Trinity College, Dublin between 1885 and 1908. His father served as the sixteenth Chancellor. He was Lord Lieutenant of King's County and Custos Rotulorum of King's County from 1892 to his death. He w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LEDA Objects
Leda may refer to: Mythology * Leda (mythology), queen of Sparta and mother of Helen of Troy in Greek mythology Places * Leda, Western Australia, a suburb of Perth, Western Australia * Leda makeshift settlement, Bangladesh, a refugee camp for Rohingya refugees fleeing persecution in Myanmar * Leda, Burkina Faso, a town * Leda, Adamawa State, Nigeria, a village - see List of villages in Adamawa State * Leda (river), a tributary of the Ems in Germany * Leda Ridge, Antarctica Astronomy * Leda (moon), a moon of Jupiter * 38 Leda, an asteroid * Leda, the original proposed name for exoplanet Pollux b, Thestias * Lyon-Meudon Extragalactic Database, an astronomical catalog of galaxies * Large Aperture Experiment to Detect the Dark Ages, a radio interferometer Entertainment * ''Leda: The Fantastic Adventure of Yohko'', a 1985 Japanese OVA * ''Web of Passion'', a French film released in the US as ''Leda'' * Project Leda, a set of female clones in the TV series ''Orphan Black'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Principal Galaxies Catalogue Objects
Principal may refer to: Title or rank * Principal (academia), the chief executive of a university ** Principal (education), the office holder/ or boss in any school * Principal (civil service) or principal officer, the senior management level in the UK Civil Service * Principal dancer, the top rank in ballet * Principal (music), the top rank in an orchestra Law * Principal (commercial law), the person who authorizes an agent ** Principal (architecture), licensed professional(s) with ownership of the firm * Principal (criminal law), the primary actor in a criminal offense * Principal (Catholic Church), an honorific used in the See of Lisbon Places * Principal, Cape Verde, a village * Principal, Ecuador, a parish Media * ''The Principal'' (TV series), a 2015 Australian drama series * ''The Principal'', a 1987 action film * Principal (music), the lead musician in a section of an orchestra * Principal photography, the first phase of movie production * "The Principal", a song on ... [...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. Sulenti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hickson Compact Group
A Hickson Compact Group (abbreviation: HCG) is a collection of galaxies designated as published by Paul Hickson in 1982. The most famous group on Hickson's list of 100 objects is HCG 92, Stephan's Quintet. Hickson Compact Groups According to Hickson: “Most compact groups contain a high fraction of galaxies having morphological or kinematical peculiarities, nuclear radio and infrared emission, and starburst or active galactic nuclei (AGN) activity. They contain large quantities of diffuse gas and are dynamically dominated by dark matter. They most likely form as subsystems within looser associations and evolve by gravitational processes. Strong galaxy interactions result and merging is expected to lead to the ultimate demise of the group. Compact groups are surprisingly numerous, and may play a significant role in galaxy evolution.” List Gallery Image:A fossil in the making.jpg, NGC 201 is a barred spiral galaxy similar to the Milky Way, a member of HCG 7 Image:A members- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlas Of Peculiar Galaxies
The ''Atlas of Peculiar Galaxies'' is a catalog of peculiar galaxies produced by Halton Arp in 1966. A total of 338 galaxies are presented in the atlas, which was originally published in 1966 by the California Institute of Technology. The primary goal of the catalog was to present photographs of examples of the different kinds of peculiar structures found among galaxies. (online version, including Arp's original tabular data, and PDF link) Background Arp realized that the reason why galaxies formed into spiral or elliptical shapes was not well understood. He perceived peculiar galaxies as small "experiments" that astronomers could use to understand the physical processes that distort spiral or elliptical galaxies. With this atlas, astronomers had a sample of peculiar galaxies that they could study in more detail. The atlas does not present a complete overview of every peculiar galaxy in the sky but instead provides examples of the different phenomena as observed in nearby ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxy
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar System. Galaxies, averaging an estimated 100 million stars, range in size from dwarfs with less than a hundred million stars, to the largest galaxies known – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. Most of the mass in a typical galaxy is in the form of dark matter, with only a few percent of that mass visible in the form of stars and nebulae. Supermassive black holes are a common feature at the centres of galaxies. Galaxies are categorized according to their visual morphology as elliptical, spiral, or irregular. Many are thought to have supermassive black holes at their centers. The Milky Way's central black hole, known as Sagittarius A*, has a mass four million times greater than the Sun. As o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halton Arp
Halton Christian "Chip" Arp (March 21, 1927 – December 28, 2013) was an American astronomer. He was known for his 1966 ''Atlas of Peculiar Galaxies'', which (it was later theorized) catalogues many examples of interacting and merging galaxies, though Arp disputed the idea, claiming apparent associations were prime examples of ejections.Halton Arp, ''Seeing Red: Redshift, Cosmology and Academic Science'', Montreal: Aperion (1998), pp. 14, 61–62, 72, 104–105 Arp was also known as a critic of the Big Bang theory and for advocating a non-standard cosmology incorporating intrinsic redshift. Biography Arp was born on March 21, 1927, in New York City. He was married three times, has four daughters and five grandchildren. His bachelor's degree was awarded by Harvard (1949), and his PhD by Caltech (1953). Afterward he became a Fellow of the Carnegie Institution of Washington in 1953, performing research at the Mount Wilson Observatory and Palomar Observatory. Arp became a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 3754
NGC 3754 is a small barred spiral galaxy located in Leo. It is located 447 million light-years away from the Solar System and was discovered on April 5, 1874, by Ralph Copeland. The luminosity class of NGC 3754 is II and it is listed as a LINER galaxy by SIMBAD, meaning, a nucleus presenting an emission spectrum characterized by broad lines of weak ionized atoms. Copeland Septet NGC 3754 is a member of the Copeland Septet which is made up of 7 galaxies discovered by Copeland in 1874. The other members of the group, are NGC 3745, NGC 3746, NGC 3748, NGC 3750, NGC 3751 and NGC 3753. Halton Arp noticed the 7 galaxies in an article published in 1966. This group is designated as Arp 320 in which PGC 36010 is part of them. The 7 galaxies were also observed by Paul Hickson, in which he included them inside his article in 1982. This group is known as Hickson Hickson is an English surname. Notable people with the surname include: *Catherine Hickson (born 1955), Canadian volcano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 3753
NGC 3753 is a large spiral galaxy with a bar located in the Leo constellation. It is located 435 million light-years away from the Solar System and was discovered on February 9, 1874, by Ralph Copeland. NGC 3753 is classified as a LINER galaxy meaning, it presents an emission spectrum characterized by broad lines of weak ionized atoms. It also has a luminosity class of I-II. Copeland Septet NGC 3753 is a member of the Copeland Septet which consists of 7 galaxies discovered by Copeland in 1874. The other members are NGC 3746, NGC 3745, NGC 3748, NGC 3750, NGC 3751 and NGC 3754. Halton Arp noticed the 7 galaxies in the group, in which he published the article in 1966. The group is designated as Arp 320 along another galaxy, PGC 36010. This group was observed by Paul Hickson in which he included them in his article in 1982. The group is known as Hickson Hickson is an English surname. Notable people with the surname include: *Catherine Hickson (born 1955), Canadian volcano ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 3751
NGC 3751 is a type E-S0 lenticular galaxy located in the Leo constellation. It is located 450 million light-years away from the Solar System and was discovered by Ralph Copeland on April 5, 1874. To date, a non-redshift measurement gives a distance of approximately 138,000 Mpc (450 million light-years) for NGC 3751. This value is within the Hubble Distance values. Copeland Septet NGC 3751 is a member of the Copeland Septet. The other members are NGC 3745, NGC 3746, NGC 3748, NGC 3750, NGC 3753 and NGC 3754. Halton Arp noticed the 7 galaxies in which he published inside his article in 1966. This group is known as Arp 320 in which another galaxy, PGC 36010 is part of it. This group was also observed by Paul Hickson, in which he included them inside his article which was published in 1982. It is noted that this group is designated as Hickson 57. NGC 3751 is known as HCG 57F.{{Cite web , title=Data from Revised NGC and IC catalogue by Wolfgang Steinicke - NGC 3700 to 3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
