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Morphological Catalogue Of Galaxies
The Morphological Catalogue of Galaxies (MCG) or Morfologiceskij Katalog Galaktik, is a Russian catalogue of 30,642 galaxies compiled by Boris Vorontsov-Velyaminov and V. P. Arkhipova. It is based on scrutiny of prints of the Palomar Sky Survey plates, and putatively complete to a photographic magnitude of 15. Including galaxies to magnitude 16 would have resulted in an unmanageably large dataset. Publication The catalogue was published in five parts (chapters) between 1962 and 1974, the final chapter including a certain number of galaxies with a photographic magnitude above 15. HEASARC Gallery |
The Observatory (journal)
''The Observatory'' is a publication, variously described as a journal, a magazine and a review, devoted to astronomy. It appeared regularly starting in 1877, and it is now published every two months. The current editors are David Stickland, Bob Argyle and Steve Fossey. Although it is not published by the Royal Astronomical Society, it publishes the reports of its meetings. Other features are the extensive book reviews and "Here and There", a collection of misprints and ridiculous statements of astronomical interest. The founder and first editor (1877–1882) was William Christie, then chief assistant at the Royal Observatory and later Astronomer Royal. Notable subsequent editors include: * Arthur Eddington (1913–1919) * Harold Spencer Jones (1915–1923) * Richard van der Riet Woolley (1933–1939) * William McCrea (1935–1937) * Margaret Burbidge (1948–1951) * Antony Hewish (1957–1961) * Donald Lynden-Bell (1967–1969) * Carole Jordan (1968–1973) * Jocelyn Bel ... [...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] |
Boris Vorontsov-Velyaminov
Boris Aleksandrovich Vorontsov-Velyaminov (russian: Борис Александрович Воронцов-Вельяминов; February 14, 1904 – January 27, 1994) was a Russian astrophysicist. His name is sometimes given as Vorontsov-Vel'yaminov. He independently discovered the absorption of light by interstellar dust, which was also discovered by Robert Julius Trumpler. He compiled a catalogue of what are now known as Vorontsov-Velyaminov galaxies (the ''Atlas of Interacting Galaxies''), as well as a larger and more general catalogue of galaxies (the ''Morphological Catalogue of Galaxies''). He also studied and classified planetary nebulae. He is also the author of the standard Russian astronomy textbook for high schools as well as astronomy textbook for secondary school. See also *Vorontsov-Vel'yaminov Interacting Galaxies Vorontsov-Vel'yaminov Interacting Galaxies are those included in the Atlas and Catalogue of Interacting Galaxies, by B.A. Vorontsov-Vel'yami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palomar Sky Survey
Palomar may refer to: Places * Any of several locations in San Diego County, California: ** Palomar Mountain ** Palomar Observatory, located on Palomar Mountain ** Palomar College in San Marcos, California ** Palomar Medical Center in Escondido, California ** Palomar Airport, officially McClellan-Palomar Airport, in Carlsbad, California * El Palomar, Buenos Aires, a city in Argentina ** El Palomar (airbase), Argentina * El Palomar, Valencia, a municipality in Spain * Palomar de Arroyos, a town in Aragón, Spain Music * Palomar (band), a band from Brooklyn, New York * Palomar, a band formed by three members of Paw * "Palomar", a 1992 song by the Rheostatics from '' Whale Music'' Other uses * ''Palomar'' (comics), a 2003 graphic novel by Gilbert Hernandez * Palomar Ballroom, in Los Angeles, California * Palomar Handicap, a horse race * Palomar knot * Palomar Pictures, a subsidiary of ABC Pictures People with the surname * Arnau de Palomar (fl. c. 1150), Catalan nobleman * Enriqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photographic Magnitude
Photographic magnitude ( or ) is a measure of the relative brightness of a star or other astronomical object as imaged on a photographic film emulsion with a camera attached to a telescope. An object's apparent photographic magnitude depends on its intrinsic luminosity, its distance and any extinction of light by interstellar matter existing along the line of sight to the observer. Photographic observations have now been superseded by electronic photometry such as CCD charge-couple device cameras that convert the incoming light into an electric current by the photoelectric effect. Determination of magnitude is made using a photometer. Method Prior to photographic methods to determine magnitude, the brightness of celestial objects was determined by visual photometric methods. This was simply achieved with the human eye by compared the brightness of an astronomical object with other nearby objects of known or fixed magnitude : especially regarding stars, planets and other pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MCG+01-02-015
MCG+01-02-015 is a spiral galaxy in the constellation Pisces. It is an example of a void galaxy, and noted to be one of the loneliest galaxies spotted, with no other galaxy around 100 million light-years in all directions. Observational history MCG+01-02-015 was previously classified as an elliptical galaxy of class E2 although higher-resolution imaging has revealed it to be a barred spiral galaxy. Formation It is theorised by many astrophysicists that void galaxies are the result of large galactic filaments being pulled on by the gravity of a neighboring super cluster out of the less densely populated areas, galaxies 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. ... such as MCG+01-02-015 are left behind by events such as these. References Barred spiral galaxies Pisces ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MCG Objects
The Melbourne Cricket Ground (MCG), also known locally as "The 'G", is an Australian sports stadium located in Yarra Park, Melbourne, Victoria. Founded and managed by the Melbourne Cricket Club, it is the largest stadium in the Southern Hemisphere, the 11th largest globally, and the second largest cricket ground by capacity. The MCG is within walking distance of the city centre and is served by Richmond and Jolimont railway stations, as well as the route 70, route 75, and route 48 trams. It is adjacent to Melbourne Park and is part of the Melbourne Sports and Entertainment Precinct. Since it was built in 1853, the MCG has undergone numerous renovations. It served as the centerpiece stadium of the 1956 Summer Olympics, the 2006 Commonwealth Games and two Cricket World Cups: 1992 and 2015. It will also serve as the host for the opening ceremonies of the 2026 Commonwealth Games. Noted for its role in the development of international cricket, the MCG hosted both the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Catalogues Of Galaxies
Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that originates beyond Earth's atmosphere. Cosmology is a branch of astronomy that studies the universe as a whole. Astronomy is one of the oldest natural sciences. The early civilizations in recorded history made methodical observations of the night sky. These include the Babylonians, Greeks, Indians, Egyptians, Chinese, Maya, and many ancient indigenous peoples of the Americas. In the past, astronomy included disciplines as diverse as astrometry, celestial navigation, observational astronomy, and the making of calendars. Nowadays, p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
