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Königliches Astronomisches Rechen Institut
The Astronomical Calculation Institute (german: Astronomisches Rechen-Institut; ARI) is a research institute in Heidelberg, Germany, dating from the 1700s. Beginning in 2005, the ARI became part of the Center of Astronomy (University of Heidelberg), Center for Astronomy at Heidelberg University (', ). Previously, the institute directly belonged to the state of Baden-Württemberg. Description The ARI has a rich history. It was founded in 1700 in Dahlem (Berlin), Berlin-Dahlem by Gottfried Kirch. It had its origin in a patent application by Frederick I of Prussia, who introduced a monopoly on publishing star catalogs in Prussia. In 1945 the Institute was moved by the Americans nearer to the United States Army Garrison Heidelberg. On January 1, 2005 the combined Center for Astronomy institute formed by combining ARI, with the Institute of Theoretical Astrophysics (University of Heidelberg), Institute of Theoretical Astrophysics (', ITA) and the Landessternwarte Heidelberg-Köni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astronomical Calculation Institute (University Of Heidelberg)
The Astronomical Calculation Institute (german: Astronomisches Rechen-Institut; ARI) is a research institute in Heidelberg, Germany, dating from the 1700s. Beginning in 2005, the ARI became part of the Center for Astronomy at Heidelberg University (', ). Previously, the institute directly belonged to the state of Baden-Württemberg. Description The ARI has a rich history. It was founded in 1700 in Berlin-Dahlem by Gottfried Kirch. It had its origin in a patent application by Frederick I of Prussia, who introduced a monopoly on publishing star catalogs in Prussia. In 1945 the Institute was moved by the Americans nearer to the United States Army Garrison Heidelberg. On January 1, 2005 the combined Center for Astronomy institute formed by combining ARI, with the Institute of Theoretical Astrophysics (', ITA) and the Landessternwarte Heidelberg-Königstuhl ("Heidelberg-Königstuhl State Observatory", LSW). The ARI has been responsible among other things for the Gliese catal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Dynamics
Stellar dynamics is the branch of astrophysics which describes in a statistical way the collective motions of stars subject to their mutual gravity. The essential difference from celestial mechanics is that the number of body N \gg 10. Typical galaxies have upwards of millions of macroscopic gravitating bodies and countless number of neutrinos and perhaps other dark microscopic bodies. Also each star contributes more or less equally to the total gravitational field, whereas in celestial mechanics the pull of a massive body dominates any satellite orbits. Connection with fluid dynamics Stellar dynamics also has connections to the field of plasma physics. The two fields underwent significant development during a similar time period in the early 20th century, and both borrow mathematical formalism originally developed in the field of fluid mechanics. In accretion disks and stellar surfaces, the dense plasma or gas particles collide very frequently, and collisions result in equ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christfried Kirch
Christfried Kirch (24 December 1694, Guben – 9 March 1740, Berlin) was a German astronomer and almanac publisher. Life and work He was born in Guben, Germany the son of the astronomers Gottfried Kirch and Maria Margaretha Kirch. Christfried had already participated in the solar observations of his father at the age of 12. His astronomical studies began in Leipzig and Danzig. From 1716 until his death in 1740 he was, like his father, Direktor of the Berlin Observatory, in spite of repeated requests from the Academy of Sciences in Saint Petersburg. In 1717 he had received his father's former post at the Königlich Preußischen Sozietät der Wissenschaften. In the continuation of his father's work, especially in almanac calculation, he was aided by his mother and his younger sister . In 1726 Kirch was made responsible for the academy's library which up until then had been the responsibility of the secretary of the academy, Johann Theodor Jablonski, and was appointed Librarian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Heinrich Hoffmann
Johann Heinrich Hoffmann (1669 in /Thüringen; April 6, 1716 in Berlin) was a German astronomer. Life and work Hoffmann was a student of Erhard Weigel and, until his death in 1699, his (assistant). He accompanied him on his journey of 1696 - 1697 to Denmark and Sweden. From February 1701 Hoffmann was employed first as Adjunkt and later as astronomer and observator at the Königlich Preußischen Sozietät der Wissenschaften in Berlin. At the Berlin Observatory he began his duties as assistant of the first director Gottfried Kirch and after the latter's death in 1710, he succeeded him as director and continued the main task of calculating the calendar, up till his own death.ARIDirektoren des Astronomischen Rechen-Instituts (bis 1874 der Berliner Sternwarte) Apart from his activities as director of the Berlin Observatory, from 1705 he led at the same time the private observatory of Bernhard Friedrich von Krosigk and was from 1710 until at least 1712 also a teacher to the Cadet C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainer Spurzem
Rainer Spurzem is a German astronomer at the Astronomisches Rechen-Institut in Heidelberg, Germany. His speciality is the N-body simulation of galaxies and star clusters. With Sverre Aarseth, he was the first to simulate core collapse of a star cluster using a direct N-body algorithm on a Cray supercomputer. Rainer Spurzem is a leader of the GRACE project, which uses reconfigurable hardware for astrophysical particle simulations. The GRACE project was funded via grants from the Volkswagen Foundation and from the Ministry of Science, Research and Art of Baden-Württemberg. He also designed gravitySimulator, a special-purpose computer based on GRAPE accelerator boards at the Rochester Institute of Technology Rochester Institute of Technology (RIT) is a private university, private research university in the town of Henrietta, New York, Henrietta in the Rochester, New York, metropolitan area. The university offers undergraduate and graduate degree ....S. Harfst ''et al.'' (20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Scholl (astronomer)
Hans Scholl (born 1942) is a German astronomer, who worked at the Astronomisches Rechen-Institut in Heidelberg, Germany, and at the Côte d'Azur Observatory in Nice, France. In 1999, he was part of a team that discovered three moons of Uranus: Prospero, Setebos and Stephano. He has also co-discoverered 55 minor planets together with Italian astronomer Andrea Boattini at ESO's La Silla Observatory site in northern Chile during 2003–2005. Scholl is known for his theoretical work on the orbits of minor planets. He has studied the orbital resonance of outer main-belt asteroids, as well as the orbits of 2062 Aten, a near-Earth object, and 2060 Chiron, a centaur and comet. His broad range of minor planet research included problems from mass determination to asteroid missions and from libration to depletion. He was honored by the outer main-belt asteroid 2959 Scholl, discovered by English–American astronomer Edward Bowell Edward L. G. "Ted" Bowell (born 1943 in London ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lutz D
Lutz is a surname and given name, occasionally a short form of Ludwig. People with the name include: Surname *Adolfo Lutz (1855–1940), Brazilian physician *Aleda E. Lutz (1915–1944), American Army flight nurse *Alois Lutz, Austrian figure skater, for whom the Lutz jump is named *Anke Lutz (born 1970), German chess master *Berta Lutz (1894–1976), Brazilian scientist and feminist *Bob Lutz (American football), American high school football coach *Bob Lutz (businessman) (born 1932), Swiss American V.P. of General Motors *Bob Lutz (tennis) (born 1947), American tennis player *Bobby Lutz (basketball) (born 1958), American college basketball coach *Brenda Lutz, Scottish-American political science writer *Carl Lutz (1895–1975), Swiss vice-consul to Hungary during WWII, credited with saving over 62,000 Jews *Chris Lutz, (born 1985), American-Filipino professional basketball player *Christopher Lutz (born 1971), German chess grandmaster * Eduard von Lutz, (1810–1893), Bavarian M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eugene Rabe
Eugene Karl Rabe (May 8, 1911 – July 1974) was a German-American astronomer. He was born in Berlin, Germany, the son of Hermann and Luise. From 1937–1948 he was a member of the staff at the Heidelberg, Germany branch of the Astronomisches Rechen-Institut. After World War II it was arranged for him to come to the United States. He then became professor of astronomy at the University of Cincinnati, while working at the Cincinnati Observatory. His work included orbital motions of the Trojan asteroids, and particularly the orbit of 433 Eros. In 1951, he used twenty years worth of observations of Eros to determine the gravitational perturbations of the planets. From these, he calculated the most accurate masses to that date of Mercury, Venus, Mars and the Moon. The minor planet 1624 Rabe Sixteen or 16 may refer to: *16 (number), the natural number following 15 and preceding 17 *one of the years 16 BC, AD 16, 1916, 2016 Films * '' Pathinaaru'' or ''Sixteen'', a 2010 Tamil fil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gliese Catalogue Of Nearby Stars
The ''Gliese Catalogue of Nearby Stars'' (, English ) is a star catalogue listing stars located within 25 parsecs (81.54 lightyear, ly) of the Sun. First edition and supplements In 1957 Germans, German astronomer Wilhelm Gliese published his first star catalogue of 915 known stars within of Earth, listing their known properties and ordered geographically by right ascension. Stars in the first catalogue are designated by coding ''GL NNN'', the N representing the consecutive integer number based on this order. Gliese published an update as the ''Catalogue of Nearby Stars'' in 1969, all known stars to , which catalogued 1,529 stars, encoded as ''Gl NNN.NA'' (prefix Gl and the entries of twelve years before gained a .0 affix; the more than 500 additional stars were recorded using interspersed 0.1, 0.2 etc. numbering). This list therefore numbered from 1.0 to 915.0 as no stars were entered after 915.0. and retained a strict right ascension order. A Supplement published in 1970 by Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hartmut Jahreiß
Hartmut Jahreiß (born 1942) is a German astronomer associated with Astronomisches Rechen-Institut specializing in the study of nearby stars. Work Hartmut Jahreiß obtained his Ph.D from the University of Heidelberg. His thesis was on the spatial distribution, kinetics and age of stars near the Sun. Jahreiß soon began work at Astronomisches Rechen-Institut with Wilhelm Gliese, a world-renowned authority on nearby stars. Jahreiß is best known for his collaboration with Gliese on the publication of new editions of the ''Gliese Catalogue of Nearby Stars'' in 1979 and 1991. Upon the death of Gliese in 1993, Jahreiß wrote Gliese's obituary. The Gliese catalog stars are now known by the abbreviation ''GJ'' (Gliese–Jahreiß) in recognition of Jahreiß's contribution. Jahreiß contributed to the Hipparcos catalogs of nearby stars. In 1997, as a member of the Research Consortium on Nearby Stars (RECONS), he identified GJ 1061, at a distance of just 3.68 parsecs, as the 20th closest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joachim Wambsganß
Joachim (; ''Yəhōyāqīm'', "he whom Yahweh has set up"; ; ) was, according to Christian tradition, the husband of Saint Anne and the father of Mary, the mother of Jesus. The story of Joachim and Anne first appears in the Biblical apocryphal Gospel of James. His feast day is 26 July, a date shared with Saint Anne. In Christian tradition The story of Joachim, his wife Anne (or Anna), and the miraculous birth of their child Mary, the mother of Jesus, was told for the first time in the 2nd-century apocryphal infancy-gospel the Gospel of James (also called Protoevangelium of James). Joachim was a rich and pious man, who regularly gave to the poor. However, Charles Souvay, writing in the ''Catholic Encyclopedia'', says that the idea that Joachim possessed large herds and flocks is doubtful. At the temple, Joachim's sacrifice was rejected, as the couple's childlessness was interpreted as a sign of divine displeasure. Joachim consequently withdrew to the desert, where he fasted and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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