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Robert Julius Trumpler
Robert Julius Trumpler (until 1915 Robert Trümpler, born October 2, 1886 in Zürich, Switzerland; died September 10, 1956 in Berkeley, United States) was a Swiss-American astronomer. Career After initial schooling, Trumpler entered the Universität Zürich but later transferred to the University of Göttingen where he earned his PhD in 1910. In 1915, during World War I, he emigrated to the United States and joined the University of California. He took a position at Allegheny Observatory, and later went to Lick Observatory. In 1921, he became a naturalized citizen of the United States. He was elected a member of the United States National Academy of Sciences in 1932. He is most noted for observing that the brightness of the more distant open clusters was lower than expected, and the stars appeared more red. This was explained by the interstellar dust scattered through the galaxy, resulting in the absorption (extinction) of light or interstellar extinction of light. Trumpler furt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Julius Trumpler
Robert Julius Trumpler (until 1915 Robert Trümpler, born October 2, 1886 in Zürich, Switzerland; died September 10, 1956 in Berkeley, United States) was a Swiss-American astronomer. Career After initial schooling, Trumpler entered the Universität Zürich but later transferred to the University of Göttingen where he earned his PhD in 1910. In 1915, during World War I, he emigrated to the United States and joined the University of California. He took a position at Allegheny Observatory, and later went to Lick Observatory. In 1921, he became a naturalized citizen of the United States. He was elected a member of the United States National Academy of Sciences in 1932. He is most noted for observing that the brightness of the more distant open clusters was lower than expected, and the stars appeared more red. This was explained by the interstellar dust scattered through the galaxy, resulting in the absorption (extinction) of light or interstellar extinction of light. Trumpler furt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstellar Extinction
In astronomy, extinction is the absorption and scattering of electromagnetic radiation by dust and gas between an emitting astronomical object and the observer. Interstellar extinction was first documented as such in 1930 by Robert Julius Trumpler. However, its effects had been noted in 1847 by Friedrich Georg Wilhelm von Struve, and its effect on the colors of stars had been observed by a number of individuals who did not connect it with the general presence of galactic dust. For stars that lie near the plane of the Milky Way and are within a few thousand parsecs of the Earth, extinction in the visual band of frequencies (photometric system) is roughly 1.8 magnitudes per kiloparsec. For Earth-bound observers, extinction arises both from the interstellar medium (ISM) and the Earth's atmosphere; it may also arise from circumstellar dust around an observed object. Strong extinction in earth's atmosphere of some wavelength regions (such as X-ray, ultraviolet, and infrared) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trumpler 14
Trumpler 14 (''Tr 14'') is an open cluster with a diameter of , located within the inner regions of the Carina Nebula, approximately from Earth. Together with the nearby Trumpler 16, they are the main clusters of the Carina OB1 stellar association, which is the largest association in the Carina Nebula, although Trumpler 14 is not as massive or as large as Trumpler 16. About stars have been identified in Trumpler 14 and the total mass of the cluster is estimated to be 4,300 . Age It is one of the youngest known star clusters, estimates range from 300 to 500 thousand years old. For comparison, the massive super star cluster R136 is about 1 to 2 million years old, and the famous Pleiades is about 115 million years old. Members Due to its location within the inner parts of the Carina Nebula, Trumpler 14 is currently undergoing massive star formation. As a result, the star cluster exhibits many stars of late O to early A spectral type, which are very massive (at least 10 solar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trumpler 2
Trumpler 2 is an open cluster located in the constellation Perseus. It is approximately 2000 light-years from Earth, placing its position within the Perseus Arm of the Milky Way Galaxy The Milky Way is the galaxy that includes our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye. .... Although at this large distance, it can be seen with the naked eye, at magnitude 6. It has a central red star named HD 16068 of spectral type K3.5II-III, and is visually the brightest star of the cluster as seen from Earth. See also * NGC 957 - a nearby open cluster References External links * Open clusters Perseus (constellation) Trumpler catalog {{star-cluster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trumpler 14 By Hubble
Trumpler or Trümpler may refer to: Surname * Hans-Konrad Trümpler (born 1960), Swiss rower *Robert Julius Trumpler Robert Julius Trumpler (until 1915 Robert Trümpler, born October 2, 1886 in Zürich, Switzerland; died September 10, 1956 in Berkeley, United States) was a Swiss-American astronomer. Career After initial schooling, Trumpler entered the Univers ... (1886–1956), Swiss-American astronomer Astronomy * Trumpler (lunar crater), a lunar impact crater * Trumpler (Martian crater), a crater in the Phaethontis quadrangle of Mars * Trumpler classification {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, only being larger than Mercury (planet), Mercury. In the English language, Mars is named for the Mars (mythology), Roman god of war. Mars is a terrestrial planet with a thin atmosphere (less than 1% that of Earth's), and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of iron and nickel. Mars has surface features such as impact craters, valleys, dunes and polar ice caps. It has two small and irregularly shaped moons, Phobos (moon), Phobos and Deimos (moon), Deimos. Some of the most notable surface features on Mars include Olympus Mons, the largest volcano and List of tallest mountains in the Solar System, highest known mountain in the Solar System and Valles Marineris, one of the largest canyons in the Solar System. The North Polar Basin (Mars), Borealis basin in the Northern Hemisphere covers approximately 40% of the planet and may be a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trumpler (Martian Crater)
Trumpler is a crater in the Phaethontis quadrangle of Mars, located at 61.8°S latitude and 150.8°W longitude. It measures approximately in diameter and was named after Swiss-American astronomer Robert Julius Trumpler (1886–1956). The name was approved by IAU's Working Group for Planetary System Nomenclature in 1973. Description The first image below shows the relationship among three craters that are near each other. Keeler Crater is to the North of Trumpler Crater. After Keeler was formed, a later impact formed Trumpler Crater, and in the process destroyed part of Keeler. Wikikeelertrumplerwright.png, MOLA image showing the relationship among Wright, Keeler, and Trumpler Craters. Colors indicate elevations. Wikitrumpler.jpg, Trumpler Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Dark band near the top is defrosting dunes. Wikitrumplerdunes.jpg, Enlargement of dunes along northern wall (near top of image) of Trumpler Crater, as seen by CTX camera (on M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moon
The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of Australia). The Moon is a planetary-mass object with a differentiated rocky body, making it a satellite planet under the geophysical definitions of the term and larger than all known dwarf planets of the Solar System. It lacks any significant atmosphere, hydrosphere, or magnetic field. Its surface gravity is about one-sixth of Earth's at , with Jupiter's moon Io being the only satellite in the Solar System known to have a higher surface gravity and density. The Moon orbits Earth at an average distance of , or about 30 times Earth's diameter. Its gravitational influence is the main driver of Earth's tides and very slowly lengthens Earth's day. The Moon's orbit around Earth has a sidereal period of 27.3 days. During each synodic period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trumpler (lunar Crater)
260px, Oblique Nušl_(crater).html"_;"title="Lunar_Orbiter_2_image_with_Trumpler_below_center_and_Nušl_(crater)">Nušl_above_center Trumpler_is_a_Lunar_craters.html" "title="Nušl_(crater)">Nušl_above_center.html" ;"title="Nušl_(crater).html" ;"title="Lunar Orbiter 2 image with Trumpler below center and Nušl (crater)">Nušl above center">Nušl_(crater).html" ;"title="Lunar Orbiter 2 image with Trumpler below center and Nušl (crater)">Nušl above center Trumpler is a Lunar craters">lunar Lunar most commonly means "of or relating to the Moon". Lunar may also refer to: Arts and entertainment * ''Lunar'' (series), a series of video games * "Lunar" (song), by David Guetta * "Lunar", a song by Priestess from the 2009 album ''Prior t ... impact crater on the Far side (Moon), far side of the Moon, named after Swiss-American astronomer Robert Julius Trumpler (1886–1956). It lies just to the south of the crater Nušl (crater), Nušl, and northwest of Freundlich (crater), Fre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert J
The name Robert is an ancient Germanic given name, from Proto-Germanic "fame" and "bright" (''Hrōþiberhtaz''). Compare Old Dutch ''Robrecht'' and Old High German ''Hrodebert'' (a compound of '' Hruod'' ( non, Hróðr) "fame, glory, honour, praise, renown" and ''berht'' "bright, light, shining"). It is the second most frequently used given name of ancient Germanic origin. It is also in use as a surname. Another commonly used form of the name is Rupert. After becoming widely used in Continental Europe it entered England in its Old French form ''Robert'', where an Old English cognate form (''Hrēodbēorht'', ''Hrodberht'', ''Hrēodbēorð'', ''Hrœdbœrð'', ''Hrœdberð'', ''Hrōðberχtŕ'') had existed before the Norman Conquest. The feminine version is Roberta. The Italian, Portuguese, and Spanish form is Roberto. Robert is also a common name in many Germanic languages, including English, German, Dutch, Norwegian, Swedish, Scots, Danish, and Icelandic. It can be use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University Press
Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by Henry VIII of England, King Henry VIII in 1534, it is the oldest university press A university press is an academic publishing house specializing in monographs and scholarly journals. Most are nonprofit organizations and an integral component of a large research university. They publish work that has been reviewed by schola ... in the world. It is also the King's Printer. Cambridge University Press is a department of the University of Cambridge and is both an academic and educational publisher. It became part of Cambridge University Press & Assessment, following a merger with Cambridge Assessment in 2021. With a global sales presence, publishing hubs, and offices in more than 40 Country, countries, it publishes over 50,000 titles by authors from over 100 countries. Its publishing includes more than 380 academic journals, monographs, reference works, school and uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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