Knut Emil Lundmark 14 juin 1889 - 23 avril 1958 était un astronome suédois spécialisé dans l'étude des galaxies, ou « nébuleuses », comme on les appelait au début de sa carrière scientifique avant que leur vraie nature ne soit comprise.

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  • Knut Emil Lundmark 14 juin 1889 - 23 avril 1958 était un astronome suédois spécialisé dans l'étude des galaxies, ou « nébuleuses », comme on les appelait au début de sa carrière scientifique avant que leur vraie nature ne soit comprise.
  • Knut Emil Lundmark (14 June 1889 – 23 April 1958) was a Swedish astronomer, professor of astronomy and head of the observatory at Lund University from 1929 to 1955.Lundmark received his astronomical education at the observatory of Uppsala University. His dissertation (1920) was titled: The relations of the globular clusters and spiral nebulae to the stellar system. In the 1920s he worked at several observatories in the USA, mainly Lick Observatory and Mount Wilson Observatory.Knut Lundmark was one of the pioneers in the modern study of the galaxies and their distances. He was one of the first to suspect that the galaxies are remotestellar systems at vast distances and not nearby objects belonging to our own galaxy, the Milky Way. In 1919 he measured the distance to M31 - the Andromeda Galaxy, to 650,000 light years (about a fourth of the present day value) using magnitudes of novae found in M31 and comparing them to nearby ones with known distances. Lundmark's work contributed to the later famous Great Debate.Lundmark also studied the light distribution in the galaxies, and discovered that the distribution could only properly be explained if the galaxies contained vast amounts of light-blocking dark clouds.He was the leading writer of popular astronomy among the professional astronomers in Sweden from the 1930s and onwards. He also often appeared in the Swedish national radio with programs on popular astronomy and the history of science. He made generations of Swedes fascinated and interested in astronomy.The crater Lundmark on the Moon was named after him. The Wolf-Lundmark-Melotte Galaxy is named after Lundmark, Max Wolf and Philibert Jacques Melotte.
  • Knut Emil Lundmark (14 de junho de 1889 - 23 de abril de 1958) foi um astrônomo sueco. Foi também professor de astronomia e diretor do observatório astronômico da Universidade de Lund entre 1929 e 1955. Formou-se em astronomia no observatório da Universidade de Uppsala. Sua dissertação de mestrado, de 1920, intitulava-se As relações dos aglomerados estelares e nebulosas espirais para o sistema estelar. Trabalhou na década de 1920 nos Estados Unidos nos observatórios Lick e Monte Wilson.Foi um dos pioneiros no estudo moderno de galáxias e suas distâncias. Foi um dos primeiros a suspeitar que tais objetos são na realidade sistemas estelares remotos, situados a uma grande distância da Via-Láctea, e não objetos pertecentes a nossa galáxia. Presumiu a distância da galáxia de Andrômeda em cerca de 650 000 anos-luz (cerca de um quarto da distância verdadeira) comparando o brilho de novas daquela galáxia com as novas de nossa própria galáxia. Participou do Grande Debate, uma discussão sobre a natureza das galáxias, suas distâncias e o tamanho do universo.Também estudou a distribuição de luz nas galáxias, concluindo que essa distribuição apenas poderia ser explicada se houvessem enormes quantidades de nuvens cósmicas escuras que bloqueassem a luz galáctica.Foi o principal incentivador da astronomia popular na Suécia na década de 1930 e nos anos seguintes. Para tal, participou de vários programas de rádio, falando de astronomia e história da ciência.A cratera Lunar "Lundmark" e a galáxia Wolf-Lundmark-Melotte são batizadas em sua homenagem, a última também homenageando Max Wolf e Philibert Jacques Melotte.== Referências ==
  • Knut Emil Lundmark (ur. 14 czerwca 1889 w Älvsbyn, zm. 23 kwietnia 1958 w Lund) – szwedzki astronom.Był jednym z pionierów współczesnej astronomii pozagalaktycznej. Był zwolennikiem poglądu, że wszechświat zawiera znacznie więcej galaktyk, niż tylko jedną Drogę Mleczną. Zmierzył odległość do Galaktyki Andromedy na 650 tysięcy lat świetlnych (około 1/4 obecnie wyznaczonej odległości).Planetoida (1334) Lundmarka została nazwana jego nazwiskiem.
  • Knut Emil Lundmark (Aussprache: [ˌknʉːt ˈlɵnːdmaɹk], * 14. Juni 1889 in Älvsbyn, Norrbottens län; † 23. April 1958 in Lund) war ein schwedischer Astronom, und von 1929 bis 1955 Astronomieprofessor und Direktor des Alten Observatoriums Lund.Lundmark studierte Astronomie an der Sternwarte Uppsala. Seine 1920 geschriebene Doktorarbeit behandelte The relations of the globular clusters and spiral nebulae to the stellar system(Die Beziehungen der Kugelsternhaufen und der Spiralnebel zum Sternsystem, d. h. zur Milchstraße). In den zwanziger Jahren arbeitete er zeitweise an verschiedenen Sternwarten in den USA, dem Lick-Observatorium und dem Mount-Wilson-Observatorium.Knut Lundmark war einer der Pioniere der Untersuchung der Galaxien und ihrer Entfernungen. Er war als einer der ersten der Ansicht, dass die Galaxien weit entfernte Sternsysteme sind und in ihrer Größe der Milchstraße vergleichbar sind.Er bestimmte die Entfernung des Andromedanebels aufgrund des Auftretens von Novae, deren Helligkeiten er mit den Helligkeiten der Novae der Milchstraße verglich.In den 1930er Jahren war er auch als populärer Schriftsteller über astronomische Themen aktiv, und nahm auch an Rundfunksendungen teil. Er war 1954 einer der Unterzeichner des Dokuments, das schließlich 1962 zur Gründung der Europäischen Südsternwarte (ESO) führte.Der Mondkrater Lundmark ist nach ihm benannt, ebenso der Asteroid (1334) Lundmarka. Die Wolf-Lundmark-Melotte-Galaxie ist ebenfalls nach ihm, nach Max Wolf und Philibert Jacques Melotte benannt.
  • Кнут Эмиль Лундмарк (швед. Knut Emil Lundmark,1889 −1958) — шведский астроном.
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  • Knut Emil Lundmark 14 juin 1889 - 23 avril 1958 était un astronome suédois spécialisé dans l'étude des galaxies, ou « nébuleuses », comme on les appelait au début de sa carrière scientifique avant que leur vraie nature ne soit comprise.
  • Knut Emil Lundmark (ur. 14 czerwca 1889 w Älvsbyn, zm. 23 kwietnia 1958 w Lund) – szwedzki astronom.Był jednym z pionierów współczesnej astronomii pozagalaktycznej. Był zwolennikiem poglądu, że wszechświat zawiera znacznie więcej galaktyk, niż tylko jedną Drogę Mleczną. Zmierzył odległość do Galaktyki Andromedy na 650 tysięcy lat świetlnych (około 1/4 obecnie wyznaczonej odległości).Planetoida (1334) Lundmarka została nazwana jego nazwiskiem.
  • Кнут Эмиль Лундмарк (швед. Knut Emil Lundmark,1889 −1958) — шведский астроном.
  • Knut Emil Lundmark (Aussprache: [ˌknʉːt ˈlɵnːdmaɹk], * 14. Juni 1889 in Älvsbyn, Norrbottens län; † 23. April 1958 in Lund) war ein schwedischer Astronom, und von 1929 bis 1955 Astronomieprofessor und Direktor des Alten Observatoriums Lund.Lundmark studierte Astronomie an der Sternwarte Uppsala.
  • Knut Emil Lundmark (14 de junho de 1889 - 23 de abril de 1958) foi um astrônomo sueco. Foi também professor de astronomia e diretor do observatório astronômico da Universidade de Lund entre 1929 e 1955. Formou-se em astronomia no observatório da Universidade de Uppsala. Sua dissertação de mestrado, de 1920, intitulava-se As relações dos aglomerados estelares e nebulosas espirais para o sistema estelar.
  • Knut Emil Lundmark (14 June 1889 – 23 April 1958) was a Swedish astronomer, professor of astronomy and head of the observatory at Lund University from 1929 to 1955.Lundmark received his astronomical education at the observatory of Uppsala University. His dissertation (1920) was titled: The relations of the globular clusters and spiral nebulae to the stellar system.
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  • Knut Lundmark
  • Knut Lundmark
  • Knut Lundmark
  • Knut Lundmark
  • Knut Lundmark
  • Лундмарк, Кнут Эмиль
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