Erik Holmberg (13 November 1908 – 1 February 2000) was a Swedish astronomer and cosmologist. He is most famous for his work in the effects of interacting galaxies. This research showed that galaxies that came near each other would likely combine to form a larger galaxy.[1]
In 1908, Holmberg was born to Malcolm and Anna Holmberg in Skillingaryd, Sweden. In 1947 he married Martha Asdahl. They had one daughter named Osa, who was born in 1953.[2] He died on 1 February 2000 in Gothenburg, at the age of 91.
Scientific work
In 1941, Holmberg performed arguably the first N-body simulation on the dynamics of interacting galaxies.[3] In order to simulate the effect, he constructed an array of 37 lightbulbs. Using photocells, he measured the simulated force of gravity. Over time, the galaxies moved closer toward each other. He also concluded in a later experiment that elliptical galaxies are generally older than spiral galaxies, among other discoveries.[4] The Holmberg radius, a measure for the size of a galaxy on the sky, is named after him. The Holmberg effect is also named after his observation that the satellite galaxies of a disk galaxy tend to be located along the disk galaxy minor axis.[5] The evidences of such effect remain however debated.[6]
^Holmberg, Erik (1941). "On the Clustering Tendencies among the Nebulae. II. a Study of Encounters Between Laboratory Models of Stellar Systems by a New Integration Procedure". The Astrophysical Journal. 94 (3): 385–395. doi:10.1086/144344.
^Darling, David. "Holmberg, Erik Bertil (1908-2000)". www.daviddarling.info.
^E. Holmberg (1969). "A study of physical groups of galaxies". Arkiv för Astronomi. 5 (305–343).
^X. Kang; et al. (2007). "The Alignment between Satellites and Central Galaxies: Theory vs. Observations". MNRAS. 378: 1531–1542. doi:10.1111/j.1365-2966.2007.11902.x.
This European astronomer–related article is a stub. You can help Wikipedia by expanding it.
erik, holmberg, astronomer, erik, holmberg, november, 1908, february, 2000, swedish, astronomer, cosmologist, most, famous, work, effects, interacting, galaxies, this, research, showed, that, galaxies, that, came, near, each, other, would, likely, combine, for. Erik Holmberg 13 November 1908 1 February 2000 was a Swedish astronomer and cosmologist He is most famous for his work in the effects of interacting galaxies This research showed that galaxies that came near each other would likely combine to form a larger galaxy 1 Erik HolmbergBorn 1908 11 13 13 November 1908SwedenDied1 February 2000 2000 02 01 aged 91 Gothenburg SwedenNationalitySwedishAlma materLund UniversityKnown forEffects of interacting galaxiesScientific careerFieldsAstronomy cosmology Contents 1 Personal life 2 Scientific work 3 See also 4 ReferencesPersonal life EditIn 1908 Holmberg was born to Malcolm and Anna Holmberg in Skillingaryd Sweden In 1947 he married Martha Asdahl They had one daughter named Osa who was born in 1953 2 He died on 1 February 2000 in Gothenburg at the age of 91 Scientific work EditIn 1941 Holmberg performed arguably the first N body simulation on the dynamics of interacting galaxies 3 In order to simulate the effect he constructed an array of 37 lightbulbs Using photocells he measured the simulated force of gravity Over time the galaxies moved closer toward each other He also concluded in a later experiment that elliptical galaxies are generally older than spiral galaxies among other discoveries 4 The Holmberg radius a measure for the size of a galaxy on the sky is named after him The Holmberg effect is also named after his observation that the satellite galaxies of a disk galaxy tend to be located along the disk galaxy minor axis 5 The evidences of such effect remain however debated 6 See also EditHolmberg II Holmberg IX Holmberg 15AReferences Edit Erik Holmberg 1908 2000 www astro uu se SpringerReference Meteor www springerreference com Holmberg Erik 1941 On the Clustering Tendencies among the Nebulae II a Study of Encounters Between Laboratory Models of Stellar Systems by a New Integration Procedure The Astrophysical Journal 94 3 385 395 doi 10 1086 144344 Darling David Holmberg Erik Bertil 1908 2000 www daviddarling info E Holmberg 1969 A study of physical groups of galaxies Arkiv for Astronomi 5 305 343 X Kang et al 2007 The Alignment between Satellites and Central Galaxies Theory vs Observations MNRAS 378 1531 1542 doi 10 1111 j 1365 2966 2007 11902 x This European astronomer related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Erik Holmberg astronomer amp oldid 1114490317, wikipedia, wiki, book, books, library,
