WebbShapley 1 (PLN 329+2.1) is a ring-type planetary nebula in the southern constellation of Norma approximately 4,900 light years distant and 8,700 years old. It was discovered by … Webb16 feb. 2012 · We present the first detailed spatiokinematical analysis and modelling of the planetary nebula Shapley 1 (Sp 1), which is known to contain a close-binary central star …

Binary stars as the key to understanding planetary nebulae

WebbShapley 1: An Annular Planetary Nebula. Bibliography. Papers, etc. Shapley’s papers are at the Harvard University Archives. There is a microfilm version of some of his papers. Other References: Historical. Berendzen, Richard, Richard Hart, & Daniel Seeley, Man Discovers the Galaxies (Science History Publications, 1976). WebbWe present the first detailed spatiokinematical analysis and modelling of the planetary nebula Shapley 1 (Sp 1), which is known to contain a close-binary central star system. Close-binary central stars have been identified as a likely source of shaping in planetary nebulae, but with little observational support to date. shrewsbury town football club address

Harlow Shapley and the Size of the Milky Way SciHi Blog

Webb11 nov. 2011 · We present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Shapley 1 (Sp 1), which is known to contain a close-binary central … WebbShapley 1 (also known as Sp 1 or PLN 329+2.1) [1] is a planetary nebula in the constellation of Norma. The nebula was discovered by the astronomer Harlow Shapley … WebbShapley’s Scientific Record. In 1920 a debate on “The Scale of the Universe” took place between two astronomers, the older and respected Heber D. Curtis, and the young and ambitious, but little known, Harlow Shapley. (1) Curtis argued that the many spirals and nebulae visible through telescopes are galaxies or universes outside the Milky ... shrewsbury town foundation