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The Hertzsprung- Russell diagram , or the H-R diagram , is a graph which plots a star’s brightness versus its color. This very-useful graphic was developed around 1910 by Danish astronomer Ejnar Hertzsprung and American astronomer Henry Norris Russell . The H-R diagram groups stars into four major classes, and shows stellar evolution: how ...
Figure 18.13 Hertzsprung (1873–1967) and Russell (1877–1957). (a) Ejnar Hertzsprung and (b) Henry Norris Russell independently discovered the relationship between the luminosity and surface temperature of stars that is summarized in what is now called the H–R diagram.
Ejnar Hertzsprung (8. oktober 1873–21. oktober 1967) var ein dansk kjemikar og astronom.. Han var professor i Göttingen 1909–1914, observator ved observatoriet i Potsdam 1914–1919, professor i Leyden 1920–1945 og direktør for Leyden observatorium 1935–1945.
Ejnar Hertzsprung (8. října 1873 Kodaň – 21. října 1967 Roskilde) byl dánský astronom, který se zabýval vývojem a vznikem hvězd. Život [ editovat | editovat zdroj ] Narodil se v Kodani a studoval na kodaňské polytechnice.
Ejnar Hertzsprung var søn af direktør i Statsanstalten for Livsforsikring Severin Hertzsprung og hustru Henriette f. Frost. Han blev student fra Metropolitanskolen 1892, cand.polyt. med speciale som kemiingeniør 1898 og var kemiker i Sankt Petersborg 1899 - 1901. Han studerede dernæst på professor Wilhelm Ostwalds laboratorium i Leipzig ...
The diagram became known as the Hertzsprung-Russell (or "H-R") diagram. By studying H-R diagrams, later astronomers figured out the life cycles of stars. In this project, you will make your own Hertzsprung-Russell diagrams. You will learn what the various points represent, and you will also learn some of the difficulties in making H-R diagrams.
Stella gigante. In astronomia, una stella gigante è una stella di grandi dimensioni e luminosità, a parità di temperatura superficiale, [1] che si colloca nella parte alta del diagramma Hertzsprung-Russell e corrispondono alla classe di luminosità II e III. [2] Le grandi dimensioni non implicano necessariamente una grande massa: la densità ...
