- Hertzsprung-Russell diagram
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a plot of the absolute magnitude of stars versus their colour (or surface temperature); shows the main sequence of stars plus the white dwarfs and red giants
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Hertzsprung-Russell diagram
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Hertzsprung–Russell diagram — Hertzsprung–Russell diagram[1] with 22,000 stars plotted from the Hipparcos catalog and 1,000 from the Gliese catalog of nearby stars. Stars tend to fall only into certain regions of the diagram. The most predominant is the diagonal, going from… … Wikipedia
Hertzsprung-Russell diagram — The Hertzsprung Russell diagram (usually referred to by the abbreviation H R diagram or HRD, also known as a colour magnitude diagram, or CMD) shows the relationship between absolute magnitude, luminosity, classification, and effective… … Wikipedia
hertzsprung-russell diagram — ˈhertˌspru̇ŋˈrəsəl noun Usage: usually capitalized H&R Etymology: after Ejnar Hertzsprung died 1967 Dan. astronomer and Henry Norris Russell died 1957 American astrophysicist : spectrum luminosity diagram * * * /hairt sproong rus euhl/, Astron.… … Useful english dictionary
Hertzsprung-Russell diagram — /hairt sproong rus euhl/, Astron. the graph showing the absolute magnitude plotted against the surface temperature for a group of stars. Also called H R diagram. [after Danish astronomer Ejnar Hertzsprung (1873 1967) and H. N. RUSSELL, who… … Universalium
Hertzsprung–Russell diagram — ▪ astronomy in astronomy, graph in which the absolute magnitudes (intrinsic brightness) of stars are plotted against their spectral types. Of great importance to theories of stellar evolution, it evolved from charts begun in 1911 by the Danish… … Universalium
Hertzsprung-Russell diagram — /ˌhɜtsprʌŋ ˌrʌsəl ˈdaɪəgræm/ (say .hertsprung .rusuhl duyuhgram) noun a graph in which the absolute luminosity of a star is plotted against its spectral type (an indication of its temperature). The theory of stellar evolution has been derived… …
Hertzsprung - Russell diagram — … Useful english dictionary
Hertzsprung–Russell diagram — … Useful english dictionary
Hertzsprung-Russell diagrammet — Diagram som viser sammenhængen mellem stjernernes spektraltype og absolutte lysstyrke … Danske encyklopædi
Russell — is an English, Irish, or Scottish name derived from old French, the old French word for Red was rouse ; hence the carry over from French the English Russell, the name also derives from the animal, the fox. Its uses include:People*Arthur Russell… … Wikipedia
