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Universalium. 2010.
Main sequence — A Hertzsprung Russell diagram plots the actual brightness (or absolute magnitude) of a star against its color index (represented as B V). The main sequence is visible as a prominent diagonal band that runs from the upper left to the lower right.… … Wikipedia
Star — For other uses, see Star (disambiguation) … Wikipedia
Red giant — A red giant is a luminous giant star of low or intermediate mass (roughly 0.5 ndash;10 solar masses) that is in a late phase of stellar evolution. The outer atmosphere is inflated and tenuous, making the radius immense and the surface temperature … Wikipedia
Convection zone — An illustration of the structure of the Sun: 1. Core 2. Radiative zone 3. Convective zone 4. Photosphere 5. Chromosphere 6. Corona 7. Sunspot 8. Granules 9. Prominence … Wikipedia
Habitable Zone — Als habitable Zone (auch Lebenszone oder veraltet Ökosphäre, missverständlich auch bewohnbare Zone) bezeichnet man im Allgemeinen den Abstandsbereich, in dem sich ein Planet von seinem Zentralgestirn aufhalten muss, damit Wasser dauerhaft in… … Deutsch Wikipedia
Hauptreihenstern — Dieser Artikel behandelt den Begriff Hauptreihe im astronomischen Sinn; für Hauptreihe in der Chemie siehe Periodensystem. Hertzsprung Russell Diagramm Spektralklasse … Deutsch Wikipedia
subdwarf star — sub|dwarf «SUHB DWRF», noun, or subdwarf star, any star of a group lying just below the main sequence in the Russell diagram, being relatively small and dim when compared to a mainsequence star of the same spectral class … Useful english dictionary
sub|dwarf — «SUHB DWRF», noun, or subdwarf star, any star of a group lying just below the main sequence in the Russell diagram, being relatively small and dim when compared to a mainsequence star of the same spectral class … Useful english dictionary
subgiant star — sub|gi|ant «SUHB JY uhnt», noun, or subgiant star, any star of a group lying just above the main sequence in the Russell diagram, being relatively large and bright when compared to a mainsequence star of the same spectral class … Useful english dictionary
sub|gi|ant — «SUHB JY uhnt», noun, or subgiant star, any star of a group lying just above the main sequence in the Russell diagram, being relatively large and bright when compared to a mainsequence star of the same spectral class … Useful english dictionary
