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Stellar Spectral Types ... Spectral characteristics offer a way to classify stars which gives information about temperature in a different way - particular absorption lines can be observed only for a certain range of temperatures because only in that range are the involved atomic energy levels populated. ... O-Type Stars...
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hyperphysics.phy-astr.gsu.edu/hbase/starlog/staspe.html
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Pages in category "Stars by spectral type" ... See Morgan-Keenan spectral classification ... Wikimedia Commons has media related to: Stars by spectral type...
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en.wikipedia.org/wiki/Category:Stars_by_spectral_type
en.wikipedia.org/wiki/Category:Stars_by_spectral_type
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Java Applet: Galactic Rotation Curves ... The blue line on the graph is th spectrum of a star of spectral type O%, luminosity class V. By clicking on the button at the right of the "O5V" text you can select another type from the pop-up list.
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www.jb.man.ac.uk/distance/life/sample/java/spectype/spe...
www.jb.man.ac.uk/distance/life/sample/java/spectype/specplot.htm
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Notes about spectral type O stars. ... Keywords: Spectral type O ... O is the earliest spectral type, radiating strongly at short wavelengths; thus their light appears bluish to the human eye.
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www.peripatus.gen.nz/Astronomy/SpeTypO.html
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The HR Diagram: ... ; Click hereto view HR diagram without text. ... ; Intro; HR Diagram; Wolf-Rayet Stars; O Stars; B Stars; A Stars; F Stars; G Stars; K Stars; M Stars; S Stars; Carbon Stars; L Stars; Brown Dwarfs; White Dwarfs; Neutron Stars;
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cfa-www.harvard.edu/~pberlind/atlas/atframes.html
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Stars of spectral type A are bright white. Due to their high mass, they are energetic and several times brighter than our sun. But their reserves of hydrogen fuel are depleted even more quickly than for stars of type F, so biological evolution is severely restricted here.
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www.exoplaneten.de/sirius/english.html
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Type of Star: ... Spectral Class: ... Tau Ceti is such a G-type, sunlike star, devoid of stellar companions and close enough for detailed studies.
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www.exoplaneten.de/tauceti/english.html
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From hottest to coolest they are: O, B, A, F, G, K, and M. Each class is characterized by the appearance of certain types of spectral lines and is further subdivided into 10 sub-classes numbered from 0 to 9. The Sun, for example, is assigned the spectral class G2 in ... type features of spectrum surface temp. (°C) color...
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www.daviddarling.info/encyclopedia/S/spectype.html
www.daviddarling.info/encyclopedia/S/spectype.html
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The Hertzsprung -Russell (H-R) Diagram is a graph that plots stars color (spectral type or surface temperature) vs. its luminosity (intrinsic brightness or absolute magnitude). On it, astronomers plot stars' color, temperature, luminosity, spectral type, and evolutionary stage.
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www.enchantedlearning.com/subjects/astronomy/stars/star...
www.enchantedlearning.com/subjects/astronomy/stars/startypes.shtml
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