This page describes an image Spectrum of an O-type star
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Untertitel Diagramm:
The spectrum of the O-type star HD 235673 with wavelength in nanometers on the x-axis and flux on the y-axis. The top part of the plot shows the same spectrum but with bright patches for wavelengths with high flux and dark patches for wavelengths with low flux. The colour of the line between 400 nm and 700 nm roughly corresponds to the colour the human eye would see light of that wavelength. Below 400 nm and above 700 nm, where the human eye can see little to no light, the lines are coloured blue and red respectively.
The black lines show spectral absorption lines caused by atoms and ions of different elements in the star’s atmosphere. These atoms and ions absorb at specific wavelengths, causing sharp, dark lines in the spectra. How strong these lines are depends on the temperature of the star’s atmosphere. Two stars made from the same mix of elements could have spectra with vastly different sets of lines in their spectra if they have different temperatures in their atmospheres. For O-type stars the most important features are a small number of lines caused by ionized helium. These lines are stronger in O-type stars than in cooler stars. Lines from helium atoms and hydrogen atoms also appear in the spectrum. The spectrum has more flux at the blue end of the spectrum than at the red end of the spectrum.
Quelle Diagramm: IAU OAE/SDSS/Niall Deacon.
Diagramm Übersetzungsstatus: Noch nicht bestätigt von einem Rezensenten
Erstellt mit Unterstützung von: OAE Main Office
Diagramm-Lizenz: Creative Commons Namensnennung 4.0 International (CC BY 4.0) Creative Commons Namensnennung 4.0 International (CC BY 4.0) Symbole
Ähnliche Glossarbegriffe:
O-Stern
, Spektrum
, Wellenlänge
Kategorien:
Sterne
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Verlinkte Diagramme
Spectrum of a B-type starSpectrum of an A-type star
Spectrum of an F-type star
Spectrum of a G-type star
Spectrum of a K-type star
Spectrum of an M-type star
Stellar spectral types
Stellar spectral types - bands
Auf anderen Sprachen
Englisch: Spectrum of an O-type starItalienisch: Spettro di una stella di tipo O
Französisch: Spectre d'une étoile de type O
Spanisch: Espectro de una estrella tipo O
Arabisch: طيف لنجم من النوع O
Traditionelles Chinesisch: 一顆 O 型恒星的光譜
Vereinfachtes Chinesisch: 一颗 O 型恒星的光谱
The diagram captions presented on the OAE website were written, translated and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits for our translation project here. All media file captions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE". The media files themselves may have different licenses (see above) and should be credited as listed above under "credit".
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