UVES spectrum of the Sun

The image shows part of a test spectrum of the Sun, taken by UVES in the Laboratory in Garching on October 19, 1998. The bright (nearly) horizontal lines correspond to adjacent, small wavelength ranges of the solar spectrum. Within these, many vertical dark lines indicate the presence of certain elements in the solar atmosphere, for instance gaseous hydrogen or iron. From the line shapes and their depths, it is possible to determine the temperature, pressure and chemical abundances of this gas. Small shifts in wavelength of such lines, when measured in other stars, indicate velocity changes due to the Doppler effect that may be caused by invisible planets circling the observed star.

Crédit:

ESO

À propos de l'image

Identification:eso9854c
Type:Observation
Date de publication:18 novembre 1998
Communiqués de presse en rapport:eso9854
Taille:2904 x 2319 px

À propos de l'objet

Nom:Spectrum, Sun
Type:Solar System : Star
Catégorie:Stars

Image Formats

Grand JPEG
2,3 Mio
JPEG taille écran
324,1 Kio

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1024x768
311,2 Kio
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Couleurs & filtres

DomaineTélescope
Very Large Telescope
UVES