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.

Credit:

ESO

Over de afbeelding

Id:eso9854c
Type:Observatie
Publicatiedatum:18 november 1998
Gerelateerde berichten:eso9854
Grootte:2904 x 2319 px

Over het object

Naam:Spectrum, Sun
Type:Solar System : Star
Categorie:Stars

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2,3 MB

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Kleuren & filters

BandTelescoop
Very Large Telescope
UVES