Beryllium Spectral Lines in Three Stars

Reproduction of a small wavelength region of the spectra obtained with the UVES spectrometer at the 8.2-m Kueyen telescope at Paranal of these stars (above), together with that of another nearby star, HD 218502, a field star in which the Beryllium lines are also visible (below). This star, however, is not a member of a cluster and its age is not well known. The achieved signal-to-noise ratios are indicated. The best-fitting synthetic spectra are show as red dots; in the spectrum of A2111, the blue dashed lines illustrate the accuracy of the fit - they correspond to a variation of the Beryllium content by approx. ± 50% (0.2 dex).

Credit:

ESO

About the Image

Id:eso0425c
Type:Chart
Release date:17 August 2004
Related releases:eso0425
Size:800 x 792 px

About the Object

Name:A2111, A228, HD 218502
Type:• Milky Way : Star
• X - Stars

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Colours & filters

BandWavelengthTelescope
Ultraviolet
U
313 nmVery Large Telescope
UVES

 

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