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).
Källa:ESO
Om bilden
ID: | eso0425c |
Typ: | Diagram |
Publiceringsdatum: | 17 augusti 2004 |
Relaterade pressmeddelanden: | eso0425 |
Storlek: | 800 x 792 px |
Om objektet
Färger och filter
Band | Våglängd | Teleskop |
---|---|---|
Ultraviolett U | 313 nm | Very Large Telescope UVES |