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).

Bildnachweis:

ESO

Über das Bild

ID:eso0425c
Typ:Aufsuchkarte
Veröffentlichungsdatum:17. August 2004
Dazugehörige Veröffentlichungen:eso0425
Größe:800 x 792 px

Über das Objekt

Name:A2111, A228, HD 218502
Typ:Milky Way : Star
Kategorie:Stars

Bildformate

Großes JPEG
130,9 KB

Farben & Filter

SpektralbereichWellenlängeTeleskop
Ultraviolett
U
313 nmVery Large Telescope
UVES