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).

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso0425c
Tipo:Mappa
Data di rilascio:17 Agosto 2004
Notizie relative:eso0425
Grandezza:800 x 792 px

Riguardo all'oggetto

Nome:A2111, A228, HD 218502
Tipo:Milky Way : Star
Categoria:Stars

Formati delle immagini

JPEG grande
130,9 KB

Colori e filtri

BandaLunghezza d'ondaTelescopio
Ultravioletto
U
313 nmVery Large Telescope
UVES