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).

Créditos:

ESO

Sobre a imagem

Id:eso0425c
Tipo:Mapa
Data de divulgação:17 de Agosto de 2004
Notícias relacionadas:eso0425
Tamanho:800 x 792 px

Sobre o objeto

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

Formatos de imagens

JPEG grande
130,9 KB

Cores e filtros

BandaComprimento de ondaTelescópio
Ultravioleta
U
313 nmVery Large Telescope
UVES