Lithium in a metal-poor Halo Star

This image shows a spectrum of the metal-poor star G271-162 in the red spectral region around the Li-line at 671 nm that is used to derive the lithium isotopic ratio. The wavelengths of the doublet components of the two isotopes are indicated. The total exposure time was 3 hours and the S/N-ratio in the continuum region is above 600 - a most satisfactory result considering that the CCD fringing amplitude is more than 20% at these wavelengths.

Crediti:

ESO

Riguardo l'immagine

Identificazione:eso0013b
Tipo:Mappa
Data di rilascio:06 Aprile 2000
Notizie relative:eso0013
Grandezza:800 x 602 px

Riguardo all'oggetto

Nome:G271-162
Tipo:Milky Way : Star
Categoria:Stars

Formati delle immagini

JPEG grande
58,3 KB

Colori e filtri

BandaTelescopio
Ottico
R
Very Large Telescope
UVES