Lithium in giant Star 850 in stellar cluster Be21

FEROS obtained two spectra (each of 90 min exposure) of S50, both showing this strong Lithium line and thus proving that it cannot have been caused by an instrumental effect. These spectra also illustrate the great amount of information that may be obtained in each exposure with FEROS - the shown spectral interval is just 1/280 of the total range recorded. The (visual) magnitude of S50 is 15.6, i.e., about 7,000 times fainter than what can be seen with the unaided eye.

Crédit:

ESO

À propos de l'image

Identification:eso9905b
Type:Graphique
Date de publication:2 février 1999
Communiqués de presse en rapport:eso9905
Taille:2936 x 3008 px

À propos de l'objet

Nom:s50, Spectrum
Type:Milky Way : Star
Catégorie:Stars

Formats des images

Grand JPEG
867,2 Kio
JPEG taille écran
186,3 Kio

Couleurs & filtres

DomaineTélescope
Visible
R
ESO 1.52-metre telescope
FEROS

Exposure time: 5400s