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.

Herkunftsnachweis:

ESO

Über das Bild

ID:eso9905b
Typ:Aufsuchkarte
Veröffentlichungsdatum:2. Februar 1999
Dazugehörige Veröffentlichungen:eso9905
Größe:2936 x 3008 px

Über das Objekt

Name:s50, Spectrum
Typ:Milky Way : Star
Kategorie:Stars

Bildformate

Großes JPEG
867,2 KB

Farben & Filter

SpektralbereichTeleskop
Optisch
R
ESO 1.52-metre telescope
FEROS

Exposure time: 5400s