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.

Credit:

ESO

Over de afbeelding

Id:eso9905b
Type:Kaart
Publicatiedatum:2 februari 1999
Gerelateerde berichten:eso9905
Grootte:2936 x 3008 px

Over het object

Naam:s50, Spectrum
Type:Milky Way : Star
Categorie:Stars

Afbeeldingstypen

Grote JPEG
867,2 KB

Kleuren & filters

BandTelescoop
Optisch
R
ESO 1.52-metre telescope
FEROS

Exposure time: 5400s