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.

Källa:

ESO

Om bilden

ID:eso9905b
Typ:Diagram
Publiceringsdatum:2 februari 1999
Relaterade pressmeddelanden:eso9905
Storlek:2936 x 3008 px

Om objektet

Namn:s50, Spectrum
Typ:Milky Way : Star
Kategori:Stars

Bildformat

Stor jpeg
867,2 kB
Skärmstor jpeg
186,3 kB

Färger och filter

BandTeleskop
Synligt ljus
R
ESO 1.52-metre telescope
FEROS

Exposure time: 5400s