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

About the Image

Id:eso9905b
Type:Chart
Release date:2 February 1999
Related releases:eso9905
Size:2936 x 3008 px

About the Object

Name:s50, Spectrum
Type:Milky Way : Star
Category:Stars

Image Formats

Large JPEG
867.2 KB
Screensize JPEG
186.3 KB

Colours & filters

BandTelescope
Optical
R
ESO 1.52-metre telescope
FEROS

Exposure time: 5400s

 

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