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.

Oikeudet:

ESO

Kuvasta

Tunnistus:eso9905b
Tyyppi:Taulukko
Julkaisupäivä:2. helmikuuta 1999
Vastaavat julkaisut:eso9905
Koko:2936 x 3008 px

Kohteesta

Nimi:s50, Spectrum
Tyyppi:Milky Way : Star
Kategoria:Stars

Kuvaformaatit

Suuri JPEG
867,2 KB
Kokoruudun JPEG
186,3 KB

Värit ja suotimet

KaistaTeleskooppi
Optinen
R
ESO 1.52-metre telescope
FEROS

Exposure time: 5400s