Metals in Sagittarius dwarf galaxy

This image shows a tiny portion of the spectrum of a giant star (V = 18.2) in the Sagittarius Dwarf galaxy, as recorded by UVES. A total integration time of 3 hours covered the spectral range 480 - 680 nm and provided a S/N-ratio of approx. 40 at 600 nm. The figure shows transitions due to FeI, CaI and BaII and illustrates the wealth of different elements that can be accurately measured in an object as faint as this one.

Mynd/Myndskeið:

ESO

Um myndina

Auðkenni:eso0013d
Tegund:Athuganir
Útgáfudagur:6. apríl 2000
Tengdar fréttatilkynningar:eso0013
Stærð:800 x 613 px

Um fyrirbærið

Nafn:Sagittarius Dwarf Galaxy
Tegund:Local Universe : Galaxy : Type : Elliptical
Local Universe : Galaxy : Size : Dwarf
Fjarlægð:80000 ljósár
Flokkur:Galaxies

Myndasnið

Stór JPEG
73,6 KB

Litir og síur

TíðnisviðSjónauki
Sýnilegt
V
Very Large Telescope
UVES