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.

Bildnachweis:

ESO

Über das Bild

ID:eso0013d
Typ:Beobachtung
Veröffentlichungsdatum:6. April 2000
Dazugehörige Veröffentlichungen:eso0013
Größe:800 x 613 px

Über das Objekt

Name:Sagittarius Dwarf Galaxy
Typ:Local Universe : Galaxy : Size : Dwarf
Local Universe : Galaxy : Type : Elliptical
Entfernung:80000 Lichtjahre
Kategorie:Galaxies

Bildformate

Großes JPEG
73,6 KB

Farben & Filter

SpektralbereichTeleskop
Optisch
V
Very Large Telescope
UVES