The oxygen abundance in the bulge

Ratio of Oxygen over Iron abundance as a function of the iron content in stars (both axis are using logarithmic scales). The green circle denotes the stars in the Bulge studied by the present astronomers, while the yellow triangles and blue crosses are previous data obtained for stars in the disc of our Galaxy. The bulge stars are clearly more oxygen-rich than disc stars, highlighting the 'genetic difference' between the bulge and disc stars.

Herkunftsnachweis:

ESO

Über das Bild

ID:eso0634b
Typ:Aufsuchkarte
Veröffentlichungsdatum:12. September 2006
Dazugehörige Veröffentlichungen:eso0634
Größe:2330 x 1106 px

Über das Objekt

Name:Milky Way
Typ:Milky Way : Galaxy
Kategorie:Galaxies

Bildformate

Großes JPEG
281,3 KB