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.

Kilde:

ESO

Om bildet

ID:eso0634b
Type:Diagram
Publiseringsdato:12. september 2006
Relaterte pressemeldinger:eso0634
Størrelse:2330 x 1106 px

Om objektet

Navn:Milky Way
Type:Milky Way : Galaxy
Kategori:Galaxies

Bildeformater

Stor JPEG
281,1 KB
Medium JPEG
97,5 KB

 

Se også