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.

Telif:

ESO

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Kimlik:eso0634b
Tür:Grafik
Yayın tarihi:12 Eylül 2006
Bağlantılı bültenler:eso0634
Boyut:2330 x 1106 px

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Adı:Milky Way
Tür:Milky Way : Galaxy
Kategori:Galaxies

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