Oxygen abundances in the most oxygen-rich spiral galaxies

Details Oxygen abundances in the most oxygen-rich spiral galaxies Oxygen abundances in the most oxygen-rich spiral galaxies

2006-01-06

arxiv.org/abs/astro-ph/0601122v1

Mon.Not.Roy.Astron.Soc. 367 (2006) 1139-1146

Astronomy and Astrophysics

Astrophysics

8 pages, 7 postscript figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2006.10033.x

Oxygen abundances in the spiral galaxies expected to be richest in oxygen are estimated. The new abundance determinations are based on the recently discovered ff-relation between auroral and nebular oxygen line fluxes in HII regions. We find that the maximum gas-phase oxygen abundance in the central regions of spiral galaxies is 12+log(O/H)~8.75. This value is significantly lower than the previously accepted value. The central oxygen abundance in the Milky Way is similar to that in other large spirals.

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