Metallicity gradients in local field star-forming galaxies: Insights on inflows, outflows, and the coevolution of gas, stars and metals
We present metallicity gradients in 49 local field star-forming galaxies. We derive gasphase oxygen abundances using two widely adopted metallicity calibrations based on the [O III]/Hβ, [NII]/Hα, and [N II]/[O II] line ratios. The two derived metallicity gradients are usually in good agreement within ±0.14 dexR25 -1 (R25 is the B-band iso-photoal radius), but the metallicity gradients can differ significantly when the ionization parameters change systematically with radius. We investigate the...[Show more]
|Collections||ANU Research Publications|
|Source:||Monthly Notices of the Royal Astronomical Society|
|Access Rights:||Open Access|
|01_Ho_Metallicity_gradients_in_local_2015.pdf||4.76 MB||Adobe PDF|
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