Fig. 4.

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Milky Way model for 26Al production. Top panel: 26Al production in rings with a width of 0.1 kpc as a function of galactocentric distance. The production is displayed for a Salpeter IMF (α = 2.35) with different maximum masses and with models with and without rotation. The results were obtained taking the SFR and the radial metallicity gradient in the Milky Way into account. The dashed lines show the result when the uncertainties on the metallicity displayed in the bottom panel are considered. The integrated quantities over the whole Milky Way of 26Al are given in the legend. Middle panel: star formation rate as a function of galactocentric distance from Kubryk et al. (2015). Bottom panel: metallicity as a function of galactocentric distance from Hayden et al. (2014).
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