Nitrogen evolution in the halo, thick disc, thin disc, and bulge of the Galaxy

We study the evolution of nitrogen in Galactic halo, thick disc, thin disc and bulge by comparing detailed chemical models with recent observations. The used this work have already been constrained to explain abundance patterns $\alpha$-elements metallicity distribution functions stars; here, we adopt them investigate origin N different components. First, consider sets yields importance various channels proposed for production. Secondly, apply reference both discs bulge. conclude that: i) primary produced rotating massive stars is required reproduce plateau log(N/O) [N/Fe] ratios at low metallicity, as well secondary production from low- intermediate-mass data disc. ii) parallel model can provide a good explanation discs; confirm that has evolved much faster than agreement results other elements. iii) Finally, present new predictions bulge, show observations be explained if rotate fast during earliest phases evolution, findings pattern carbon.