A first glimpse at the high-productivity star factory in the galacticcenter NatureAstronomy
that were independently created and also adequate to trace the young stellar ages. We chose similar ages, a metallicity of around twice solar and a Salpeter IMF. The final value for each of the five age bins was computed by averaging over the results obtained with PARSEC and MIST models. We estimated the final uncertainties by quadratically propagating the ones independently obtained using PARSEC and MIST models.
We fitted the KLFs computed for the Sgr B1 and control regions, and also the KLF derived for the central region of the nuclear stellar disk in our previous work. We found a significantly different SFH in the Sgr B1 region, where there is a decrease of the contribution of old stars compensated by an increase of intermediate-age stars, and a significant contribution of young stars, suggesting the presence of an association of young stars.
We used PARSEC models assuming solar and 1.5 solar metallicities to assess the results in the Sgr B1 region. The results agree within the uncertainties with the obtained for twice solar metallicity using PARSEC models. The only difference is a higher contribution of the youngest stellar population for lower metallicities .
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