2 papers
astro-ph.GA2024
Characterizing chemical abundance ratios in extremely metal-poor star-forming galaxies in DESI EDR
I. A. Zinchenko, M. Sobolenko, J. M. Vilchez +1
We present a search for galaxies in the local Universe with extremely low oxygen abundance, that is, more than 25 times lower than solar, which corresponds to 12 + log(O/H) < 7.3.…
astro-ph.GA2021
The dependence of the gradients of oxygen and nitrogen-to-oxygen on stellar age in MaNGA galaxies
I. A. Zinchenko, J. M. Vilchez, E. Perez-Montero +3
We derive the oxygen abundance (O/H), the nitrogen-to-oxygen (N/O) abundance ratio, and their corresponding radial gradients for a sample of 1431 galaxies from MaNGA DR15 survey us…