Abundance determinations in the dIrr galaxy Leo A
Abstract
Physical conditions and chemical abundances of two H II regions and a planetary nebula in the dIrr galaxy Leo A are presented. These determinations were performed using the direct method (Te measured) and the ONS method. We also constructed photoionization models for the three nebulae to determine the abundances and to analyse the ionizing stars. The O abundance was determined to be 12+log(O/H) = 7.4+/-0.2 in all cases.
- Publication:
-
Dwarf Galaxies: From the Deep Universe to the Present
- Pub Date:
- October 2019
- DOI:
- 10.1017/S1743921318005252
- Bibcode:
- 2019IAUS..344..217R
- Keywords:
-
- galaxies: irregulars;
- galaxies : individual (Leo A);
- galaxies: ISM;
- ISM: abundances;
- planetary nebulae: general