Abundance determinations in the dIrr galaxy Leo A. Issue Volume 14:Issue S344(2019) (August 2018)

• Record Type: Journal Article
• Authors: Ruiz-Escobedo, Francisco; Peña, Miriam; Hernández-Martínez, Liliana; García-Rojas, Jorge
• Editors: McQuinn, Kristen B. W.; Stierwalt, Sabrina
• Is Part Of: Proceedings of the International Astronomical Union. Volume 14:Issue S344(2019)
• Page Start: 217
• Page End: 219
• Publication Date: 2018-08
• Subjects: galaxies: irregulars, -- galaxies : individual (Leo A), -- galaxies: ISM, -- ISM: abundances, -- planetary nebulae: general; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921318005252
• Languages: English
• ISSNs: 1743-9213

Abstract

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 (T e 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.