Chemical abundances of LINER galaxies – nitrogen abundance estimations

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dc.contributor.authorOliveira Junior, Celso B.
dc.contributor.authorKrabbe, Angela Cristina
dc.contributor.authorDors Junior, Oli Luiz
dc.contributor.authorZinchenko, Igor
dc.contributor.authorHernandez-Jimenez, Jose Andres
dc.contributor.authorCardaci, Mónica Viviana
dc.contributor.authorHagele, Guillermo F.
dc.contributor.authorIlha, Gabriele da Silva
dc.date.accessioned2025-01-30T15:24:20Z
dc.date.available2025-01-30T15:24:20Z
dc.date.issued22024
dc.description.abstractIn this work, we investigated the nitrogen and oxygen abundances in a sample of galaxies with Low Ionization Nuclear Emission Regions (LINERs) in their nucleus. Optical spectroscopic data (3600 – 10 000 Å) of 40 LINERs from the Mapping Nearby Galaxies (MaNGAs) survey were considered. Only objects classified as retired galaxies, that is, whose main ionization sources are post-Asymptotic Giant Branch (pAGB) stars, were selected. The abundance estimates were obtained through detailed photoionization models built with the CLOUDY code to reproduce a set of observational emission line intensities ratios of the sample. Our results show that LINERs have oxygen and nitrogen abundances in the ranges of 8.0 􏰀 12 + log(O/H) 􏰀 9.0 (mean value 8.74 ± 0.27) and 7.6 􏰀 12 + log(N/H) 􏰀 8.5 (mean value 8.05 ± 0.25), respectively. About 70 per cent of the sample have oversolar O/H and N/H abundances. Our abundance estimates are in consonance with those for Seyfert 2 nuclei and H II regions with the highest metallicity, indicating that these distinct object classes show similar enrichment of the interstellar medium (ISM). The LINERs in our sample are located in the higher N/O region of the N/O versus O/H diagram, showing an unexpected negative correlation between these two parameters. These results suggest that these LINERs mainly exhibit a secondary nitrogen production and could be acting some other mechanisms that deviate them from the usual theoretical secondary nitrogen production curve and the H II regions observations. However, we did not find any evidence in our data able to support the literature suggested mechanisms. Alternatively, our results show that LINERs do not present any correlation between the N/O abundances and the stellar masses of the hosting galaxies.
dc.description.physical14 p.
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.uriFAPESP 2019/11934, FAPESP 2020/16416-5, FAPESP 2021/08920-8, FAPESP 2022/11799-9
dc.format.mimetypePDF
dc.identifier.affiliationUniversidade do Vale do Paraíba
dc.identifier.affiliationLudwig Maximilians Universität
dc.identifier.affiliationInstituto de Astrofísica de La Plata (CONICET–UNLP)
dc.identifier.affiliationUniversidade de São Paulo
dc.identifier.bibliographicCitationOliveira, C. B. et al. Chemical abundances of LINER galaxies – nitrogen abundance estimations. Monthly Notices of the Royal Astronomical Society, v. 531, n. 1, p. 199–212, 2024.
dc.identifier.doi10.1093/mnras/stae1172
dc.identifier.urihttps://repositorio.univap.br/handle/123456789/533
dc.language.isoen_US
dc.publisherRoyal Astronomical Society
dc.rights.holderCelso B. Oliveira Junior
dc.rights.holderAngela Cristina Krabbe
dc.rights.holderOli Luiz Dors Junior
dc.rights.holderIgor Zinchenko
dc.rights.holderJose Andres Hernandez Jimenez
dc.rights.holderMónica Viviana Cardaci
dc.rights.holderGuillermo F. Hagele
dc.rights.holderGabriele da Silva Ilha
dc.subject.keywordGalaxies
dc.subject.keywordNitrogen abundance
dc.titleChemical abundances of LINER galaxies – nitrogen abundance estimations
dc.typeArtigos de Periódicos

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