Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/211152
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Chemical abundances of Seyfert 2 AGNs - I. Comparing oxygen abundances from distinct methods using SDSS |
Autor: | Dors, O. L.; Freitas-Lemes, P.; Amôres, E. B.; Pérez Montero, Enrique ; Cardaci, M. V.; Hägele, Guillermo F.; Armah, M.; Krabbe, A. C.; Faúndez-Abans, M. | Palabras clave: | Galaxies: abundances Galaxies: active Galaxies: nuclei Galaxies: seyfert ISM: abundances |
Fecha de publicación: | 2020 | Editor: | Oxford University Press | Citación: | Monthly Notices of the Royal Astronomical Society 492(1): 468-479 (2019) | Resumen: | We compare the oxygen abundance (O/H) of the narrow-line regions (NLRs) of Seyfert 2 AGNs obtained through strong-line methods and from direct measurements of the electron temperature (Te-method). The aim of this study is to explore the effects of the use of distinct methods on the range of metallicity and on the mass-metallicity relation of active galactic nuclei (AGNs) at low redshifts (z<~0.4). We used the Sloan Digital Sky Survey (SDSS) and NASA/IPACExtragalactic Database (NED) to selected optical (3000<γ(Å)<7000) emission line intensities of 463 confirmed Seyfert 2 AGNs. The oxygen abundances of the NLRs were estimated using the theoretical Storchi-Bergmann et al. calibrations, the semi-empirical N2O2 calibration, the Bayesian H II-CHI-MISTRY code and the Te-method.We found that the oxygen abundance estimations via the strong-line methods differ from each other up to ~0.8 dex, with the largest discrepancies in the low-metallicity regime (12 + log(O/H) <~ 8.5).We confirmed that the Te-method underestimates the oxygen abundance in NLRs, producing unreal subsolar values. We did not find any correlation between the stellar mass of the host galaxies and the metallicity of their AGNs. This result is independent of the method used to estimate Z. © 2019 The Author(s). | Versión del editor: | http://dx.doi.org/10.1093/mnras/stz3492 | URI: | http://hdl.handle.net/10261/211152 | DOI: | 10.1093/mnras/stz3492 | ISSN: | 0035-8711 |
Aparece en las colecciones: | (IAA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
IAA_2020stz3492.pdf | 947,17 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
25
checked on 28-abr-2024
WEB OF SCIENCETM
Citations
21
checked on 27-feb-2024
Page view(s)
139
checked on 03-may-2024
Download(s)
120
checked on 03-may-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.