Chemical Abundance of the LINER galaxy UGC 4805 with SDSS-IV MaNGA

Abstract

Chemical abundance determinations in Low-Ionization Nuclear Line Regions (LINERs) are especially complex and uncertain because the nature of the ionizing source of this kind of object is unknown. In this work, we study the oxygen abundance in relation to the hydrogen abundance (O/H) of the gas phase of the UGC4805 LINER nucleus. Optical spectroscopic data from the Mapping Nearby Galaxies (MaNGA) survey was employed to derive the O/H abundance of the UGC4805 nucleus based on the extrapolation of the disk abundance gradient, on calibrations between O/H abundance and strong emission-lines for Active Galactic Nuclei (AGNs) as well as on photoionization models built with the Cloudy code, assuming gas accretion into a black hole (AGN) and post-Asymptotic Giant Branch (p-AGB) stars with different effective temperatures. We found that abundance gradient extrapolations, AGN calibrations, AGN and p-AGB photoionization models produce similar O/H values for the UGC4805 nucleus and similar ionization parameter values. The study demonstrated that the methods used to estimate the O/H abundance using nuclear emission-line ratios produce reliable results, which are in agreement with the O/H values obtained from the independent method of galactic metallicity gradient extrapolation. Finally, the results from the WHAN diagram combined with the fact that the high excitation level of the gas has to be maintained at kpc scales, we suggest that the main ionizing source of the UGC4805 nucleus probably has a stellar origin rather than an AGN.

17 pages, 13 figures

References in corpus (25)

• The Host Galaxies and Classification of Active Galactic Nuclei
• Overview of the SDSS-IV MaNGA Survey: Mapping Nearby Galaxies at Apache Point Observatory
• The MAPPINGS III Library of Fast Radiative Shock Models
• Understanding Galaxy Evolution through Emission Lines
• The Data Reduction Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey
• The structure of galactic disks: Studying late-type spiral galaxies using SDSS
• Deriving model-based T${}_e$-consistent chemical abundances in ionised gaseous nebulae
• Size and properties of the narrow-line region in Seyfert-1 galaxies from spatially-resolved optical spectroscopy
• Nebular spectroscopy: A guide on H II regions and planetary nebulae
• Low-Luminosity Active Galactic Nuclei: Are They UV-Faint and Radio Loud?
• Precision abundance analysis of bright HII galaxies
• The temperature and ionization structure of the emitting gas in HII galaxies: Implications for the accuracy of abundance determinations
• On the maximum value of the cosmic abundance of oxygen and the oxygen yield
• The metal abundance of circumnuclear star forming regions in early type spirals. Spectrophotometric observations
• Oxygen abundance maps of CALIFA galaxies
• Metallicity evolution of AGNs from UV emission-lines based on a new index
• Chemical abundances of Seyfert 2 AGNs-III. Reducing the oxygen abundance discrepancy
• Chemical abundances of Seyfert 2 AGNs $-$II. N2 metallicity calibration based on SDSS
• A bayesian-like approach to derive chemical abundances in Type-2 Active Galactic Nuclei based on photoionization models
• Chemical abundances of Seyfert 2 AGNs I. Comparing oxygen abundances from distinct methods using SDSS
• New metallicity calibration for Seyfert 2 galaxies based on the N2O2 index
• Modelling narrow-line regions of active galaxies in the Sloan Digital Sky Survey - I.Sample selection and physical conditions
• Semi-empirical metallicity calibrations based on ultraviolet emission lines of type-2 AGNs
• High resolution spectroscopy of the extended narrow-line region of IC 5063 and NGC 7212
• Effective temperature of ionizing stars of extragalactic HII regions

Cited by in corpus (7)

• Gas phase metallicity determinations in nearby AGNs with SDSS-IV MaNGA: evidence of metal poor accretion
• Spatially-resolved properties of early-type group-dominant galaxies with MUSE: gas content, ionisation mechanisms and metallicity gradients
• Chemical abundance of LINER galaxies -- Metallicity calibrations based on SDSS-IV MaNGA
• Chemical abundances in Seyfert galaxies -- VIII. Argon abundance estimates
• Chemical enrichment in LINERs from MaNGA. I. Tracing Oxygen and Nitrogen Nuclear Abundances in LINERs with Varied Ionizing Sources
• Chemical abundances in Seyfert galaxies -- VII. Direct abundance determination of neon based on optical and infrared emission lines
• The relationship between warm and hot gas-phase metallicity in massive elliptical galaxies and the influence of AGN feedback