Measuring Chemical Abundances with Infrared Nebular Lines: HII-Chi-mistry-IR

Abstract

We provide a new method to derive heavy element abundances based on the unique suite of nebular lines in the mid- to far-infrared (IR) range. Using grids of photo-ionisation models that cover a wide range in O/H and N/O abundances, and ionisation parameter, our code HII-Chi-mistry-IR (HCm-IR) provides model-based abundances based on extinction free and temperature insensitive tracers, two significant advantages over optical diagnostics. The code is probed using a sample of 56 galaxies observed with $Spitzer$ and $Herschel$ covering a wide range in metallicity, $7.2\lesssim 12+\log (O/H)\lesssim 8.9$. The IR model-based metallicities obtained are robust within a scatter of 0.03 dex when the hydrogen recombination lines, which are typically faint transitions in the IR range, are not available. When compared to the optical abundances obtained with the direct method, model-based methods, and strong-line calibrations, HCm-IR estimates show a typical dispersion of ~0.2 dex, in line with previous studies comparing IR and optical abundances, a do not introduce a noticeable systematic above $12+\log (O/H)\gtrsim 7.6$. This accuracy can be achieved using the lines [SIV]${}_{10.5\mu m}$, [SIII]${}_{18.7,33.5\mu m}$, [NeIII]${}_{15.6\mu m}$ and [NeII]${}_{12.8\mu m}$. Additionally, HCm-IR provides an independent N/O measurement when the [OIII]${}_{52,88\mu m}$ and [NIII]${}_{57\mu m}$ transitions are measured, and therefore the derived abundances in this case do not rely on particular assumptions in the N/O ratio. Large uncertainties (~0.4 dex) may affect the abundance determinations of galaxies at sub- or over-solar metallicities when a solar-like N/O ratio is adopted. Finally, the code has been applied to 8 galaxies located at $1.8<z<7.5$ with ground-based detections of far-IR lines redshifted in the submm range, revealing solar-like N/O and O/H abundances in agreement with recent studies.

arXiv commentAccepted for publication in A&A. The abstract has been abridged to fit Arxiv's character limit. A script to derive chemical abundances with HII-Chi-mistry-IR is available at https://www.iaa.csic.es/~epm/HII-CHI-mistry.html

References in corpus (70)

• The chemical composition of the Sun
• Cosmic Star Formation History
• Herschel Space Observatory - An ESA facility for far-infrared and submillimetre astronomy
• The Spitzer Space Telescope Mission
• The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
• The James Webb Space Telescope
• [O III]/[N II] as an Abundance Indicator at High Redshift
• The Infrared Spectrograph on the Spitzer Space Telescope
• Metallicity Calibrations and the Mass-Metallicity Relation for Star-Forming Galaxies
• Using Strong Lines to Estimate Abundances in Extragalactic HII Regions and Starburst Galaxies
• The Mid-Infrared Spectrum of Star-Forming Galaxies: Global Properties of PAH Emission
• The GALEX Ultraviolet Atlas of Nearby Galaxies
• De Re Metallica: The cosmic chemical evolution of galaxies
• PyNeb: a new tool for analyzing emission lines. I. Code description and validation of results
• Optical Spectroscopy and Nebular Oxygen Abundances of the Spitzer/SINGS Galaxies
• Understanding Galaxy Evolution through Emission Lines
• Heavy element abundances in blue compact galaxies
• Nebular Emission from Star-Forming Galaxies
• Spitzer Quasar and ULIRG Evolution Study (QUEST). IV. Comparison of 1-Jy Ultraluminous Infrared Galaxies with Palomar-Green Quasars
• KINGFISH -- Key Insights on Nearby Galaxies: A Far-Infrared Survey with Herschel: Survey Description and Image Atlas
• The Composition Gradient in M101 Revisited. II. Electron Temperatures and Implications for the Nebular Abundance Scale
• New calibrations for abundance determinations in HII regions
• The impact of the nitrogen-to-oxygen ratio on ionized nebulae diagnostics based on [NII] emission lines
• An Overview of the Dwarf Galaxy Survey
• An Atlas of Galaxy Spectral Energy Distributions from the Ultraviolet to the Mid-Infrared
• First detection of [CII]158um at high redshift: vigorous star formation in the early universe
• On the oxygen abundance determination in HII regions: High - metallicity regions
• The Herschel Dwarf Galaxy Survey: I. Properties of the low-metallicity ISM from PACS spectroscopy
• Towards a Complete Census of AGNs in Nearby Galaxies: A Large Population of Optically Unidentified AGNs
• Deriving model-based T${}_e$-consistent chemical abundances in ionised gaseous nebulae
• Massive star formation and evolution in starburst galaxies: mid-infrared spectroscopy with ISO-SWS
• On the oxygen and nitrogen chemical abundances and the evolution of the "green pea" galaxies
• A VLT study of metal-rich extragalactic H II regions. I. Observations and empirical abundances
• PopStar I: Evolutionary synthesis models description
• The First Stellar Abundance Measurements in the Galactic Center: the M Supergiant IRS 7
• Nebular spectroscopy: A guide on H II regions and planetary nebulae
• A mid-infrared spectroscopic survey of starburst galaxies: excitation and abundances
• A comparative analysis of empirical calibrators for nebular metallicity
• AKARI IRC infrared 2.5-5 micron spectroscopy of a large sample of luminous infrared galaxies
• Precision abundance analysis of bright HII galaxies
• The MOSDEF Survey: the Variation of the Dust Attenuation Curve with Metallicity
• The dust budget crisis in high-redshift submillimetre galaxies
• The Herschel Dwarf Galaxy Survey: II. Physical conditions, origin of [CII] emission, and porosity of the multiphase low-metallicity ISM
• SHINING, A Survey of Far Infrared Lines in Nearby Galaxies. II: Line-Deficit Models, AGN impact, [CII]-SFR Scaling Relations, and Mass-Metallicity Relation in (U)LIRGS
• The Nitrogen-to-Oxygen evolution in galaxies: the role of the star formation rate
• CASSIS: The Cornell Atlas of Spitzer/Infrared Spectrograph Sources. II. High-resolution observations
• The dust content of high-z submillimeter galaxies revealed by Herschel
• A Spitzer high resolution mid-infrared spectral atlas of starburst galaxies
• Chemical abundances for Hf 2-2, a planetary nebula with the strongest known heavy element recombination lines
• Metallicity Diagnostics with Infrared Fine-Structure Lines
• Far-infrared line spectra of active galaxies from the Herschel/PACS Spectrometer: the complete database
• An ALMA multi-line survey of the interstellar medium of the redshift 7.5 quasar host galaxy J1342+0928
• Far-infrared metallicity diagnostics: Application to local ultraluminous infrared galaxies
• Ionization Parameter as a Diagnostic of Radiation and Wind Pressures in H II Regions and Starburst Galaxies
• Integral field spectroscopy of planetary nebulae: mapping the line diagnostics and hydrogen-poor zones with VLT FLAMES
• First detections of the [NII] 122 μm line at high redshift: Demonstrating the utility of the line for studying galaxies in the early universe
• Chemical distribution of HII regions towards the Galactic anticentre
• A dense, solar metallicity ISM in the z=4.2 dusty star-forming galaxy SPT0418-47
• On the far-infrared metallicity diagnostics: applications to high-redshift galaxies
• Neon and Sulfur Abundances of Planetary Nebulae in the Magellanic Clouds
• A bayesian-like approach to derive chemical abundances in Type-2 Active Galactic Nuclei based on photoionization models
• The Abundance Properties of Nearby Late-Type Galaxies. \\ II. The Relation between Abundance Distributions and Surface Brightness Profiles
• Towards A Removal of Temperature Dependencies from Abundance Determinations
• CNO emission of an unlensed submillimeter galaxy at z=4.3
• Optical and mid-infrared neon abundance determinations in star-forming regions
• Elemental Abundances of Blue Compact Dwarfs from mid-IR Spectroscopy with Spitzer
• Modeling ionized gas in low-metallicity environments: the Local Group dwarf galaxy IC10
• Constraining the ISM properties of the Cloverleaf quasar host galaxy with Herschel spectroscopy
• First metallicity determination from Near-Infrared spectra for five obscured Cepheids discovered in the inner Disk
• Far-Infrared Line Diagnostics: Improving N/O Abundance Estimates for Dusty Galaxies

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