## Moreover, dayside atomic oxygen abundances also vary periodically as the Kelvin wave momentarily decreases horizontal wind speeds and enhances atomic oxygen abundances, explaining the observations of EUV oxygen dayglow.

Venus’ upper atmosphere revealed by a GCM: I. Structure and variability of the circulation

## The motivation for such a study is clearly explained in the Introduction which provides a comprehensive description of the historic use of these spectra in remote sensing of the mesopause temperature and the retrieval of atomic oxygen abundances.

Interactive comment on “ OH level populations and accuracies of Einstein-A coefficients from hundreds of measured lines

## We extract spectra from emission line regions identified within dendrograms, combine emission line ratios and line widths to distinguish between ${\rm H\, \small {II}}$ regions, planetary nebulae, and supernova remnants, and compute their ionised gas properties, gas-phase oxygen abundances, and feedback-related pressure terms.

The impact of pre-supernova feedback and its dependence on environment

## We have determined the gas phase oxygen abundances for 7,138 HII regions across the disks of eight nearby galaxies using VLT/MUSE optical integral field spectroscopy as part of the PHANGS-MUSE survey.

Mapping metallicity variations across nearby galaxy disks

## We report a saturation of Oxygen abundances for the nuclear regions of SFG.

Chemical abundances in the nuclear region of nearby galaxies from the Palomar Survey

10.21203/RS.3.RS-593104/V1

## However, simultaneous, bounded constraints on both carbon and oxygen abundances, which are key for understanding giant planet formation (Oeberg et al.

A Precise Carbon and Oxygen Abundance Determination in a Hot Jupiter Atmosphere

10.1051/0004-6361/202039772

## 5) star-forming galaxies (SFGs) with respect to oxygen abundances, stellar masses M?, far-UV absolute magnitudes MFUV, star-formation rates SFR and specific star-formation rates sSFR, Lyman-continuum photon production efficiencies (ξion), UV continuum slopes β, [O III] λ5007/[O II] λ3727 and [Ne III] λ3868/[O II] λ3727 ratios, and emission-line equivalent widths EW([O II] λ3727), EW([O III] λ5007), and EW(Hα).

Low-redshift compact star-forming galaxies as analogues of high-redshift star-forming galaxies

## Using the extremely high O32 in J2229+2725, we have improved the strong-line calibration for the determination of oxygen abundances in the most metal-deficient galaxies, in the range 12 + logO/H $\lesssim$ 7.

J2229+2725: an extremely low metallicity dwarf compact star-forming galaxy with an exceptionally high [O iii]λ5007/[O ii]λ3727 flux ratio of 53

10.3847/1538-4357/abf8b9

## We rederive the oxygen abundances of all CHAOS galaxies using this new temperature prioritization method, and we find that the gradients are consistent with the results of a recent study of Berg et al.

CHAOS. VI. Direct Abundances in NGC 2403

10.1051/0004-6361/202141588

## Oxygen abundances, derived using different lines, were taken from previous papers in this series and updated with the new stellar parameters.

Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program. IV. Carbon and C/O ratios for Galactic stellar populations and planet hosts

## The relative intensities of emission lines were used to derive the ionic and total neon and oxygen abundances through electron temperature estimations (Te-method).

Chemical abundances in Seyfert galaxies – VII. Direct abundance determination of neon based on optical and infrared emission lines

10.1016/J.ICARUS.2021.114400

## Moreover, dayside atomic oxygen abundances also vary periodically as the Kelvin wave momentarily decreases horizontal wind speeds and enhances atomic oxygen abundances, explaining the observations of EUV oxygen dayglow.

Venus’ upper atmosphere revealed by a GCM: I. Structure and variability of the circulation

## 49, selected from the Sloan Digital Sky Survey (SDSS) to be local analogues of high-redshift galaxies, was used to analyze their most prominent emission lines and to derive total oxygen abundances and nitrogen-to-oxygen ratios following the direct method in the ranges 7.

Extreme emission-line galaxies in SDSS – I. Empirical and model-based calibrations of chemical abundances

## We extract spectra from emission line regions identified within dendrograms, combine emission line ratios and line widths to distinguish between ${\rm H\, \small {II}}$ regions, planetary nebulae, and supernova remnants, and compute their ionised gas properties, gas-phase oxygen abundances, and feedback-related pressure terms.

The impact of pre-supernova feedback and its dependence on environment

10.3103/S0884591321020033

## The oxygen abundances for the bulk of compact galaxies are distributed in the range 7.

Compact Galaxies with Active Star Formation from the SDSS DR14: Star-Formation Rates Derived from Combinations of Luminosities in Different Wavelength Ranges

## Deriving oxygen abundances using optical spectra often relies on empirical strong-line calibrations calibrated to the direct method.

A machine learning artificial neural network calibration of the strong-line oxygen abundance

## Increases in WC carbon and oxygen abundances turn out to slightly reduce the predicted mass-loss rates.

Driving classical Wolf-Rayet winds: a Γ- and Z-dependent mass-loss

10.3847/1538-4357/ab5115

## We have determined the gas phase oxygen abundances for 7,138 HII regions across the disks of eight nearby galaxies using VLT/MUSE optical integral field spectroscopy as part of the PHANGS-MUSE survey.

Mapping metallicity variations across nearby galaxy disks

## The three sequences of low-mass stars in NGC 6752 are consistent with stellar populations with different oxygen abundances.

The HST Large Programme on NGC 6752 - II. Multiple populations at the bottom of the main sequence probed in NIR

## The motivation for such a study is clearly explained in the Introduction which provides a comprehensive description of the historic use of these spectra in remote sensing of the mesopause temperature and the retrieval of atomic oxygen abundances.

Interactive comment on “ OH level populations and accuracies of Einstein-A coefficients from hundreds of measured lines

## Non-LTE analysis of the oxygen abundances for 51 Galactic A-, F- and G-type supergiants and bright giants is performed.

Oxygen abundance and the N/C versus N/O relation for AFG supergiants and bright giants

10.3847/1538-4357/ab3df7

## Oxygen abundances were then derived via strong emission lines using a Bayesian approach.

HETDEX Pilot Survey. VI. [{\rm{O}}\,{\rm{III}}] Emitters and Expectations for a Local Sample of Star-forming Galaxies in HETDEX

10.1146/annurev-astro-012120-013326

## First, I briefly summarise the global spectroscopic properties of these galaxies, discussing the main ionization processes, and the global relations described between the star-formation rates, oxygen abundances, and average properties of their stellar populations (age and metallicity) with the stellar mass.

Spatially-Resolved Spectroscopic Properties of Low-Redshift Star-Forming Galaxies

## In the first paper of the series we describe the project and present a sample of 18 void galaxies with oxygen abundances that fall below the reference `metallicity-luminosity' relation, or with possible signs of recent external accretion in their optical morphology.

Search for gas accretion imprints in voids - I. Sample selection and results for NGC 428

10.1051/0004-6361/201834480

## For the first time, we take into account three-dimensional (3D) hydrodynamic effects together with departures from local thermodynamic equilibrium (LTE) when determining both the stellar parameters and the elemental abundances, by deriving effective temperatures from 3D non-LTE H$\beta$ profiles, surface gravities from Gaia parallaxes, iron abundances from 3D LTE Feii equivalent widths, and carbon and oxygen abundances from 3D non-LTE Ci and Oi equivalent widths.

Carbon and oxygen in metal-poor halo stars

## We characterise the HII regions in terms of their sizes, morphologies, ionisation structure, luminosity and kinematics, and derive oxygen abundances via emission line ratios.

Feedback from massive stars at low metallicities: MUSE observations of N44 and N180 in the Large Magellanic Cloud

10.1051/0004-6361/201834554

## Stellar parameters (effective temperature, surface gravity, projected rotational velocity, microturbulence, and macroturbulence) and silicon and oxygen abundances are presented for 28 stars located beyond 9 kpc from the Galactic centre plus three stars in the solar neighborhood.

Radial abundance gradients in the outer Galactic disk as traced by main-sequence OB stars.

## We also derived the oxygen abundances of all the six regions adopting indirect method calibrations.

Chemical abundances and radial velocities in the extremely metal-poor galaxy DDO 68

## Star-forming regions on this galaxy display oxygen abundances that are consistent with solar metallicities.

Clues on Arp 142: The spiral–elliptical merger

## The calculated data are important for modelling stellar spectra, leading to accurate oxygen abundances.

Inelastic processes in oxygen–hydrogen collisions

10.1051/0004-6361/201935522

## We measured oxygen abundances for ten cluster galaxies with detected [NII] lines in the individual galaxy spectra and compared the MZR of the galaxies inside half R200 with the infalling galaxies and a field sample at similar redshifts.

Cluster induced quenching of galaxies in the massive cluster XMMXCSJ2215.9-1738 at z~1.5 traced by enhanced metallicities inside half R200

10.1051/0004-6361/201936638

## A giant planet forming in the inner disk would be accreting gas with low carbon and oxygen abundances as well as very little icy dust, potentially leading to a planet atmosphere with strongly substellar C/H and O/H ratios.

The dry and carbon poor inner disk of TW Hya: evidence for a massive icy dust trap

## This paper presents a new dataset of nighttime atomic oxygen density [O], derived from OH(8–4) ro-vibrational band emissions, using a non-local thermal equilibrium model, with the aim of offering new insight into the atomic oxygen abundances in the mesopause region.

Global nighttime atomic oxygen abundances from resampled GOMOS hydroxyl airglow measurements in the mesopause region

10.5194/ACP-19-13891-2019

## This paper presents a new dataset of nighttime atomic oxygen density [O], derived from OH(8–4) ro-vibrational band emissions, using a non-local thermal equilibrium model, with the aim of offering new insight into the atomic oxygen abundances in the mesopause region.

Global nighttime atomic oxygen abundances from GOMOS hydroxyl airglow measurements in the mesopause region

10.1051/0004-6361/201834444

## Using literature and MUSE emission line fluxes, we derived gas-phase metallicities (oxygen abundances) for over 10 000 individual regions and determine characteristic metallicities for each galaxy.

A systematic metallicity study of DustPedia galaxies reveals evolution in the dust-to-metal ratios