4.6 Article

The COS CGM Compendium. IV. Effects of Varying Ionization Backgrounds on Metallicity Determinations in the z < 1 Circumgalactic Medium

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Astronomy & Astrophysics

How robust are the inferred density and metallicity of the circumgalactic medium?

Anshuman Acharya et al.

Summary: Quantitative estimates of the basic properties of the circumgalactic medium (CGM) are affected by the spectrum of incident UV background radiation, and the variation in UV background models leads to large uncertainties in the inferred density and metallicity. Furthermore, the hardness or softness of the UV background affects the inferred density and metallicity.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Article Astronomy & Astrophysics

Characterizing Extreme Emission-line Galaxies. I. A Four-zone Ionization Model for Very High-ionization Emission*

Danielle A. Berg et al.

Summary: Stellar population models predict ionization of oxygen up to O+2, while some extreme emission-line galaxies exhibit much higher ionization potentials. A four-zone ionization model has been proposed to explain the high-ionization emission lines in EELGs, revealing steeper central ionization gradients and higher ionization parameters compared to traditional models. Additionally, a model-independent dichotomy in abundance patterns suggests alpha/Fe enrichment in EELGs, but there remains a challenge in reproducing the observed high-ionization emission lines.

ASTROPHYSICAL JOURNAL (2021)

Article Astronomy & Astrophysics

The COS Absorption Survey of Baryon Harbors: unveiling the physical conditions of circumgalactic gas through multiphase Bayesian ionization modelling

Karl J. Haislmaier et al.

Summary: The study explores multi-phase ionization models to explain quasar absorption systems data, revealing that single-phase ionization models cannot fully replicate the measured column densities, and suggests the need for at least two distinct ionization phases.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

Using cosmological simulations and synthetic absorption spectra to assess the accuracy of observationally derived CGM metallicities

Rachel Marra et al.

Summary: In this study, adaptive mesh refinement hydrodynamic cosmological simulations were used to generate synthetic quasar absorption-line spectra of different galaxies. By analyzing these simulated spectra, it was found that global metallicity measurements from quasar absorption line studies capture the average metallicity and ionization parameters in systems with substantial spread in gas properties.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

A cosmic UV/X-ray background model update

Claude-Andre Faucher-Giguere

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

Relativistic accretion disc reflection in AGN X-ray spectra at z=0.5-4: a study of four Chandra Deep Fields

L. Baronchelli et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Article Astronomy & Astrophysics

New synthesis models of consistent extragalactic background light over cosmic time

Vikram Khaire et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

Consistent modelling of the meta-galactic UV background and the thermal/ionization history of the intergalactic medium

Ewald Puchwein et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

Characterizing circumgalactic gas around massive ellipticals at z ∼ 0.4-II. Physical properties and elemental abundances

Fakhri S. Zahedy et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Astronomy & Astrophysics

The COS CGM Compendium. II. Metallicities of the Partial and Lyman Limit Systems at z ≲ 1

Christopher B. Wotta et al.

ASTROPHYSICAL JOURNAL (2019)

Article Astronomy & Astrophysics

Relationship between the Metallicity of the Circumgalactic Medium and Galaxy Orientation

Stephanie K. Pointon et al.

ASTROPHYSICAL JOURNAL (2019)

Article Astronomy & Astrophysics

Observing the circumgalactic medium of simulated galaxies through synthetic absorption spectra

Cameron J. Liang et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

The COS CGM Compendium. I. Survey Design and Initial Results

Nicolas Lehner et al.

ASTROPHYSICAL JOURNAL (2018)

Article Astronomy & Astrophysics

Constraints on QSO emissivity using HI and He II Lyman α forest

Vikram Khaire

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Article Astronomy & Astrophysics

Gauging Metallicity of Diffuse Gas under an Uncertain Ionizing Radiation Field

Hsiao-Wen Chen et al.

ASTROPHYSICAL JOURNAL LETTERS (2017)

Article Astronomy & Astrophysics

The physical properties of z > 2 Lyman limit systems: new constraints for feedback and accretion models

Michele Fumagalli et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2016)

Article Astronomy & Astrophysics

LOW-METALLICITY ABSORBERS ACCOUNT FOR HALF OF THE DENSE CIRCUMGALACTIC GAS AT z ≲ 1

Christopher B. Wotta et al.

ASTROPHYSICAL JOURNAL (2016)

Article Astronomy & Astrophysics

The first ultraviolet quasar-stacked spectrum at z ≃ 2.4 from WFC3

E. Lusso et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

The impact of galactic feedback on the circumgalactic medium

Joshua Suresh et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

CONNECTION BETWEEN THE CIRCUMGALACTIC MEDIUM AND THE INTERSTELLAR MEDIUM OF GALAXIES: RESULTS FROM THE COS-GASS SURVEY

Sanchayeeta Borthakur et al.

ASTROPHYSICAL JOURNAL (2015)

Article Astronomy & Astrophysics

THE METAGALACTIC IONIZING BACKGROUND: A CRISIS IN UV PHOTON PRODUCTION OR INCORRECT GALAXY ESCAPE FRACTIONS?

J. Michael Shull et al.

ASTROPHYSICAL JOURNAL (2015)

Article Astronomy & Astrophysics

THE PHOTON UNDERPRODUCTION CRISIS

Juna A. Kollmeier et al.

ASTROPHYSICAL JOURNAL LETTERS (2014)

Article Astronomy & Astrophysics

Mining circumgalactic baryons in the low-redshift universe

Cameron J. Liang et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)

Article Astronomy & Astrophysics

THE COS-HALOS SURVEY: PHYSICAL CONDITIONS AND BARYONIC MASS IN THE LOW-REDSHIFT CIRCUMGALACTIC MEDIUM

Jessica K. Werk et al.

ASTROPHYSICAL JOURNAL (2014)

Article Astronomy & Astrophysics

Fluctuations of the intergalactic ionization field at redshift z ∼ 2

I. I. Agafonova et al.

ASTRONOMY & ASTROPHYSICS (2013)

Article Astronomy & Astrophysics

Astropy: A community Python package for astronomy

Thomas P. Robitaille et al.

ASTRONOMY & ASTROPHYSICS (2013)

Article Astronomy & Astrophysics

THE BIMODAL METALLICITY DISTRIBUTION OF THE COOL CIRCUMGALACTIC MEDIUM AT z ≲ 1

N. Lehner et al.

ASTROPHYSICAL JOURNAL (2013)

Article Astronomy & Astrophysics

Constraints on hydrodynamical subgrid models from quasar absorption line studies of the simulated circumgalactic medium

Cameron B. Hummels et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2013)

Article Astronomy & Astrophysics

emcee: The MCMC Hammer

Daniel Foreman-Mackey et al.

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC (2013)

Article Astronomy & Astrophysics

HST-COS OBSERVATIONS OF AGNs. I. ULTRAVIOLET COMPOSITE SPECTRA OF THE IONIZING CONTINUUM AND EMISSION LINES

J. Michael Shull et al.

ASTROPHYSICAL JOURNAL (2012)

Article Astronomy & Astrophysics

RADIATIVE TRANSFER IN A CLUMPY UNIVERSE. IV. NEW SYNTHESIS MODELS OF THE COSMIC UV/X-RAY BACKGROUND

Francesco Haardt et al.

ASTROPHYSICAL JOURNAL (2012)

Article Astronomy & Astrophysics

THE DIRECT DETECTION OF COOL, METAL-ENRICHED GAS ACCRETION ONTO GALAXIES AT z ∼ 0.5

Kate H. R. Rubin et al.

ASTROPHYSICAL JOURNAL LETTERS (2012)

Article Astronomy & Astrophysics

THE COS-HALOS SURVEY: KECK LRIS AND MAGELLAN MagE OPTICAL SPECTROSCOPY

Jessica K. Werk et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2012)

Article Astronomy & Astrophysics

ORBITING CIRCUMGALACTIC GAS AS A SIGNATURE OF COSMOLOGICAL ACCRETION

Kyle R. Stewart et al.

ASTROPHYSICAL JOURNAL (2011)

Article Multidisciplinary Sciences

The Hidden Mass and Large Spatial Extent of a Post-Starburst Galaxy Outflow

Todd M. Tripp et al.

SCIENCE (2011)

Article Astronomy & Astrophysics

PROPERTIES AND ORIGIN OF THE HIGH-VELOCITY GAS TOWARD THE LARGE MAGELLANIC CLOUD

N. Lehner et al.

ASTROPHYSICAL JOURNAL (2009)

Article Astronomy & Astrophysics

A NEW CALCULATION OF THE IONIZING BACKGROUND SPECTRUM AND THE EFFECTS OF He II REIONIZATION

Claude-Andre Faucher Giguere et al.

ASTROPHYSICAL JOURNAL (2009)

Article Astronomy & Astrophysics

A MIKE plus UVES survey of sub-damped Lyman α systems at z < 1.5

Joseph D. Meiring et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2009)

Review Astronomy & Astrophysics

Strong z ∼ 0.5 OVI absorption towards PKS 0405-123: implications for ionization and metallicity of the Cosmic Web

J. Christopher Howk et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2009)

Article Astronomy & Astrophysics

Spectral energy distribution of the metagalactic ionizing radiation field from QSO absorption spectra

II Agafonova et al.

ASTRONOMY & ASTROPHYSICS (2005)

Article Astronomy & Astrophysics

Multiphase high-velocity clouds toward HE 0226-4110 and PG 0953+414

AJ Fox et al.

ASTROPHYSICAL JOURNAL (2005)

Article Astronomy & Astrophysics

A composite extreme-ultraviolet QSO spectrum from FUSE

JE Scott et al.

ASTROPHYSICAL JOURNAL (2004)

Article Astronomy & Astrophysics

A homogeneous sample of sub-damped Lyman α systems -: I.: Construction of the sample and chemical abundance measurements

M Dessauges-Zavadsky et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2003)

Review Astronomy & Astrophysics

Feedback and the fundamental line of low-luminosity low-surface-brightness/dwarf galaxies

A Dekel et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2003)

Article Astronomy & Astrophysics

Inhomogeneous metal enrichment at z ∼ 1.9:: The Lyman limit systems in the spectrum of the HDF-S quasar

V D'Odorico et al.

ASTRONOMY & ASTROPHYSICS (2001)