Search Results - "Kewley, Lisa"

Understanding Galaxy Evolution Through Emission Lines by Kewley, Lisa J, Nicholls, David C, Sutherland, Ralph S

“…We review the use of emission lines for understanding galaxy evolution, focusing on excitation source, metallicity, ionization parameter, ISM pressure, and…”
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"Direct" Gas-phase Metallicity in Local Analogs of High-redshift Galaxies: Empirical Metallicity Calibrations for High-redshift Star-forming Galaxies by Bian, Fuyan, Kewley, Lisa J., Dopita, Michael A.

“…We study the direct gas-phase oxygen abundance using the well-detected auroral line [O iii]λ4363 in the stacked spectra of a sample of local analogs of…”
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Metallicity Calibrations and the Mass-Metallicity Relation for Star-forming Galaxies by Kewley, Lisa J, Ellison, Sara L

“…We investigate the effect of metallicity calibrations, AGN classification, and aperture covering fraction on the local mass-metallicity (M-Z) relation using…”
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The COSMOS-[O ii] survey: evolution of electron density with star formation rate by Kaasinen, Melanie, Bian, Fuyan, Groves, Brent, Kewley, Lisa J, Gupta, Anshu

“…Star-forming galaxies at z > 1 exhibit significantly different properties to local galaxies of equivalent stellar mass. Not only are high-redshift star-forming…”
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Theoretical ISM Pressure and Electron Density Diagnostics for Local and High-redshift Galaxies by Kewley, Lisa J., Nicholls, David C., Sutherland, Ralph, Rigby, Jane R., Acharya, Ayan, Dopita, Michael A., Bayliss, Matthew B.

“…We derive new self-consistent theoretical UV, optical, and IR diagnostics for the interstellar medium (ISM) pressure and electron density in the ionized…”
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Gas-phase metallicity gradients of TNG50 star-forming galaxies by Hemler, Z S, Torrey, Paul, Qi, Jia, Hernquist, Lars, Vogelsberger, Mark, Ma, Xiangcheng, Kewley, Lisa J, Nelson, Dylan, Pillepich, Annalisa, Pakmor, Rüdiger, Marinacci, Federico

“…ABSTRACT We present the radial gas-phase, mass-weighted metallicity profiles and gradients of the TNG50 star-forming galaxy population measured at redshifts z…”
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THE UNIVERSAL RELATION OF GALACTIC CHEMICAL EVOLUTION: THE ORIGIN OF THE MASS-METALLICITY RELATION by ZAHID, H JABRAN, Dima, Gabriel I, KUDRITZKI, ROLF-PETER, Kewley, Lisa J, Geller, Margaret J, Hwang, Ho Seong, Silverman, John D, Kashino, Daichi

“…We examine the mass-metallicity relation for z [lap] 1.6. The mass-metallicity relation follows a steep slope with a turnover, or "knee," at stellar masses…”
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Oxygen loss from simulated galaxies and the metal flow main sequence: predicting the dependence on mass and environment by Taylor, Philip, Kobayashi, Chiaki, Kewley, Lisa J

“…ABSTRACT We predict the mass fraction of oxygen lost from galaxies in a cosmological simulation as a function of stellar mass and environment at the present…”
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Metallicity gradients in local field star-forming galaxies: insights on inflows, outflows, and the coevolution of gas, stars and metals by Ho, I-Ting, Kudritzki, Rolf-Peter, Kewley, Lisa J., Zahid, H. Jabran, Dopita, Michael A., Bresolin, Fabio, Rupke, David S. N.

“…We present metallicity gradients in 49 local field star-forming galaxies. We derive gas-phase oxygen abundances using two widely adopted metallicity…”
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What drives the redshift evolution of strong emission line ratios? by Bian, Fuyan, Kewley, Lisa J, Groves, Brent, Dopita, Michael A

“…ABSTRACT We study the physical mechanisms that cause the offset between low-redshift and high-redshift galaxies on the [O iii] λ5007/H β versus [N ii] λ6584/H…”
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Chemical abundances in high-redshift galaxies: a powerful new emission line diagnostic by Dopita, Michael A., Kewley, Lisa J., Sutherland, Ralph S., Nicholls, David C.

“…This Letter presents a new, remarkably simple diagnostic specifically designed to derive chemical abundances for high redshift galaxies. It uses only the H α ,…”
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Estimating Electron Temperatures in Ionized Nebulae: The Direct Method and its Limitations by Nicholls, David C., Kewley, Lisa J., Sutherland, Ralph S.

“…In this paper we examine the Direct Method for measuring electron temperatures in H ii regions, and the extent to which such measurements can provide…”
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A New Photoionization Model of the Narrow-line Region in Active Galactic Nuclei by Zhu, Peixin, Kewley, Lisa J., Sutherland, Ralph S.

“…Abstract The photoionization model of narrow-line regions in active galactic nuclei (AGNs) has been investigated for decades. Many published models are…”
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Dissecting galaxies: spatial and spectral separation of emission excited by star formation and AGN activity by Davies, Rebecca L., Groves, Brent, Kewley, Lisa J., Dopita, Michael A., Hampton, Elise J., Shastri, Prajval, Scharwächter, Julia, Sutherland, Ralph, Kharb, Preeti, Bhatt, Harish, Jin, Chichuan, Banfield, Julie, Zaw, Ingyin, James, Bethan, Juneau, Stéphanie, Srivastava, Shweta

“…The optical spectra of Seyfert galaxies are often dominated by emission lines excited by both star formation and active galactic nucleus (AGN) activity…”
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LOCAL ANALOGS FOR HIGH-REDSHIFT GALAXIES: RESEMBLING THE PHYSICAL CONDITIONS OF THE INTERSTELLAR MEDIUM IN HIGH-REDSHIFT GALAXIES by Bian, Fuyan, Kewley, Lisa J., Dopita, Michael A., Juneau, Stephanie

“…ABSTRACT We present a sample of local analogs for high-redshift galaxies selected in the Sloan Digital Sky Survey (SDSS). The physical conditions of the…”
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Messenger Monte Carlo MAPPINGS V (M3)—A Self-consistent, Three-dimensional Photoionization Code by Jin, Yifei, Kewley, Lisa J., Sutherland, Ralph

“…Abstract The Messenger Interface Monte Carlo Mappings V (M 3 ) is a photoionization code adopting the fully self-consistent Monte Carlo radiative transfer…”
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IZI: INFERRING THE GAS PHASE METALLICITY ( Z ) AND IONIZATION PARAMETER ( q ) OF IONIZED NEBULAE USING BAYESIAN STATISTICS by Blanc, Guillermo A, Kewley, Lisa, Vogt, Frederic P A, Dopita, Michael A

“…We present a new method for inferring the metallicity (Z) and ionization parameter (q) of H II regions and star-forming galaxies using strong nebular emission…”
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A new diagnostic to separate line emission from star formation, shocks, and AGNs simultaneously in IFU data by D'Agostino, Joshua J, Kewley, Lisa J, Groves, Brent A, Medling, Anne, Dopita, Michael A, Thomas, Adam D

“…ABSTRACT In the optical spectra of galaxies, methods for the separation of line emission arising from star formation and an additional hard component, such as…”
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Theoretically Modeling Photoionized Regions with Fractal Geometry in Three Dimensions by Jin, Yifei, Kewley, Lisa J., Sutherland, Ralph S.

“…Abstract We create a photoionization model embedded in the turbulent interstellar medium (ISM) by using the state-of-the-art Messenger Monte Carlo MAPPINGS V…”
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Spatially Resolved Temperature and Density Structures of Nearby H ii Regions by Jin, Yifei, Sutherland, Ralph, Kewley, Lisa J., Nicholls, David C.

“…Abstract Photoionization models frequently assume constant temperature or density within H ii regions. We investigate this assumption by measuring the detailed…”
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