445 citations · 3k across the 47 of their papers we have counts for
8 papers · 1 filter
The Cosmic BPT Diagram: Confronting Theory with Observations
Lisa J. Kewley, Christian Maier, Kiyoto Yabe +4
We compare a large sample of galaxies between 0.5<z<2.6 with theoretical predictions for how the optical diagnostic line ratios in galaxy ensembles change as a function of cosmic t…
Theoretical Evolution of Optical Strong Lines across Cosmic Time
Lisa J. Kewley, Michael A. Dopita, Claus Leitherer +5
We use the chemical evolution predictions of cosmological hydrodynamic simulations with our latest theoretical stellar population synthesis, photoionization and shock models to pre…
Systematics in Metallicity Gradient Measurements I : Angular Resolution, Signal-to-Noise and Annuli Binning
T. -T. Yuan, L. J. Kewley, J. Rich
With the rapid progress in metallicity gradient studies at high-redshift, it is imperative that we thoroughly understand the systematics in these measurements. This work investigat…
The Metallicity Evolution of Star-Forming Galaxies from Redshift 0 to 3: Combining Magnitude Limited Survey with Gravitational Lensing
T. -T. Yuan, L. J. Kewley, J. Richard
We present a comprehensive observational study of the gas phase metallicity of star-forming galaxies from z ~ 0 -> 3. We combine our new sample of gravitationally lensed galaxies w…
The A2667 Giant Arc at z=1.03: Evidence for Large-scale Shocks at High Redshift
T. -T. Yuan, L. J. Kewley, A. M. Swinbank +1
We present the spatially resolved emission line ratio properties of a ~10^10 M_sun star-forming galaxy at redshift z=1.03. This galaxy is gravitationally lensed as a triple-image g…
Metallicity Gradient of a Lensed Face-on Spiral Galaxy at Redshift 1.49
T. -T. Yuan, L. J. Kewley, A. M. Swinbank +2
We present the first metallicity gradient measurement for a grand-design face-on spiral galaxy at z~1.5. This galaxy has been magnified by a factor of 22 by a massive, X-ra…
The Role of Starburst-AGN composites in Luminous Infrared Galaxy Mergers: Insights from the New Optical Classification Scheme
T. -T. Yuan, L. J. Kewley, D. B. Sanders
We investigate the fraction of starbursts, starburst-AGN composites, Seyferts, and LINERs as a function of infrared luminosity (L_IR) and merger progress for ~500 infrared-selected…
First direct metallicity measurement of a lensed star-forming galaxy at z=1.7
T. -T. Yuan, L. J. Kewley
We present the rest-frame optical spectrum of a strongly lensed galaxy at redshift z =1.7 behind the cluster Abell 1689. We detect the temperature sensitive auroral line [O III] 43…