The universal relation of galactic chemical evolution: the origin of the mass-metallicity relation
H. Jabran Zahid,H. Jabran Zahid,Gabriel I. Dima,Rolf-Peter Kudritzki,Lisa J. Kewley,Margaret J. Geller,Ho Seong Hwang,John D. Silverman,Daichi Kashino +8 more
TLDR
In this article, the mass-metallicity relation in local galaxies was examined for z 1.6 and it was shown that the relationship between metallicity and the stellar-to-gas ratio is a redshift-independent, universal relationship followed by all galaxies as they evolve.Abstract:
We examine the mass-metallicity relation for z 1.6. The mass-metallicity relation follows a steep slope with a turnover, or "knee," at stellar masses around 1010 M ☉. At stellar masses higher than the characteristic turnover mass, the mass-metallicity relation flattens as metallicities begin to saturate. We show that the redshift evolution of the mass-metallicity relation depends only on the evolution of the characteristic turnover mass. The relationship between metallicity and the stellar mass normalized to the characteristic turnover mass is independent of redshift. We find that the redshift-independent slope of the mass-metallicity relation is set by the slope of the relationship between gas mass and stellar mass. The turnover in the mass-metallicity relation occurs when the gas-phase oxygen abundance is high enough that the amount of oxygen locked up in low-mass stars is an appreciable fraction of the amount of oxygen produced by massive stars. The characteristic turnover mass is the stellar mass, where the stellar-to-gas mass ratio is unity. Numerical modeling suggests that the relationship between metallicity and the stellar-to-gas mass ratio is a redshift-independent, universal relationship followed by all galaxies as they evolve. The mass-metallicity relation originates from this more fundamental universal relationship between metallicity and the stellar-to-gas mass ratio. We test the validity of this universal metallicity relation in local galaxies where stellar mass, metallicity, and gas mass measurements are available. The data are consistent with a universal metallicity relation. We derive an equation for estimating the hydrogen gas mass from measurements of stellar mass and metallicity valid for z 1.6 and predict the cosmological evolution of galactic gas masses.read more
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The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
Joop Schaye,Robert A. Crain,Richard G. Bower,Michelle Furlong,Matthieu Schaller,Tom Theuns,Tom Theuns,Claudio Dalla Vecchia,Claudio Dalla Vecchia,Carlos S. Frenk,Ian G. McCarthy,John C. Helly,Adrian Jenkins,Yetli Rosas-Guevara,Simon D. M. White,Maarten Baes,C. M. Booth,C. M. Booth,Peter Camps,Julio F. Navarro,Yan Qu,Alireza Rahmati,Till Sawala,Peter A. Thomas,James W. Trayford +24 more
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STRONG NEBULAR LINE RATIOS IN THE SPECTRA of z ∼ 2-3 STAR FORMING GALAXIES: FIRST RESULTS FROM KBSS-MOSFIRE*
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TL;DR: In this paper, the authors used high-resolution cosmological zoom-in simulations from the Feedback in Realistic Environment (FIRE) project to study the galaxy mass-metallicity relations (MZR) from z=0-6.
References
More filters
Journal ArticleDOI
The relationship between infrared, optical, and ultraviolet extinction
TL;DR: In this article, the average extinction law over the 3.5 micron to 0.125 wavelength range was derived for both diffuse and dense regions of the interstellar medium. And the validity of the law over a large wavelength interval suggests that the processes which modify the sizes and compositions of grains are stochastic in nature.
Journal ArticleDOI
Stellar population synthesis at the resolution of 2003
Gustavo Bruzual,Stephane Charlot +1 more
TL;DR: In this article, the spectral evolution of stellar populations at ages between 100,000 yr and 20 Gyr at a resolution of 3 A across the whole wavelength range from 3200 to 9500 A for a wide range of metallicities.
Journal ArticleDOI
Galactic stellar and substellar initial mass function
TL;DR: A review of the present-day mass function and initial mass function in various components of the Galaxy (disk, spheroid, young, and globular clusters) and in conditions characteristic of early star formation is presented in this paper.
Journal ArticleDOI
On the variation of the initial mass function
TL;DR: In this paper, the uncertainty inherent in any observational estimate of the IMF is investigated by studying the scatter introduced by Poisson noise and the dynamical evolution of star clusters, and it is found that this apparent scatter reproduces quite well the observed scatter in power-law index determinations, thus defining the fundamental limit within which any true variation becomes undetectable.
Book
Astrophysics of Gaseous Nebulae and Active Galactic Nuclei
TL;DR: In this paper, a comparison of theory with observations internal dynamics of gaseous nebulae interstellar dust H II regions in the galactic context is presented. But the results are limited to the case of active galactic nuclei.
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