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The gas-phase metallicity of low-mass galaxies increases with increasing stellar mass ($M_\ast$) and is nearly constant for high-mass galaxies. Theory suggests that this tight mass-metallicity relationship is shaped by galactic outflows…

Astrophysics of Galaxies · Physics 2018-09-12 J. Chisholm , C. Tremonti , C. Leitherer

The distribution of gas-phase metals within galaxies encodes the impact of stellar feedback on galactic evolution. At high-redshift, when galaxies are rapidly assembling, feedback-driven outflows and turbulence can strongly reshape radial…

Metallicity is a fundamental probe for understanding the baryon physics in a galaxy. Since metals are intricately associated with radiative cooling, star formation, and feedback, reproducing the observed metal distribution through numerical…

Astrophysics of Galaxies · Physics 2021-08-16 Eun-jin Shin , Ji-hoon Kim , Boon Kiat Oh

Recent observations suggest a nearly constant gas-phase mass-metallicity relation (MZR) at $z \gtrsim 5$, in agreement with many theoretical predictions. This lack of evolution contrasts with observations at $z \lesssim 3$, which find an…

Astrophysics of Galaxies · Physics 2025-08-22 Andrew Marszewski , Claude-André Faucher-Giguère , Robert Feldmann , Guochao Sun

(Abridged) We build a theoretical model to study the origin of the globular cluster metallicity bimodality in the hierarchical galaxy assembly scenario, based on the observed galaxy mass-[O/H] relation and the galaxy stellar mass function…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Chiara Tonini

We study oxygen abundance profiles of the gaseous disc components in simulated galaxies in a hierarchical universe. We analyse the disc metallicity gradients in relation to the stellar masses and star formation rates of the simulated…

Astrophysics of Galaxies · Physics 2016-01-27 Patricia B. Tissera , Susana E. Pedrosa , Emanuel Sillero , Jose M. Vilchez

We investigate the environmental dependence of the gas-phase metallicity for galaxies at $z=0$ to $z\gtrsim 2$ and the underlying physical mechanisms driving this dependence using state-of-the-art cosmological hydrodynamical simulations. We…

Astrophysics of Galaxies · Physics 2023-07-24 Kai Wang , Xin Wang , Yangyao Chen

The mass-metallicity relation is a fundamental galaxy scaling law that has been extended to the faintest systems in the Local Group. We show that the small scatter in this relation, which has been used to argue against tidal mass loss in…

We study the mass-metallicity relation of galactic systems with stellar masses larger than 10^9 Mo in Lambda-CDM scenarios by using chemical hydrodynamical simulations. We find that this relation arises naturally as a consequence of the…

Astrophysics · Physics 2009-11-13 Patricia B. Tissera , Maria E. De Rossi , C. Scannapieco

We present the evolution of the mass-metallicity (MZ) relations at z=4-10 derived with 135 galaxies identified in the JWST/NIRSpec data taken from the three major public spectroscopy programs of ERO, GLASS, and CEERS. Because there are many…

Astrophysics of Galaxies · Physics 2023-05-10 Kimihiko Nakajima , Masami Ouchi , Yuki Isobe , Yuichi Harikane , Yechi Zhang , Yoshiaki Ono , Hiroya Umeda , Masamune Oguri

We analyze the metal accumulation in dwarf and spiral galaxies by following the history of metal enrichment and outflows in a suite of twenty high-resolution simulated galaxies. These simulations agree with the observed stellar and…

Astrophysics of Galaxies · Physics 2018-11-28 Charlotte R. Christensen , Romeel Dave , Alyson Brooks , Thomas Quinn , Sijing Shen

We present a census of the mass density of metals and their evolution with cosmic time on a global scale throughout the Universe, synthesizing robust estimates of metals in stars, hot intra-cluster gas, and gaseous absorbers tracing neutral…

Astrophysics of Galaxies · Physics 2025-07-15 Saloni Deepak , J. Christopher Howk , Nicolas Lehner , Céline Péroux

We perform an statistical analysis of galaxies in pairs in a Lambda-CDM scenario by using the chemical GADGET-2 of Scannapieco et al. (2005) in order to study the effects of galaxy interactions on colours and metallicities. We find that…

Numerical simulations of standard cosmological scenarios have now reached the degree of sophistication required to provide tentative answers to the fundamental question: Where and when were the heavy elements formed? Averaging globally,…

Astrophysics · Physics 2011-02-11 Renyue Cen , Jeremiah P. Ostriker

We use the 30 simulations of the Auriga Project to estimate the temporal dependency of the inflow, outflow and net accretion rates onto the discs of Milky Way-like galaxies. The net accretion rates are found to be similar for all galaxies…

We analyse luminosity-weighted ages and metallicity (Z) of galaxies in a continuous range of environments, i.e. clusters, filaments and voids prevalent in the Coma supercluster ($\sim 100 h^{-1}$ Mpc). Specifically, we employ two absorption…

Astrophysics of Galaxies · Physics 2020-06-24 Juhi Tiwari , Smriti Mahajan , Kulinder Pal Singh

Little is known about the mass-metallicity relation (MZR) in galaxies at cosmic dawn. Studying the first appearance of the MZR is one of the keys to understanding the formation and evolution of the first galaxies. In order to lay the…

Astrophysics of Galaxies · Physics 2020-04-15 Ivanna Langan , Daniel Ceverino , Kristian Finlator

Metallicity is a fundamental physical property that strongly constrains galaxy formation and evolution. The formation of stars in galaxies is suppressed by the energy released from supernova explosions and can be enhanced by metal…

Astrophysics of Galaxies · Physics 2023-10-26 Dyna Ibrahim , Chiaki Kobayashi

The recent decade has seen an exponential growth in spatially-resolved metallicity measurements in the interstellar medium (ISM) of galaxies. To first order, these measurements are characterised by the slope of the radial metallicity…

We ask how the inclusion of various physical heating processes due to the metal content of gas affect the evolution of massive galaxies and compute a suite of cosmological hydrodynamical simulations that follow these systems and their…

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