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Related papers: The Gas-phase Metallicity Profiles of Star-forming…

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We compare atomic gas, molecular gas, and the recent star formation rate (SFR) inferred from H-alpha in the Small Magellanic Cloud (SMC). By using infrared dust emission and local dust-to-gas ratios, we construct a map of molecular gas that…

Explaining the internal distribution and motions of stars and gas in galaxies is a key aspect in understanding their evolution. In previous work we identified five well resolved galaxies with atypical kinematics from a cosmological…

Astrophysics of Galaxies · Physics 2019-03-13 Philip Taylor , Chiaki Kobayashi , Christoph Federrath

To understand star formation in galaxies, we investigate the star formation rate (SFR) surface density ($\Sigma_{\rm SFR}$) profiles for galaxies, based on a well-defined sample of 976 star-forming MaNGA galaxies. We find that the typical…

Astrophysics of Galaxies · Physics 2019-06-12 Enci Wang , Simon J. Lilly , Gabriele Pezzulli , Jorryt Matthee

An analytical chemical evolution model is constructed to investigate the radial distribution of gas-phase and stellar metallicity for star-forming galaxies. By means of the model, the gas-phase and stellar metallicity can be obtained from…

Astrophysics of Galaxies · Physics 2021-01-27 Xiaoyu Kang , Ruixiang Chang , Rolf-Peter Kudritzki , Xiaobo Gong , Fenghui Zhang

We exploit the SDSS galaxy groups catalogue of Yang et al. to study how the gas-phase metallicities of star-forming galaxies depend on environment. We find that satellite and central galaxies follow a qualitatively similar stellar mass…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Anna Pasquali , Anna Gallazzi , Frank C. van den Bosch

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 use a sample of 43,690 galaxies selected from the Sloan Digital Sky Survey Data Release 4 to study the systematic effects of specific star formation rate (SSFR) and galaxy size (as measured by the half light radius, r_h) on the…

Astrophysics · Physics 2009-11-13 Sara L. Ellison , David R. Patton , Luc Simard , Alan W. McConnachie

We analyse the evolution of the oxygen abundance gradient of star-forming galaxies with stellar mass Mstar > 10^9 Mo in the EAGK simulation over the redshift range z=[0, 2.5]. We find that the median metallicity gradient of the simulated…

Astrophysics of Galaxies · Physics 2022-01-05 Patricia B. Tissera , Yetli Rosas-Guevara , Emanuel Sillero , Susana E. Pedrosa , Tom Theuns , Lucas Bignone

The gas-phase metallicity of galaxies encodes important information about galaxy evolution processes, in particular star formation, feedback, outflows and gas accretion, the relative importance of which can be extracted from systematic…

Astrophysics of Galaxies · Physics 2023-12-27 Nancy Yang , Dirk Scholte , Amelie Saintonge

We investigate the disk formation process in the TNG50 simulation, examining the profiles of SFR surface density ($\Sigma_{\rm SFR}$), gas inflow and outflow, and the evolution of the angular momentum of inflowing gas particles. The TNG50…

Astrophysics of Galaxies · Physics 2023-08-07 Enci Wang , Simon J. Lilly

Recent results have suggested that the well known mass-metallicity relation has a strong dependence on the star formation rate, to the extent that a three dimensional `fundamental metallicity relation' exists which links the three…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 M. S. Bothwell , R. Maiolino , R. Kennicutt. , G. Cresci , F. Mannucci , A. Marconi , C. Cicone

Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and alpha elements. A model is chosen that provides an excellent…

Astrophysics · Physics 2015-05-13 Ralph Schoenrich , James Binney

The abundance gradients and the radial gas profile of the Galactic disc are analysed by means of a model for the chemical evolution of galaxies. As one of the major uncertainties in models for galaxy evolution is the star formation (SF)…

Astrophysics · Physics 2007-05-23 L. Portinari , C. Chiosi

As part of the Bluedisk survey we analyse the radial gas-phase metallicity profiles of 50 late-type galaxies We compare the metallicity profiles of a sample of HI-rich galaxies against a control sample of HI-'normal' galaxies. We find the…

Studying the evolution of dwarf galaxies can provide insights into the characteristics of systems that can act as building blocks of massive galaxies. This paper discusses the history of star formation and gas flows (inflow and outflow) of…

Astrophysics of Galaxies · Physics 2020-01-08 Nao Fukagawa

The GalICS (Galaxies in Cosmological Simulations) semi-analytical model of hierar- chical galaxy formation is used to investigate the effects of different galactic properties, including star formation rate (SFR) and outflows, on the shape…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-17 Jeremy Sakstein , Antonio Pipino , Julien Devriendt , Roberto Maiolino

We present an analysis of spatially resolved gas-phase metallicity relations in five dwarf galaxies ($M_{halo} \approx 10^{11} M_\odot$, $M_\star \approx 10^{8.8}-10^{9.6} M_\odot$) from the FIRE-2 (Feedback in Realistic Environments)…

Star formation rates (SFRs), gas-phase metallicities, and stellar masses are crucial for studying galaxy evolution. The different relations resulting from these properties give insights into the complex interplay of gas inside galaxies and…

To understand the formation and evolution of galaxies, it is important to have a full comprehension of the role played by the metallicity, star formation rate (SFR), morphology, and color. The interplay of these parameters at different…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 M. A. Lara-Lopez , A. Bongiovanni , J. Cepa , A. M. Perez Garcia , M. Sanchez-Portal , H. O. Castaneda , M. Fernandez Lorenzo , M. Povic

The star formation rates (SFRs) and metallicities of a sample of 294 galaxies with visually classified, strong, large-scale bars are compared to a control sample of unbarred disk galaxies selected from the Sloan Digital Sky Survey Data…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 Sara L. Ellison , Preethi Nair , David R. Patton , Jillian M. Scudder , J. Trevor Mendel , Luc Simard