FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045308516> ?p ?o ?g. }

• W2045308516 endingPage "2204" @default.
• W2045308516 startingPage "2181" @default.
• W2045308516 abstract "Using cosmological hydrodynamic simulations that dynamically incorporate enriched galactic outflows together with analytical modelling, we study the origin of the stellar mass–gas-phase metallicity relation (MZR). We find that metallicities are driven by an equilibrium between the rate of enrichment owing to star formation and the rate of dilution owing to infall of unenriched gas. This equilibrium is in turn governed by the outflow strength. As such, the MZR provides valuable insights and strong constraints on galactic outflow properties across cosmic time. We compare three outflow models: no outflows, a ‘constant-wind model that emulates the popular Dekel & Silk scenario, and a ‘momentum-driven wind’ model that best reproduces z≳ 2 intergalactic medium metallicity data. Only the momentum-driven wind scaling simulation is able to reproduce the observed z∼ 2 MZR's slope, amplitude, and scatter. In order to understand why, we construct a one-zone chemical evolution model guided by simulations. This model shows that the MZR in our outflow simulations can be understood in terms of three parameters: (i) the equilibrium metallicityZg,eq= y&#x004d;̇SFR/&#x004d;̇ACC (where y= net yield), reflecting the enrichment balance between star formation rate &#x004d;̇SFR and gas accretion rate &#x004d;̇ACC; (ii) the dilution time⁠, representing the time-scale for a galaxy to return to Zg,eq after a metallicity-perturbing interaction; and (iii) the blowout massMblowout, which is the galaxy stellar mass above which winds can escape its halo. Without outflows, galaxy metallicities exceed observations by approximately two to three times, although the slope of the MZR is roughly correct owing to greater star formation efficiencies in larger galaxies. When outflows with mass-loading factor ηW are present, galaxies below Mblowout obey Zg,eq≈y/(1 +ηW), while above Mblowout, Zg,eq→ y. Our constant-wind model has Mblowout∼ 1010 M⊙, which yields a sharp upturn in the MZR above this scale and a flat MZR with large scatter below it, in strong disagreement with observations. Our momentum-driven wind model naturally reproduces the observed Zg∝M0.3* because Zg,eq∝η−1W∝M1/3* when ηW≫ 1 (i.e. at low masses). The flattening of the MZR at M*≳ 1010.5 M⊙ observed by Tremonti et al. is reflective of the mass-scale where ηW∼ 1 rather than a characteristic outflow speed; in fact, the outflow speed plays little role in the MZR except through Mblowout. The tight observed MZR scatter is ensured when td≲ dynamical time, which is only satisfied at all masses in our momentum-driven wind model. We also discuss secondary effects on the MZR, such as baryonic stripping from neighbouring galaxies' outflows." @default.
• W2045308516 created "2016-06-24" @default.
• W2045308516 creator A5046307179 @default.
• W2045308516 creator A5062524975 @default.
• W2045308516 date "2008-04-01" @default.
• W2045308516 modified "2023-10-18" @default.
• W2045308516 title "The origin of the galaxy mass–metallicity relation and implications for galactic outflows" @default.
• W2045308516 cites W1964280853 @default.
• W2045308516 cites W1968974271 @default.
• W2045308516 cites W1969717379 @default.
• W2045308516 cites W1970440653 @default.
• W2045308516 cites W1974158458 @default.
• W2045308516 cites W1980904486 @default.
• W2045308516 cites W1987635305 @default.
• W2045308516 cites W2001085255 @default.
• W2045308516 cites W2001571758 @default.
• W2045308516 cites W2007775671 @default.
• W2045308516 cites W2009802717 @default.
• W2045308516 cites W2009810368 @default.
• W2045308516 cites W2013575191 @default.
• W2045308516 cites W2014525943 @default.
• W2045308516 cites W2015295900 @default.
• W2045308516 cites W2017047032 @default.
• W2045308516 cites W2025078251 @default.
• W2045308516 cites W2025913857 @default.
• W2045308516 cites W2026322635 @default.
• W2045308516 cites W2027929083 @default.
• W2045308516 cites W2030579627 @default.
• W2045308516 cites W2034435579 @default.
• W2045308516 cites W2035225065 @default.
• W2045308516 cites W2038375794 @default.
• W2045308516 cites W2039241537 @default.
• W2045308516 cites W2039632247 @default.
• W2045308516 cites W2039653171 @default.
• W2045308516 cites W2045028470 @default.
• W2045308516 cites W2045830033 @default.
• W2045308516 cites W2047798125 @default.
• W2045308516 cites W2051920470 @default.
• W2045308516 cites W2052315062 @default.
• W2045308516 cites W2054093933 @default.
• W2045308516 cites W2056287285 @default.
• W2045308516 cites W2058210847 @default.
• W2045308516 cites W2058889425 @default.
• W2045308516 cites W2059037849 @default.
• W2045308516 cites W2062564904 @default.
• W2045308516 cites W2065996612 @default.
• W2045308516 cites W2067857092 @default.
• W2045308516 cites W2074094455 @default.
• W2045308516 cites W2078562960 @default.
• W2045308516 cites W2082012530 @default.
• W2045308516 cites W2087250740 @default.
• W2045308516 cites W2100514692 @default.
• W2045308516 cites W2101447891 @default.
• W2045308516 cites W2116466430 @default.
• W2045308516 cites W2118265220 @default.
• W2045308516 cites W2125977823 @default.
• W2045308516 cites W2128808878 @default.
• W2045308516 cites W2132646102 @default.
• W2045308516 cites W2149072120 @default.
• W2045308516 cites W2160698992 @default.
• W2045308516 cites W3099051928 @default.
• W2045308516 cites W3099219422 @default.
• W2045308516 cites W3099338243 @default.
• W2045308516 cites W3099640725 @default.
• W2045308516 cites W3100024326 @default.
• W2045308516 cites W3100042939 @default.
• W2045308516 cites W3100482885 @default.
• W2045308516 cites W3100987540 @default.
• W2045308516 cites W3101857126 @default.
• W2045308516 cites W3102336554 @default.
• W2045308516 cites W3102628526 @default.
• W2045308516 cites W3103139228 @default.
• W2045308516 cites W3125341864 @default.
• W2045308516 cites W3125549286 @default.
• W2045308516 cites W4230630089 @default.
• W2045308516 cites W4298011861 @default.
• W2045308516 doi "https://doi.org/10.1111/j.1365-2966.2008.12991.x" @default.
• W2045308516 hasPublicationYear "2008" @default.
• W2045308516 type Work @default.
• W2045308516 sameAs 2045308516 @default.
• W2045308516 citedByCount "380" @default.
• W2045308516 countsByYear W20453085162012 @default.
• W2045308516 countsByYear W20453085162013 @default.
• W2045308516 countsByYear W20453085162014 @default.
• W2045308516 countsByYear W20453085162015 @default.
• W2045308516 countsByYear W20453085162016 @default.
• W2045308516 countsByYear W20453085162017 @default.
• W2045308516 countsByYear W20453085162018 @default.
• W2045308516 countsByYear W20453085162019 @default.
• W2045308516 countsByYear W20453085162020 @default.
• W2045308516 countsByYear W20453085162021 @default.
• W2045308516 countsByYear W20453085162022 @default.
• W2045308516 countsByYear W20453085162023 @default.
• W2045308516 crossrefType "journal-article" @default.
• W2045308516 hasAuthorship W2045308516A5046307179 @default.
• W2045308516 hasAuthorship W2045308516A5062524975 @default.
• W2045308516 hasBestOaLocation W20453085161 @default.
• W2045308516 hasConcept C121332964 @default.

• next