Mass, metal, and energy feedback in cosmological simulations

By B. Oppenheimer, R. Dav'e. 2007

427 citations recorded by the source corpus.

Using GADGET-2 cosmological hydrodynamic simulations including an observationally constrained model for galactic outflows, we investigate how feedback from star formation distributes mass, metals, and energy on cosmic scales from z = 6 → 0. We include instantaneous enrichment from Type II supernovae (SNe), as well as delayed enrichment from Type Ia SNe and stellar [asymptotic giant branch (AGB)] mass loss, and we individually track carbon, oxygen, silicon and iron using the latest yields. Following on the success of the momentum-driven wind scalings, we improve our implementation by using an on-the-fly galaxy finder to derive wind properties based on host galaxy masses. By tracking wind particles in a suite of simulations, we find: (1) wind material re-accretes on to a galaxy (usually the same one it left) on a recycling time-scale that varies inversely with galaxy mass (e.g. <1 Gyr for L ∗ galaxies at

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c3cc9c10a35db1cc0b5aa43855d3b800e3ae0f2c

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In Astronomy and Astrophysics

  1. P. Hopkins
  2. L. Hernquist
  3. Volker Springel
  4. R. Dav'e
  5. R. Somerville
  6. T. Naab
  7. A. Dekel
  8. C. Faucher-Giguére

In Nuclear and High Energy Physics

  1. Volker Springel
  2. P. Hopkins
  3. L. Hernquist
  4. C. Faucher-Giguére
  5. E. Quataert
  6. Andrey V. Kravtsov
  7. R. Dav'e
  8. James S. Bullock

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