Studying galactic chemical properties by using cosmological numerical simulations

Patricia B. Tissera, Cecilia Scannapieco

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

Resumen

We developed a chemical code within GADGET2 which allows the description of the enrichment of the Universe as a function of redshift, taking into account detailed metal production by supernovae Ia and II, and metal-dependent cooling. This is the first numerical code that includes both chemical production and metal-dependent cooling in a cosmological context. By analysing the cosmic star formation rate, we found that the effects of considering a metal-dependent cooling are important, principally, for z ≤ 3. In simulations where primordial cooling functions are used, the comoving star formation rate could be up to 20%; lower than those obtained in runs with metal-dependent cooling functions. Within galaxy-like objects, the presence of chemical elements changes the star-formation rates and, consequently, the chemical production and patterns of stars. However, owing to non-linear evolution of the structure, the effects depend on the evolutionary history path of each galaxy-like object.

Idioma originalInglés
Páginas (desde-hasta)192-196
Número de páginas5
PublicaciónPublications of the Astronomical Society of Australia
Volumen21
N.º2
DOI
EstadoPublicada - 2004

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ciencias planetarias y espacial

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