Modeling dust in a universe of galaxies

Desika Narayanan, Qi Li, Romeel Davé, Charlie Conroy, Benjamin D. Johnson, Gergo Popping

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this invited talk, we discuss the physics of the lifecycle of dust in the context of galaxy formation simulations. After outlining the basic physical processes, we apply algorithms for the formation, growth, and destruction of dust in the ISM to a state-of-the-art cosmological simulation to develop a model for the evolution of the dust to gas and dust to metals ratios in galaxies. We show that while modern simulations are able to match the observed dust mass function at redshift z = 0, most models underpredict the observed mass function at high-redshift (z = 2). We then show the power of these techniques by expanding our model to include a spectrum of dust sizes, and make initial predictions for extinction laws in local galaxies.

Original languageEnglish (US)
Title of host publicationProceedings of the International Astronomical Union
EditorsElisabete da Cunha, Elisabete da Cunha, Jacqueline Hodge, Jose Afonso, Laura Pentericci, David Sobral
PublisherCambridge University Press
Pages44-54
Number of pages11
Edition352
ISBN (Electronic)9781108492133
DOIs
StatePublished - 2020
Event352nd Symposium of the International Astronomical Union on Uncovering Early Galaxy Evolution in the ALMA and JWST Era - Viana do Castelo, Portugal
Duration: Jun 3 2019Jun 7 2019

Publication series

NameProceedings of the International Astronomical Union
Number352
Volume15
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

Conference

Conference352nd Symposium of the International Astronomical Union on Uncovering Early Galaxy Evolution in the ALMA and JWST Era
Country/TerritoryPortugal
CityViana do Castelo
Period6/3/196/7/19

Keywords

  • extinction
  • galaxies: formation
  • galaxies: ISM
  • ISM: dust

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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