Dust Evolution in Galaxy and Galaxy Cluster Models

A special issue of Galaxies (ISSN 2075-4434).

Deadline for manuscript submissions: closed (4 March 2022) | Viewed by 5255

Special Issue Editor


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Guest Editor
Istituto Nazionale di Astrofisica (INAF). Osservatorio Astronomico di Trieste, 35122 Padova, Italy
Interests: galaxy formation; numerical simulations; semi-analytical models; dust reprocessing

Special Issue Information

Dear Colleagues,

Dust is a complex, active and evolving component of Inter Stellar Medium (ISM) and of the Intra Cluster Medium (ICM). It participates in the processes of gas heating and cooling, catalyzes the formation of molecular gas, strongly modifies the radiation field in astrophysical systems. Dust particles increase the radiative pressure on ISM. As such, dust affect both star formation, as well as stellar and AGN feedback in galaxies. Moreover, it significantly reshapes their spectral energy distribution. These processes depends strongly on both the chemical composition, as well as the size distribution of dust grains, which in turn are theoretically expected and observationally known to evolve with time, and to depend on the ISM environment. Thus, a proper understanding of galaxy formation and evolution, and a comparison between models and data requires a treatment of the evolution of dust properties, and a modeling of the effect of dust on galaxy evolution. This is a relatively unexplored topic. Most of the published work in this direction has been in the context of one-zone or monolithic models. Only in last few years have some efforts begun to be done in cosmological simulations and semi analytic galaxy formation models.

This Special Issue aims to collect papers on models of the evolution of dust in the ISM and ICM in cosmological contexts, and on the physical processes that are relevant for these kinds of computations. Review papers are also welcome.

Dr. Gian Luigi Granato
Guest Editor

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Keywords

  • ISM: dust
  • galaxies: evolution
  • galaxies: ISM
  • clusters: evolution
  • clusters: ICM
  • methods: numerical

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Published Papers (1 paper)

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Review

60 pages, 6439 KiB  
Review
Rotational Disruption of Astrophysical Dust and Ice—Theory and Applications
by Thiem Hoang
Galaxies 2020, 8(3), 52; https://doi.org/10.3390/galaxies8030052 - 6 Jul 2020
Cited by 28 | Viewed by 4486
Abstract
Dust is an essential component of the interstellar medium (ISM) and plays an important role in many different astrophysical processes and phenomena. Traditionally, dust grains are known to be destroyed by thermal sublimation, Coulomb explosions, sputtering, and shattering. The first two mechanisms arise [...] Read more.
Dust is an essential component of the interstellar medium (ISM) and plays an important role in many different astrophysical processes and phenomena. Traditionally, dust grains are known to be destroyed by thermal sublimation, Coulomb explosions, sputtering, and shattering. The first two mechanisms arise from the interaction of dust with intense radiation fields and high-energy photons (extreme UV), which work in a limited astrophysical environment. The present review is focused on a new destruction mechanism present in the dust-radiation interaction that is effective in a wide range of radiation fields and has ubiquitous applications in astrophysics. We first describe this new mechanism of grain destruction, namely rotational disruption induced by Radiative Torques (RATs) or RAdiative Torque Disruption (RATD). We then discuss rotational disruption of nanoparticles by mechanical torques due to supersonic motion of grains relative to the ambient gas, which is termed MEchanical Torque Disruption (METD). These two new mechanisms modify properties of dust and ice (e.g., size distribution and mass), which affects observational properties, including dust extinction, thermal and nonthermal emission, and polarization. We present various applications of the RATD and METD mechanisms for different environments, including the ISM, star-forming regions, astrophysical transients, and surface astrochemistry. Full article
(This article belongs to the Special Issue Dust Evolution in Galaxy and Galaxy Cluster Models)
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