Advanced

The impact of radiation feedback on the assembly of star clusters in a galactic context

Guillard, Nicolas ; Emsellem, Eric and Renaud, Florent LU (2018) In Monthly Notices of the Royal Astronomical Society 477(4). p.5001-5010
Abstract

Massive star clusters are observed in galaxies spanning a broad range of luminosities and types, and are assumed to form in dense gas-rich environments. Using a parsec-resolution hydrodynamical simulation of an isolated gas-rich low-mass galaxy, we discuss here the non-linear effects of stellar feedback on the properties of star clusters with a focus on the progenitors of nuclear clusters. Our simulation shows two categories of star clusters: those for which feedback expels gas leftovers associated with their formation sites, and those, in a denser environment, around which feedback fails to totally clear the gas. We confirm that radiation feedback (photoionization and radiative pressure) plays a more important role than Type II... (More)

Massive star clusters are observed in galaxies spanning a broad range of luminosities and types, and are assumed to form in dense gas-rich environments. Using a parsec-resolution hydrodynamical simulation of an isolated gas-rich low-mass galaxy, we discuss here the non-linear effects of stellar feedback on the properties of star clusters with a focus on the progenitors of nuclear clusters. Our simulation shows two categories of star clusters: those for which feedback expels gas leftovers associated with their formation sites, and those, in a denser environment, around which feedback fails to totally clear the gas. We confirm that radiation feedback (photoionization and radiative pressure) plays a more important role than Type II supernovae in destroying dense gas structures, and in altering or quenching the subsequent cluster formation. Radiation feedback also disturbs the cluster mass growth, by increasing the internal energy of the gas component to the point at which radiation pressure overcomes the cluster gravity. We discuss how these effects may depend on the local properties of the interstellarmedium, and also on the details of the subgrid recipes,which can affect the available cluster gas reservoirs, the evolution of potential nuclear cluster progenitors, and the overall galaxy morphology.

(Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Galaxy: evolution, ISM: structure, Methods: numerical
in
Monthly Notices of the Royal Astronomical Society
volume
477
issue
4
pages
10 pages
publisher
Oxford University Press
external identifiers
  • scopus:85052484401
ISSN
0035-8711
DOI
10.1093/MNRAS/STY849
language
English
LU publication?
yes
id
1e1808f2-9f9d-4281-a412-2f2f4f8fcf56
date added to LUP
2018-09-27 09:42:44
date last changed
2020-03-24 06:23:06
@article{1e1808f2-9f9d-4281-a412-2f2f4f8fcf56,
  abstract     = {<p>Massive star clusters are observed in galaxies spanning a broad range of luminosities and types, and are assumed to form in dense gas-rich environments. Using a parsec-resolution hydrodynamical simulation of an isolated gas-rich low-mass galaxy, we discuss here the non-linear effects of stellar feedback on the properties of star clusters with a focus on the progenitors of nuclear clusters. Our simulation shows two categories of star clusters: those for which feedback expels gas leftovers associated with their formation sites, and those, in a denser environment, around which feedback fails to totally clear the gas. We confirm that radiation feedback (photoionization and radiative pressure) plays a more important role than Type II supernovae in destroying dense gas structures, and in altering or quenching the subsequent cluster formation. Radiation feedback also disturbs the cluster mass growth, by increasing the internal energy of the gas component to the point at which radiation pressure overcomes the cluster gravity. We discuss how these effects may depend on the local properties of the interstellarmedium, and also on the details of the subgrid recipes,which can affect the available cluster gas reservoirs, the evolution of potential nuclear cluster progenitors, and the overall galaxy morphology.</p>},
  author       = {Guillard, Nicolas and Emsellem, Eric and Renaud, Florent},
  issn         = {0035-8711},
  language     = {eng},
  month        = {07},
  number       = {4},
  pages        = {5001--5010},
  publisher    = {Oxford University Press},
  series       = {Monthly Notices of the Royal Astronomical Society},
  title        = {The impact of radiation feedback on the assembly of star clusters in a galactic context},
  url          = {http://dx.doi.org/10.1093/MNRAS/STY849},
  doi          = {10.1093/MNRAS/STY849},
  volume       = {477},
  year         = {2018},
}