Skip to Main content Skip to Navigation
Journal articles

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

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 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 interstellar medium, 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.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03711222
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Saturday, July 2, 2022 - 2:19:22 PM
Last modification on : Monday, July 4, 2022 - 3:33:58 AM

File

sty849.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Nicolas Guillard, Eric Emsellem, Florent Renaud. The impact of radiation feedback on the assembly of star clusters in a galactic context. Monthly Notices of the Royal Astronomical Society, 2018, 477, pp.5001-5010. ⟨10.1093/mnras/sty849⟩. ⟨insu-03711222⟩

Share

Metrics

Record views

12

Files downloads

3