Modelling H<sub>2</sub> and its effects on star formation using a joint implementation of gadget-3 and KROME

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dc.contributor.authorSillero, Emanuel
dc.contributor.authorTissera, Patricia B.
dc.contributor.authorLambas, Diego G.
dc.contributor.authorBovino, Stefano
dc.contributor.authorSchleicher, Dominik R.
dc.contributor.authorGrassi, Tommaso
dc.contributor.authorBruzual, Gustavo
dc.contributor.authorCharlot, Stephane
dc.date.accessioned2025-01-20T22:02:21Z
dc.date.available2025-01-20T22:02:21Z
dc.date.issued2021
dc.description.abstractWe present p-gadget3-k, an updated version of gadget-3, that incorporates the chemistry package krome. p-gadget3-k follows the hydrodynamical and chemical evolution of cosmic structures, incorporating the chemistry and cooling of H-2 and metal cooling in non-equilibrium. We performed different runs of the same ICs to assess the impact of various physical parameters and prescriptions, namely gas metallicity, molecular hydrogen formation on dust, star formation recipes including or not H-2 dependence, and the effects of numerical resolution. We find that the characteristics of the simulated systems, both globally and at kpc-scales, are in good agreement with several observable properties of molecular gas in star-forming galaxies. The surface density profiles of star formation rate (SFR) and H-2 are found to vary with the clumping factor and resolution. In agreement with previous results, the chemical enrichment of the gas component is found to be a key ingredient to model the formation and distribution of H-2 as a function of gas density and temperature. A star formation algorithm that takes into account the H-2 fraction together with a treatment for the local stellar radiation field improves the agreement with observed H-2 abundances over a wide range of gas densities and with the molecular Kennicutt-Schmidt law, implying a more realistic modelling of the star formation process.
dc.fuente.origenWOS
dc.identifier.doi10.1093/mnras/stab1015
dc.identifier.eissn1365-2966
dc.identifier.issn0035-8711
dc.identifier.urihttps://doi.org/10.1093/mnras/stab1015
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93970
dc.identifier.wosidWOS:000659453800053
dc.issue.numero2
dc.language.isoen
dc.pagina.final2345
dc.pagina.inicio2325
dc.revistaMonthly notices of the royal astronomical society
dc.rightsacceso restringido
dc.subjectmethods: numerical
dc.subjectISM: molecules
dc.subjectgalaxies: evolution
dc.subjectgalaxies: ISM
dc.titleModelling H<sub>2</sub> and its effects on star formation using a joint implementation of gadget-3 and KROME
dc.typeartículo
dc.volumen504
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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