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Star formation rate in simulated clusters

Journal
Date Issued
2020
Author(s)
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Bassini, L.
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Valentini, M.
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Dolag, K.
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Ragone-Figueroa, C.
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Abstract
The star formation rate (SFR) of simulated galaxy clusters is compared to recent observational studies at z=0 and z∼2. In particular, we analyze a set of zoom-in cosmological hydrodynamical simulations centered on twelve clusters and carried out with the GADGET-3 TreePM/SPH code. We find that simulated central galaxies produce an excess of stars at z=0, however at z∼2 simulations under-predict the normalization of the relation SFR-stellar mass of star forming galaxies by a factor of about 3 and are unable to reproduce the observed starburst population. We conclude that the adopted sub-grid model for star formation (Springel & Hernquist 2003), introduced to reproduce the self-regulated evolution of quiescent galaxies, is not suitable to describe violent events like high-redshift starbursts, independently of the choice of the parameters for the star formation and active-galactic-nuclei models. A more extensive analysis is present in Bassini et al. (2020).
Volume
91
Start page
332
Uri
Url
Issn Identifier
0037-8720
Ads BibCode
2020MmSAI..91..332R
Rights
open.access
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