The formation and evolution of massive galaxies

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dc.contributor.authorJing, Ying-Jie
dc.contributor.authorRong, Yu
dc.contributor.authorWang, Jie
dc.contributor.authorGuo, Qi
dc.contributor.authorGao, Liang
dc.date.accessioned2025-01-20T22:05:52Z
dc.date.available2025-01-20T22:05:52Z
dc.date.issued2021
dc.description.abstractThe discovery of massive galaxies at high redshifts, especially the passive ones, poses a big challenge for the current standard galaxy formation models. Here we use the semi-analytic galaxy formation model developed by Henriques et al. to explore the formation and evolution of massive galaxies (MGs, stellar-mass M-* > 10(11) M-circle dot). Different from previous works, we focus on the ones just formed (e.g. just reach similar or equal to 10(11) M-circle dot). We find that most of the MGs are formed around z = 0.6, with the earliest formation at z > 4. Interestingly, although most of the MGs in the local Universe are passive, we find that only 13% of the MGs are quenched at the formation time. Most of the quenched MGs at formation already host a very massive supermassive black hole (SMBH) which could power the very effective AGN feedback. For the star-forming MGs, the ones with more massive SMBH prefer to quench in shorter timescales; in particular, those with M-SMBH > 10(7.5) M-circle dot have a quenching timescale of similar to 0.5 Gyr and the characteristic M-SMBH depends on the chosen stellar mass threshold in the definition of MGs as a result of their co-evolution. We also find that the "in-situ" star formation dominates the stellar mass growth of MGs until they are formed. Over the whole redshift range, we find the quiescent MGs prefer to stay in more massive dark matter halos, and have more massive SMBH and less cold gas masses. Our results provide a new angle on the whole life of the growth of MGs in the Universe.
dc.fuente.origenWOS
dc.identifier.doi10.1088/1674-4527/21/9/218
dc.identifier.eissn2397-6209
dc.identifier.issn1674-4527
dc.identifier.urihttps://doi.org/10.1088/1674-4527/21/9/218
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/94172
dc.identifier.wosidWOS:000714210200001
dc.issue.numero9
dc.language.isoen
dc.revistaResearch in astronomy and astrophysics
dc.rightsacceso restringido
dc.subjectgalaxies: evolution
dc.subjectgalaxies: formation
dc.subjectgalaxies: star formation
dc.subjectgalaxies: high-redshift
dc.subjectmethods: numerical
dc.titleThe formation and evolution of massive galaxies
dc.typeartículo
dc.volumen21
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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