Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26743
DC Field | Value | Language |
---|---|---|
dc.contributor.author | FONTANOT, Fabio | en_US |
dc.contributor.author | DE LUCIA, GABRIELLA | en_US |
dc.contributor.author | Hirschmann, Michaela | en_US |
dc.contributor.author | Bruzual, Gustavo | en_US |
dc.contributor.author | Charlot, Stéphane | en_US |
dc.contributor.author | ZIBETTI, Stefano | en_US |
dc.date.accessioned | 2020-08-20T10:24:16Z | - |
dc.date.available | 2020-08-20T10:24:16Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26743 | - |
dc.description.abstract | In this paper, we investigate the implications of the integrated galaxy-wide stellar initial mass function (IGIMF) approach in the framework of the semi-analytical model GAEA (GAlaxy Evolution and Assembly), which features a detailed treatment of chemical enrichment and stellar feedback. The IGIMF provides an analytic description of the dependence of the stellar IMF shape on the rate of star formation in galaxies. We find that our model with a universal IMF predicts a rather flat [α/Fe]-stellar mass relation. The model assuming the IGIMF, instead, is able to reproduce the observed increase of α-enhancement with stellar mass, in agreement with previous studies. This is mainly due to the fact that massive galaxies are characterized by larger star formation rates at high redshift, leading to stronger α-enhancement with respect to low-mass galaxies. At the same time, the IGIMF hypothesis does not affect significantly the trend for shorter star formation time-scales for more massive galaxies. We argue that in the IGIMF scenario the [α/Fe] ratios are good tracers of the highest star formation events. The final stellar masses and mass-to-light ratio of our model massive galaxies are larger than those estimated from the synthetic photometry assuming a universal IMF, providing a self-consistent interpretation of similar recent results, based on dynamical analysis of local early-type galaxies. | en_US |
dc.language.iso | eng | en_US |
dc.title | Variations of the stellar initial mass function in semi-analytical models: implications for the mass assembly and the chemical enrichment of galaxies in the GAEA model | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stw2612 | en_US |
dc.identifier.scopus | 2-s2.0-85014874792 | en_US |
dc.identifier.isi | 000393780500004 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/464/4/3812/2525943 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 464 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 3812 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 6 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017MNRAS.464.3812F | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0003-4744-0188 | - |
crisitem.author.orcid | 0000-0002-6220-9104 | - |
crisitem.author.orcid | 0000-0003-1734-8356 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fontanot17a.pdf | PDF editoriale | 1.99 MB | Adobe PDF | View/Open |
Page view(s)
70
checked on Apr 19, 2024
Download(s)
18
checked on Apr 19, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.