Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/34453
DC Field | Value | Language |
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dc.contributor.author | SARACCO, Paolo | en_US |
dc.contributor.author | GARGIULO, ADRIANA | en_US |
dc.contributor.author | LA BARBERA, Francesco | en_US |
dc.contributor.author | Annunziatella, M. | en_US |
dc.contributor.author | Marchesini, D. | en_US |
dc.date.accessioned | 2023-10-11T11:23:57Z | - |
dc.date.available | 2023-10-11T11:23:57Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/34453 | - |
dc.description.abstract | We present spectroscopic observations obtained at the Large Binocular Telescope in the field of the cluster XLSSJ0223-0436 at z = 1.22. We confirm 12 spheroids cluster members and determine stellar velocity dispersion for 7 of them. We combine these data with those in the literature for clusters RXJ0848+4453 at z = 1.27 (8 galaxies) and XMMJ2235-2557 at z = 1.39 (7 galaxies) to determine the Fundamental Plane (FP) of cluster spheroids. We find that the FP at z ∼ 1.3 is offset and rotated (∼3σ) with respect to the local FP. The offset corresponds to a mean evolution Δlog(Mdyn/L) = (-0.5 ± 0.1)z. High-redshift galaxies follow a steeper mass-dependent Mdyn/L-Mdyn relation than local ones. Assuming Δ log(Mdyn/L) = Δ log(M*/L), higher mass galaxies [log(Mdyn/M⊙) ≥ 11.5] have a higher formation redshift (zf ≥ 6.5) than lower mass ones [z ≤2 for log(Mdyn/M⊙≤ 10)], with a median zf ≃ 2.5 for the whole sample. Also, galaxies with higher stellar mass density host stellar populations formed earlier than those in lower density galaxies. At fixed initial mass function, Mdyn/M* varies systematically with mass and mass density. It follows that the evolution of the stellar populations (M*/L) accounts for the observed evolution of Mdyn/L for Mdyn> 10^11 M⊙ galaxies, while accounts for ∼85 per cent of the evolution at M<SUB>dyn</SUB> < 10^11</SUP> M⊙. We find no evidence in favour of structural evolution of individual galaxies, while we find evidences that spheroids later added to the population may account for the observed discrepancy between Δlog(Mdyn/L) and Δ log(M*/L) at masses <10^11<M⊙. Thus, the evolution of the FP of cluster spheroids is consistent with the mass-dependent and mass density-dependent evolution of their stellar populations superimposed to a minor contribution of spheroids joining the population at later times. | en_US |
dc.language.iso | eng | en_US |
dc.title | The Fundamental Plane of cluster spheroidal galaxies at z ∼ 1.3: evidence for mass-dependent evolution | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz3109 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 491 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 1777 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | ESP | 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 | 2020MNRAS.491.1777S | 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. Brera | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | O.A. Capodimonte | - |
crisitem.author.orcid | 0000-0003-3959-2595 | - |
crisitem.author.orcid | 0000-0002-3351-1216 | - |
crisitem.author.orcid | 0000-0003-1181-6841 | - |
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 | |
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stz3109.pdf | PDF editoriale | 1.92 MB | Adobe PDF | View/Open |
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