Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/31972
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | ZIBETTI, Stefano | en_US |
dc.contributor.author | GALLAZZI, Anna Rita | en_US |
dc.contributor.author | Hirschmann, Michaela | en_US |
dc.contributor.author | Consolandi, Guido | en_US |
dc.contributor.author | Falcón-Barroso, Jesús | en_US |
dc.contributor.author | van de Ven, Glenn | en_US |
dc.contributor.author | Lyubenova, Mariya | en_US |
dc.date.accessioned | 2022-03-28T14:58:18Z | - |
dc.date.available | 2022-03-28T14:58:18Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31972 | - |
dc.description.abstract | We perform spatially resolved stellar population analysis for a sample of 69 early-type galaxies (ETGs) from the CALIFA integral field spectroscopic survey, including 48 ellipticals and 21 S0's. We generate and quantitatively characterize profiles of light-weighted mean stellar age and metallicity within ≲2R<SUB>e</SUB>, as a function of radius and stellar-mass surface density μ<SUB>*</SUB>. We study in detail the dependence of profiles on galaxies' global properties, including velocity dispersion σ<SUB>e</SUB>, stellar mass, morphology. ETGs are universally characterized by strong, negative metallicity gradients (∼ -0.3 dex per R<SUB>e</SUB>) within 1R<SUB>e</SUB>, which flatten out moving towards larger radii. A quasi-universal local μ<SUB>*</SUB>-metallicity relation emerges, which displays a residual systematic dependence on σ<SUB>e</SUB>, whereby higher σ<SUB>e</SUB> implies higher metallicity at fixed μ<SUB>*</SUB>. Age profiles are typically U-shaped, with minimum around 0.4 R<SUB>e</SUB>, asymptotic increase to maximum ages beyond ∼ 1.5 R<SUB>e</SUB>, and an increase towards the centre. The depth of the minimum and the central increase anticorrelate with σ<SUB>e</SUB>. A possible qualitative interpretation of these observations is a two-phase scenario. In the first phase, dissipative collapse occurs in the inner 1R<SUB>e</SUB>, establishing a negative metallicity gradient. The competition between the outside-in quenching due to feedback-driven winds and some form of inside-out quenching, possibly caused by central AGN feedback or dynamical heating, determines the U-shaped age profiles. In the second phase, the accretion of ex-situ stars from quenched and low-metallicity satellites shapes the flatter stellar population profiles in the outer regions. | en_US |
dc.language.iso | eng | en_US |
dc.title | Insights into formation scenarios of massive early-type galaxies from spatially resolved stellar population analysis in CALIFA | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz3205 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/491/3/3562/5640472 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 491 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 3562 | en_US |
dc.type.referee | REF_1 | 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 | 2020MNRAS.491.3562Z | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation | 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.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0003-1734-8356 | - |
crisitem.author.orcid | 0000-0002-9656-1800 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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stz3205.pdf | Pdf editoriale | 8.76 MB | Adobe PDF | Visualizza/apri |
1906.02209.pdf | preprint | 6.9 MB | Adobe PDF | Visualizza/apri |
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