Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/26254
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | García-Hernández, D. A. | en_US |
dc.contributor.author | VENTURA, Paolo | en_US |
dc.contributor.author | Delgado-Inglada, G. | en_US |
dc.contributor.author | Dell'Agli, Flavia | en_US |
dc.contributor.author | DI CRISCIENZO, Marcella | en_US |
dc.contributor.author | Yagüe, A. | en_US |
dc.date.accessioned | 2020-06-29T09:23:14Z | - |
dc.date.available | 2020-06-29T09:23:14Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26254 | - |
dc.description.abstract | The abundance of O in planetary nebulae (PNe) has been historically used as a metallicity indicator of the interstellar medium (ISM), where they originated; e.g. it has been widely used to study metallicity gradients in our Galaxy and beyond. However, clear observational evidence for O self-enrichment in low-metallicity Galactic PNe with C-rich dust has been recently reported. Here, we report asymptotic giant branch (AGB) nucleosynthesis predictions for the abundances of the CNO elements and helium in the metallicity range Z<SUB>☉</SUB>/4 < Z < 2 Z<SUB>☉</SUB>. Our AGB models, with diffusive overshooting from all the convective borders, predict that O is overproduced in low-Z low-mass (∼1-3 M<SUB>☉</SUB>) AGB stars and nicely reproduce the recent O overabundances observed in C-rich dust PNe. This confirms that O is not always a good proxy of the original ISM metallicity and other chemical elements such as Cl or Ar should be used instead. The production of oxygen by low-mass stars should be thus considered in galactic-evolution models. | en_US |
dc.language.iso | eng | en_US |
dc.title | Probing O-enrichment in C-rich dust planetary nebulae | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnrasl/slw029 | en_US |
dc.identifier.scopus | 2-s2.0-84963568324 | en_US |
dc.identifier.isi | 000374226300025 | en_US |
dc.identifier.url | https://academic.oup.com/mnrasl/article/458/1/118/2589747 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 458 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | L118 | en_US |
dc.relation.lastpage | L122 | en_US |
dc.relation.numberofpages | 5 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 6 | en_US |
dc.description.international | sì | 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 | en_US |
dc.identifier.adsbibcode | 2016MNRAS.458L.118G | 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.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. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.orcid | 0000-0002-5026-6400 | - |
crisitem.author.orcid | 0000-0003-2442-6981 | - |
crisitem.author.orcid | 0000-0003-4132-1209 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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