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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/31556
DC FieldValueLanguage
dc.contributor.authorPalmerini, Saraen_US
dc.contributor.authorBusso, Maurizioen_US
dc.contributor.authorVESCOVI, DIEGOen_US
dc.contributor.authorNaselli, Eugeniaen_US
dc.contributor.authorPidatella, Angeloen_US
dc.contributor.authorMucciola, Riccardoen_US
dc.contributor.authorCRISTALLO, Sergioen_US
dc.contributor.authorMascali, Daviden_US
dc.contributor.authorMengoni, Albertoen_US
dc.contributor.authorSimonucci, Stefanoen_US
dc.contributor.authorTaioli, Simoneen_US
dc.date.accessioned2022-03-11T16:02:42Z-
dc.date.available2022-03-11T16:02:42Z-
dc.date.issued2021en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/20.500.12386/31556-
dc.description.abstractRecent models for evolved low-mass stars (with M ≲ 3 M o˙), undergoing the asymptotic giant branch (AGB) phase assume that magnetic flux-tube buoyancy drives the formation of 13C reservoirs in He-rich layers. We illustrate their crucial properties, showing how the low abundance of 13C generated below the convective envelope hampers the formation of primary 14N and the ensuing synthesis of intermediate-mass nuclei, like 19F and 22Ne. In the mentioned models, their production is therefore of a purely secondary nature. Shortage of primary 22Ne has also important effects in reducing the neutron density. Another property concerns AGB winds, which are likely to preserve C-rich subcomponents, isolated by magnetic tension, even when the envelope composition is O-rich. Conditions for the formation of C-rich compounds are therefore found in stages earlier than previously envisaged. These issues, together with the uncertainties related to several nuclear physics quantities, are discussed in the light of the isotopic admixtures of s-process elements in presolar SiC grains of stellar origin, which provide important and precise constraints to the otherwise uncertain parameters. By comparing nucleosynthesis results with measured SiC data, it is argued that such a detailed series of constraints indicates the need for new measurements of weak-interaction rates in ionized plasmas, as well as of neutron-capture cross sections, especially near the N = 50 and N = 82 neutron magic numbers. Nonetheless, the peculiarity of our models allows us to achieve fits to the presolar grain data of a quality so far never obtained in previously published attempts.en_US
dc.language.isoengen_US
dc.titlePresolar Grain Isotopic Ratios as Constraints to Nuclear and Stellar Parameters of Asymptotic Giant Branch Star Nucleosynthesisen_US
dc.typeArticle-
dc.identifier.doi10.3847/1538-4357/ac1786en_US
dc.identifier.scopus2-s2.0-85118897146en_US
dc.identifier.isiWOS:000711183700001en_US
dc.identifier.urlhttps://iopscience.iop.org/article/10.3847/1538-4357/ac1786en_US
dc.identifier.urlhttps://api.elsevier.com/content/abstract/scopus_id/85118897146en_US
dc.relation.mediumSTAMPAen_US
dc.relation.volume921en_US
dc.relation.issue1en_US
dc.relation.firstpage7en_US
dc.type.refereeREF_1en_US
dc.description.numberofauthors11en_US
dc.description.internationalnoen_US
dc.contributor.countryITAen_US
dc.relation.scientificsectorFIS/05 - ASTRONOMIA E ASTROFISICAen_US
dc.relation.journalTHE ASTROPHYSICAL JOURNALen_US
dc.type.miur262 Articolo in rivista-
dc.identifier.adsbibcode2021ApJ...921....7Pen_US
dc.description.apcnoen_US
dc.description.oa1 – prodotto con file in versione Open Access (allegare il file al passo  5-Carica)en_US
item.grantfulltextopen-
item.fulltextWith Fulltext-
item.openairetypeArticle-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.journal.journalissn0004-637X-
crisitem.journal.anceE016252-
crisitem.author.deptO.A. Abruzzo-
crisitem.author.deptO.A. Abruzzo-
crisitem.author.orcid0000-0001-9683-9406-
Appears in Collections:1.01 Articoli in rivista
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2107.12037.pdfpreprint3.07 MBAdobe PDFView/Open
Palmerini_2021_ApJ_921_7.pdf[Administrators only]3.18 MBAdobe PDF
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