Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32969
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Liu, Nan | en_US |
dc.contributor.author | Stephan, Thomas | en_US |
dc.contributor.author | CRISTALLO, Sergio | en_US |
dc.contributor.author | VESCOVI, DIEGO | en_US |
dc.contributor.author | Gallino, Roberto | en_US |
dc.contributor.author | Nittler, Larry R. | en_US |
dc.contributor.author | Alexander, Conel M.O’ D. | en_US |
dc.contributor.author | Davis, Andrew M. | en_US |
dc.date.accessioned | 2023-01-20T16:07:01Z | - |
dc.date.available | 2023-01-20T16:07:01Z | - |
dc.date.issued | 2022 | en_US |
dc.identifier.issn | 1434-6001 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32969 | - |
dc.description.abstract | We report the Sr and Ba isotopic compositions of 18 presolar SiC grains of types Y (11) and Z (7), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant branch (AGB) stars. We find that the Y and Z grains show higher 88Sr/87Sr and more variable 138Ba/136Ba ratios than mainstream (MS) grains. According to FRANEC Torino AGB models, the Si, Sr, and Ba isotopic compositions of our Y and Z grains can be consistently explained if the grains came from low-mass AGB stars with 0.15 Z⊙ ≤ Z < 1.00 Z⊙, in which the 13C neutron exposure for the slow neutron-capture process is greatly reduced with respect to that required by MS grains for a 1.0 Z⊙ AGB star. This scenario is in line with the previous finding based on Ti isotopes, but it fails to explain the indistinguishable Mo isotopic compositions of MS, Y, and Z grains. | en_US |
dc.language.iso | eng | en_US |
dc.title | Presolar silicon carbide grains of types Y and Z: their strontium and barium isotopic compositions and stellar origins | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1140/epja/s10050-022-00838-z | en_US |
dc.identifier.scopus | 2-s2.0-85141782303 | en_US |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85141782303 | en_US |
dc.identifier.url | https://link.springer.com/article/10.1140/epja/s10050-022-00838-z | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 58 | en_US |
dc.relation.issue | 11 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 8 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI | en_US |
dc.type.miur | 262 Articolo in rivista | - |
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. Abruzzo | - |
crisitem.author.dept | O.A. Abruzzo | - |
crisitem.author.orcid | 0000-0001-9683-9406 | - |
crisitem.author.orcid | 0000-0003-0309-4666 | - |
crisitem.journal.journalissn | 1434-6001 | - |
crisitem.journal.ance | E060832 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
2209.10347.pdf | preprint | 7.21 MB | Adobe PDF | View/Open |
Liu_2022_EPJA_58_216.pdf | [Administrators only] | 1.85 MB | Adobe PDF |
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