Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28909
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 | Gallino, Roberto | en_US |
dc.contributor.author | Boehnke, Patrick | 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.contributor.author | Trappitsch, Reto | en_US |
dc.contributor.author | Pellin, Michael J. | en_US |
dc.contributor.author | Dillmann, Iris | en_US |
dc.date.accessioned | 2020-12-17T10:05:09Z | - |
dc.date.available | 2020-12-17T10:05:09Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28909 | - |
dc.description.abstract | We report Mo isotopic compositions of 37 presolar SiC grains of types Y (19) and Z (18), rare types commonly argued to have formed in lower-than-solar metallicity asymptotic giant branch (AGB) stars. Direct comparison of the Y and Z grain data with data for mainstream grains from AGB stars of close-to-solar metallicity demonstrates that the three types of grains have indistinguishable Mo isotopic compositions. We show that the Mo isotope data can be used to constrain the maximum stellar temperatures (T MAX) during thermal pulses in AGB stars. Comparison of FRUITY Torino AGB nucleosynthesis model calculations with the grain data for Mo isotopes points to an origin from low-mass (∼1.5-3 M ☉) rather than intermediate-mass (>3-∼9 M ☉) AGB stars. Because of the low efficiency of 22Ne(α, n)25Mg at the low T MAX values attained in low-mass AGB stars, model calculations cannot explain the large 30Si excesses of Z grains as arising from neutron capture, so these excesses remain a puzzle at the moment. | en_US |
dc.language.iso | eng | en_US |
dc.title | Presolar Silicon Carbide Grains of Types Y and Z: Their Molybdenum Isotopic Compositions and Stellar Origins | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/1538-4357/ab2d27 | en_US |
dc.identifier.scopus | 2-s2.0-85072023648 | en_US |
dc.identifier.isi | 000480383700001 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/1538-4357/ab2d27 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 881 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 28 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 11 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | CAN | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019ApJ...881...28L | 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. Abruzzo | - |
crisitem.author.orcid | 0000-0001-9683-9406 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Liu_2019_ApJ_881_28.pdf | Pdf editoriale | 1.19 MB | Adobe PDF | View/Open |
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