Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta
The radioactive decay of short-lived ^26 Al– ^26 Mg has been used to estimate the timescales over which ^26 Al was produced in a nearby star and the protosolar disk evolved. The chronology commonly assumes that ^26 Al was uniformly distributed in the protosolar disk; however, this assumption is chal...
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal Letters |
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| Online Access: | https://doi.org/10.3847/2041-8213/ada554 |
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| author | Tsuyoshi Iizuka Yuki Hibiya Satoshi Yoshihara Takehito Hayakawa |
| author_facet | Tsuyoshi Iizuka Yuki Hibiya Satoshi Yoshihara Takehito Hayakawa |
| author_sort | Tsuyoshi Iizuka |
| collection | DOAJ |
| description | The radioactive decay of short-lived ^26 Al– ^26 Mg has been used to estimate the timescales over which ^26 Al was produced in a nearby star and the protosolar disk evolved. The chronology commonly assumes that ^26 Al was uniformly distributed in the protosolar disk; however, this assumption is challenged by the discordance between the timescales defined by the Al–Mg and assumption-free Pb–Pb chronometers. We find that the ^26 Al heterogeneity is correlated with the nucleosynthetic stable Ti isotope variation, which can be ascribed to the nonuniform distribution of ejecta from a core-collapse supernova in the disk. We use the Al–Ti isotope correlation to calibrate variable ^26 Al abundances in Al–Mg dating of early solar system processes. The calibrated Al–Mg chronometer indicates a ≥1 Myr gap between parent body accretion ages of carbonaceous and noncarbonaceous chondrites. We further use the Al–Ti isotope correlation to constrain the timing and location of the supernova explosion, indicating that the explosion occurred at 20–30 pc from the protosolar cloud, 0.94 +0.25/–0.21 Myr before the formation of the oldest solar system solids. Our results imply that the Sun was born in association with a ∼25 M _ʘ star. |
| format | Article |
| id | doaj-art-89c937fc7c4b410b85a17f494d7af47e |
| institution | Kabale University |
| issn | 2041-8205 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
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| series | The Astrophysical Journal Letters |
| spelling | doaj-art-89c937fc7c4b410b85a17f494d7af47e2025-01-24T09:26:45ZengIOP PublishingThe Astrophysical Journal Letters2041-82052025-01-019792L2910.3847/2041-8213/ada554Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova EjectaTsuyoshi Iizuka0https://orcid.org/0000-0001-7896-5812Yuki Hibiya1https://orcid.org/0000-0002-3346-9820Satoshi Yoshihara2Takehito Hayakawa3https://orcid.org/0000-0001-5286-8395Department of Earth and Planetary Science, The University of Tokyo , Hongo 7-3-1, Bunkyo, Tokyo 113-0033, JapanResearch Center for Advanced Science and Technology, The University of Tokyo , Komaba 4-6-1, Meguro, Tokyo 153-8904, Japan; Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology , Kanagawa 237-0061, JapanDepartment of Earth and Planetary Science, The University of Tokyo , Hongo 7-3-1, Bunkyo, Tokyo 113-0033, JapanKansai Institute for Photon Science, National Institutes for Quantum Science and Technology , Umemidai 8-1-7, Kizugawa, Kyoto 619-0215, JapanThe radioactive decay of short-lived ^26 Al– ^26 Mg has been used to estimate the timescales over which ^26 Al was produced in a nearby star and the protosolar disk evolved. The chronology commonly assumes that ^26 Al was uniformly distributed in the protosolar disk; however, this assumption is challenged by the discordance between the timescales defined by the Al–Mg and assumption-free Pb–Pb chronometers. We find that the ^26 Al heterogeneity is correlated with the nucleosynthetic stable Ti isotope variation, which can be ascribed to the nonuniform distribution of ejecta from a core-collapse supernova in the disk. We use the Al–Ti isotope correlation to calibrate variable ^26 Al abundances in Al–Mg dating of early solar system processes. The calibrated Al–Mg chronometer indicates a ≥1 Myr gap between parent body accretion ages of carbonaceous and noncarbonaceous chondrites. We further use the Al–Ti isotope correlation to constrain the timing and location of the supernova explosion, indicating that the explosion occurred at 20–30 pc from the protosolar cloud, 0.94 +0.25/–0.21 Myr before the formation of the oldest solar system solids. Our results imply that the Sun was born in association with a ∼25 M _ʘ star.https://doi.org/10.3847/2041-8213/ada554Solar system formationCore-collapse supernovaeMeteoritesStellar nucleosynthesisProtoplanetary disksIsotope shifts |
| spellingShingle | Tsuyoshi Iizuka Yuki Hibiya Satoshi Yoshihara Takehito Hayakawa Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta The Astrophysical Journal Letters Solar system formation Core-collapse supernovae Meteorites Stellar nucleosynthesis Protoplanetary disks Isotope shifts |
| title | Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta |
| title_full | Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta |
| title_fullStr | Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta |
| title_full_unstemmed | Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta |
| title_short | Timescales of Solar System Formation Based on Al–Ti Isotope Correlation by Supernova Ejecta |
| title_sort | timescales of solar system formation based on al ti isotope correlation by supernova ejecta |
| topic | Solar system formation Core-collapse supernovae Meteorites Stellar nucleosynthesis Protoplanetary disks Isotope shifts |
| url | https://doi.org/10.3847/2041-8213/ada554 |
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