Asymptotic Giant Branch Stars and presolar grains
Starting from the recognition that radioactive isotopes were present alive in the Early Solar System, inducing composition anomalies from their decay, and through the discovery that other important anomalies affected also stable species, we shall discuss how the carriers of these abundance peculiari...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2020-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2020/03/epjconf_enas2020_01002.pdf |
| _version_ | 1818366142597562368 |
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| author | Busso Maurizio Palmerini Sara Vescovi Diego |
| author_facet | Busso Maurizio Palmerini Sara Vescovi Diego |
| author_sort | Busso Maurizio |
| collection | DOAJ |
| description | Starting from the recognition that radioactive isotopes were present alive in the Early Solar System, inducing composition anomalies from their decay, and through the discovery that other important anomalies affected also stable species, we shall discuss how the carriers of these abundance peculiarities were identified in very refractory pre-solar dust grains, formed in circumstellar environments. We shall outline how groups of such grains and subsequently in-dividual single crystals of C-rich or O-rich materials (like, e.g., SiC and Al2O3) could be analyzed, providing a new tool to verify the composition of stellar winds. This is so especially for AGB stars, which are the primary factories of dust in the Galaxy. For this reason, pristine meteorites open a crucial window on the details of nucleosynthesis processes occurring in such evolved red giants, for both intermediate-mass elements and rare heavy nuclei affected by slow neutron captures (the s-process). |
| first_indexed | 2024-12-13T22:31:28Z |
| format | Article |
| id | doaj.art-d27892a3c2294b6aa8aec6406c1f43c1 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-13T22:31:28Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-d27892a3c2294b6aa8aec6406c1f43c12022-12-21T23:29:05ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012270100210.1051/epjconf/202022701002epjconf_enas2020_01002Asymptotic Giant Branch Stars and presolar grainsBusso MaurizioPalmerini SaraVescovi DiegoStarting from the recognition that radioactive isotopes were present alive in the Early Solar System, inducing composition anomalies from their decay, and through the discovery that other important anomalies affected also stable species, we shall discuss how the carriers of these abundance peculiarities were identified in very refractory pre-solar dust grains, formed in circumstellar environments. We shall outline how groups of such grains and subsequently in-dividual single crystals of C-rich or O-rich materials (like, e.g., SiC and Al2O3) could be analyzed, providing a new tool to verify the composition of stellar winds. This is so especially for AGB stars, which are the primary factories of dust in the Galaxy. For this reason, pristine meteorites open a crucial window on the details of nucleosynthesis processes occurring in such evolved red giants, for both intermediate-mass elements and rare heavy nuclei affected by slow neutron captures (the s-process).https://www.epj-conferences.org/articles/epjconf/pdf/2020/03/epjconf_enas2020_01002.pdf |
| spellingShingle | Busso Maurizio Palmerini Sara Vescovi Diego Asymptotic Giant Branch Stars and presolar grains EPJ Web of Conferences |
| title | Asymptotic Giant Branch Stars and presolar grains |
| title_full | Asymptotic Giant Branch Stars and presolar grains |
| title_fullStr | Asymptotic Giant Branch Stars and presolar grains |
| title_full_unstemmed | Asymptotic Giant Branch Stars and presolar grains |
| title_short | Asymptotic Giant Branch Stars and presolar grains |
| title_sort | asymptotic giant branch stars and presolar grains |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2020/03/epjconf_enas2020_01002.pdf |
| work_keys_str_mv | AT bussomaurizio asymptoticgiantbranchstarsandpresolargrains AT palmerinisara asymptoticgiantbranchstarsandpresolargrains AT vescovidiego asymptoticgiantbranchstarsandpresolargrains |