The RADIOSTAR project
| dc.contributor.author | Lugaro, Maria | |
| dc.contributor.author | Côté, Benoit | |
| dc.contributor.author | Pignatari, Marco | |
| dc.contributor.author | Yagüe López, Andrés | |
| dc.contributor.author | Brinkman, Hannah | |
| dc.contributor.author | Cseh, Borbála | |
| dc.contributor.author | Den Hartogh, Jacqueline | |
| dc.contributor.author | Doherty, Carolyn Louise | |
| dc.contributor.author | Karakas, Amanda Irene | |
| dc.contributor.author | Kobayashi, Chiaki | |
| dc.contributor.author | Lawson, Thomas | |
| dc.contributor.author | Pető, Mária | |
| dc.contributor.author | Soós, Benjámin | |
| dc.contributor.author | Világos, Blanka | |
| dc.date.accessioned | 2022-10-27T16:51:19Z | |
| dc.date.available | 2022-10-27T16:51:19Z | |
| dc.date.copyright | 2022 | en_US |
| dc.date.issued | 2022 | |
| dc.description.abstract | Radioactive nuclei are the key to understanding the circumstances of the birth of our Sun because meteoritic analysis has proven that many of them were present at that time. Their origin, however, has been so far elusive. The ERC-CoG-2016 RADIOSTAR project is dedicated to investigating the production of radioactive nuclei by nuclear reactions inside stars, their evolution in the MilkyWay Galaxy, and their presence in molecular clouds. So far, we have discovered that: (i) radioactive nuclei produced by slow (107^Pd and 182^Hf) and rapid (129^I and 247^Cm) neutron captures originated from stellar sources —asymptotic giant branch (AGB) stars and compact binary mergers, respectively—within the galactic environment that predated the formation of the molecular cloud where the Sun was born; (ii) the time that elapsed from the birth of the cloud to the birth of the Sun was of the order of 10^7 years, and (iii) the abundances of the very short-lived nuclei 26^Al, 36^Cl, and 41^Ca can be explained by massive star winds in single or binary systems, if these winds directly polluted the early Solar System. Our current and future work, as required to finalise the picture of the origin of radioactive nuclei in the Solar System, involves studying the possible origin of radioactive nuclei in the early Solar System from core-collapse supernovae, investigating the production of 107^Pd in massive star winds, modelling the transport and mixing of radioactive nuclei in the galactic and molecular cloud medium, and calculating the galactic chemical evolution of 53^Mn and 60^Fe and of the p-process isotopes 92^Nb and 146^Sm. | en_US |
| dc.description.reviewstatus | Reviewed | en_US |
| dc.description.scholarlevel | Faculty | en_US |
| dc.description.sponsorship | This research was funded by ERC via CoG-2016 RADIOSTAR (Grant Agreement 724560). | en_US |
| dc.identifier.citation | Lugaro, M., Côté, B., Pignatari, M., Yagüe López, A., Brinkman, H., Cseh, B, . . . Világos, B. (2022). “The RADIOSTAR project.” Universe, 8(2), 130. https://doi.org/10.3390/universe8020130 | en_US |
| dc.identifier.uri | https://doi.org/10.3390/universe8020130 | |
| dc.identifier.uri | http://hdl.handle.net/1828/14336 | |
| dc.language.iso | en | en_US |
| dc.publisher | Universe | en_US |
| dc.subject | short-lived radioactivity | |
| dc.subject | early Solar System | |
| dc.subject | stellar nucleosynthesis | |
| dc.subject | galactic chemical evolution | |
| dc.subject.department | Department of Physics and Astronomy | |
| dc.title | The RADIOSTAR project | en_US |
| dc.type | Article | en_US |