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[Fizinfo] Ortvay kollokvium

Chronological Thread 
  • From: szpl <szpl AT>
  • To: <fizinfo AT>
  • Subject: [Fizinfo] Ortvay kollokvium
  • Date: Fri, 18 Oct 2019 13:26:48 +0200

ELTE Fizikai Intézet


2019. október 24., csütörtök, 15:00-kor
Az ELTE Pázmány Péter s. 1/A alatti épületében
földszinti 0.81 előadóban

Maria Lugaro
(Konkoly Thege Miklós Csillagászati Intézet)

Radioactive nuclei from cosmochronology to habitability

Kivonatos ismertetés:
The analysis of meteorites shows that radioactive nuclei with half-lives or the order of millions of years were present at the birth of the Sun. The heat generated by the decay of one of such nuclei, aluminium-26, in the first few million years of the life of Solar System affected the thermo-mechanical and chemical evolution of planetesimals and the delivery of water to the Earth. By comparing meteoritic data to predictions for the production and evolution of radioactive nuclei in the Milky Way we are building a time line for the events that predated the birth of the Sun. The final aims are to identify the type of the stellar nursery where the Sun was born, understand the still mysterious origin of aluminium-26, and decide if its presence in proto-planetary disks is normal or special.

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