Astronomia ao Meio-dia
"The origin of the chemical elements" - Roberto da Costa (IAG / USP), 04/04/2018
ABSTRACT: With the exception of hydrogen and part of helium, all other chemical elements we see in the Periodic Table are synthesized exclusively in the nuclei of the stars, so each atom that makes up our bodies has already been in a stellar nucleus. In this presentation we will describe the nucleosynthesis processes that occur in low mass stars and produce elements such as helium, carbon and nitrogen, which occur in stars of intermediate mass and synthesize elements such as oxygen and sulfur and iron, as well as those occurring during the explosions of supernovae and that synthesize elements like uranium or plutonium.
ABSTRACT: With the exception of hydrogen and part of helium, all other chemical elements we see in the Periodic Table are synthesized exclusively in the nuclei of the stars, so each atom that makes up our bodies has already been in a stellar nucleus. In this presentation we will describe the nucleosynthesis processes that occur in low mass stars and produce elements such as helium, carbon and nitrogen, which occur in stars of intermediate mass and synthesize elements such as oxygen and sulfur and iron, as well as those occurring during the explosions of supernovae and that synthesize elements like uranium or plutonium.
"A Origem Dos Elementos químicos" - Roberto da Costa (IAG/USP), 05/04/2018
RESUMO: Com exceção do hidrogênio e de parte do hélio, todos os demais elementos químicos que vemos na Tabela Periódica são sintetizados exclusivamente nos núcleos das estrelas, portanto cada átomo que compõe os nossos corpos já esteve num núcleo estelar. Nessa apresentação serão descritos os processos de nucleossíntese que Ocorrem Nas Estrelas de massa baixa e que produzem elementos como hélio, carbono e nitrogênio, os que ocorrem nas estrelas de massa intermediária e sintetizam elementos como oxigênio e enxofre e ferro, bem como aqueles que ocorrem durante as explosões de supernovas e que sintetizam elementos como urânio ou plutônio.
Fonte: https://www.youtube.com/watch?v=snnAWiRHCd4&t=1636s
This post first appeared on Núcleo De Tecnologia Do MunicÃpio De São José, please read the originial post: here
