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Titolo:
NUCLEOSYNTHESIS IN STARS - RECENT DEVELOPMENTS
Autore:
ARNETT D; BAZAN G;
Indirizzi:
UNIV ARIZONA,STEWARD OBSERV TUCSON AZ 85721 LAWRENCE LIVERMORE NATL LAB LIVERMORE CA 94551
Titolo Testata:
Science
fascicolo: 5317, volume: 276, anno: 1997,
pagine: 1359 - 1362
SICI:
0036-8075(1997)276:5317<1359:NIS-RD>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAMMA-RAY LINE; NEUTRINO-DRIVEN WINDS; METAL-POOR STARS; SUPERNOVA 1987A; COMPTEL OBSERVATIONS; PROTONEUTRON STARS; HALO STARS; EMISSION; SN-1987A; CONVECTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
86
Recensione:
Indirizzi per estratti:
Citazione:
D. Arnett e G. Bazan, "NUCLEOSYNTHESIS IN STARS - RECENT DEVELOPMENTS", Science, 276(5317), 1997, pp. 1359-1362

Abstract

The development of new observational, experimental, and computationaltechnologies is changing our understanding of the origins of the elements by thermonuclear burning in stars. Gamma-ray lines from newly made radioactive nuclei have been identified using instruments onboard low-Earth orbiting satellites. Grains in meteorites have isotopic anomalies which suggest that the grains were put together in a stellar explosion such as a supernova. Computer simulations allow such anomalies tobe used to probe how these events happen. The simulations are being independently tested by experiments with high-energy density lasers, These developments are beginning to provide a quantitative diagnostic ofgalactic evolution, and of the epoch of formation of the first stars and galaxies.

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Documento generato il 26/11/20 alle ore 09:06:17