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Number of entries: 1

20
April 2018

White dwarfs and the meteoritic Ne-E anomaly


Start: 12:15h
Speaker: Jordi Isern Vilaboy
Place: Alberto Lobo Seminar Room (ICE, UAB Campus)

The analysis of the noble gas content in primitive meteorites has shown the existence of anomalous isotopic abundances when compared the Solar System values. These anomalies led to the idea that the collapse of the primitive solar nebula was triggered by the explosion of a nearby supernova. In particular…
Start: 12:15h
Speaker: Jordi Isern Vilaboy
Place: Alberto Lobo Seminar Room (ICE, UAB Campus)

The analysis of the noble gas content in primitive meteorites has shown the existence of anomalous isotopic abundances when compared the Solar System values. These anomalies led to the idea that the collapse of the primitive solar nebula was triggered by the explosion of a nearby supernova. In particular it has been found that some graphite grains contain a 22Ne rich component that is usually attributed to the radioactive decay of 22Na produced in the O/Ne burning layers of a supernova. In this talk we speculate about a different origin, the disruption of a white dwarf by a collision with a compact object: a white dwarf, a neutron star or a blackhole.
Institute of Space Sciences (IEEC-CSIC)

Campus UAB, Carrer de Can Magrans, s/n
08193 Barcelona.
Phone: +34 93 737 9788
Email: ice@ice.csic.es
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An institute of the Consejo Superior de Investigaciones Científicas

An institute of the Consejo Superior de Investigaciones Científicas
Affiliated with the Institut d'Estudis Espacials de Catalunya

Affiliated with the Institut d'Estudis Espacials de Catalunya