High lithium abundance in the secondary of the black-hole binary system V404 Cygni

Details High lithium abundance in the secondary of the black-hole binary system V404 Cygni High lithium abundance in the secondary of the black-hole binary system V404 Cygni

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.358..129m&link_type=abstract

Nature (ISSN 0028-0836), vol. 358, no. 6382, July 9, 1992, p. 129-131.

Astronomy and Astrophysics

Astronomy

55

Abundance, Black Holes (Astronomy), Lithium, Stellar Spectra, Absorption Spectra, Cygnus Constellation, Interstellar Matter, Line Spectra, Local Thermodynamic Equilibrium, X Ray Binaries

Scientific paper

The discovery of lithium in the spectrum of the binary system V404 Cygni is described. A high lithium abundance in the secondary star, close to that of very young stars, is derived. Without lithium production, the secondary would have to be comparable in age to the Pleiades cluster. If the system is not being seen at an early moment in its lifetime, there must have been lithium production which could be associated with either the supernova explosion that created it or the accretion disk now there.

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