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Chemical Abundances of the Secondary Stars in the Black Hole Binary A0620-00 and the Neutron Star Binary Cen X-4

Published online by Cambridge University Press:  22 February 2018

J. I. González-Hernández ,
R. Rebolo ,
G. Israelian  and
J. Casares
J. I. González-Hernández
Affiliation:
Instituto de Astrofísica de Canarias, La Laguna, Código Postal E-38200, Tenerife, España. (jonay@ll.iac.es)
R. Rebolo
Affiliation:
Instituto de Astrofísica de Canarias, La Laguna, Código Postal E-38200, Tenerife, España. (jonay@ll.iac.es) Consejo Superior de Investigaciones Cientίficas, España
G. Israelian
Affiliation:
Instituto de Astrofísica de Canarias, La Laguna, Código Postal E-38200, Tenerife, España. (jonay@ll.iac.es)
J. Casares
Affiliation:
Instituto de Astrofísica de Canarias, La Laguna, Código Postal E-38200, Tenerife, España. (jonay@ll.iac.es)

Extract

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We have determined abundances in the secondary stars of the black hole X-ray binary A0620-00 and the neutron star Binary Cen X-4. These are K type stars veiled by the emission produced by the respective accretion discs. We searched for evidence of nucleosynthetic products from the progenitor of the compact object that could have contaminated the secondary stars (as in Israelian et al., 1999).

Using high resolution spectra obtained with VLT/UVES, we have derived in a consistent way stellar parameters and the veiling caused by the accretion disc.

Type
The Contributed Papers
Information
International Astronomical Union Colloquium , Volume 194: Compact binaries in the galaxy and beyond , 2004 , pp. 204
Copyright
Copyright © Instituto de astronomia/revista mexicana de astronomίa y astrofίsica 2004

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