Peculiarities of the Chemical Composition of the Optical Component of Cyg X--1

Details Peculiarities of the Chemical Composition of the Optical Component of Cyg X--1 Peculiarities of the Chemical Composition of the Optical Component of Cyg X--1

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..378..123k&link_type=abstract

Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes. ASP Conference Series, Vol. 378, proceedings of the co

Astronomy and Astrophysics

Astronomy

1

Scientific paper

By using high-resolution spectra and a specially modified model-atmosphere code, we have obtained the main characteristics and chemical composition of the optical component of Cyg X--1. We find a metallicity ([M/H] = 0.34 dex) typical of young stars. The composition has been affected by matter transformation by the reactions of the CNO cycle at the main sequence stage ([N/C] = [N/O] = 0.7 dex) and by light-element burning ([Ne/H] = [Si/H] = 0.7 dex).

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