The Ionization Structure of Cygnus X-3 - a Massive Iron-Depleted Companion

Details The Ionization Structure of Cygnus X-3 - a Massive Iron-Depleted Companion The Ionization Structure of Cygnus X-3 - a Massive Iron-Depleted Companion

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.265l...1t&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 265, NO. 1/NOV1, P. L1, 1993

Astronomy and Astrophysics

Astronomy

4

Acceleration Of Particles - Stars: Individual: Cygnus X-3 - Stars: Mass-Loss - Stars: Wolf-Rayet - X-Rays: Stars

Scientific paper

We investigate the ionization structure of the stellar wind of the Cygnus X-3 binary, exposed to luminous X-ray emission from the compact object. Comparing the simulated X-ray spectra with the observed ones, we find that the companion star is fairly massive (5 ≲ M ≲ 10 Msun), and that iron in the stellar wind is somewhat depleted, to 0.1-0.5 times the cosmic abundance. The phase-to-phase change of the X-ray spectrum implies that the wind gas is enriched in any one of C, N or O. These results strongly support the recent infrared observation.

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