GX301-2/WRA9777 revisited: Probing the stellar wind through X ray optical data

Details GX301-2/WRA9777 revisited: Probing the stellar wind through X ray optical data GX301-2/WRA9777 revisited: Probing the stellar wind through X ray optical data

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992eocm.rept..173j&link_type=abstract

In ESA, Environment Observation and Climate Modelling Through International Space Projects. Space Sciences with Particular Empha

Astronomy and Astrophysics

Astronomy

Companion Stars, Stellar Winds, Supergiant Stars, Velocity Distribution, X Ray Binaries, Acceleration (Physics), Astronomical Spectroscopy, Blue Stars, Stellar Mass, X Ray Astronomy

Scientific paper

An eccentric, massive x-ray binary provides a singularly favorable opportunity to probe the stellar wind of the blue supergiant companion star: the velocity profile can be derived with the help of the x-ray luminosity and of the rate of mass loss from the primary. Optical spectroscopic observations and contemporary x-ray measurements are used to estimate the acceleration of the wind of WRA 977. The mass loss rate along the orbit is deduced from H beta P Cyg profiles. Data from 1977 indicate a velocity law considerably slower than that predicted by radiation driven model.

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