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- W3121569464 abstract "Calculations carried out to model the evolution of HDE 226868, under different assumptions about the stellar wind mass loss rate, provide robust limits on the present mass of the star. It has to be in the range 40±5 M ☉ if the distance to the system is in the range 1.95 to 2.35 kpc and the effective temperature of HDE 226868 in the range 30000 to 31000 K. Including into the analysis observational properties such as the profiles of the emission lines, rotational broadening of the absorption lines and the ellipsoidal light variations, one can estimate also the mass of the compact component. This estimate leads to the result 20±5 M ☉ . The same analysis (using the evolutionary models and the observational properties listed above) yields lower limit to the distance to the system of ~ 2.0 kpc, if the effective temperature of HDE 22868 is higher than 30000 K. This limit to the distance does not depend on any photometric or astrometric considerations." @default.
- W3121569464 created "2021-02-01" @default.
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- W3121569464 date "2004-10-01" @default.
- W3121569464 modified "2023-09-27" @default.
- W3121569464 title "Evolutionary Constraints on the Masses of the Components of HDE 226868/CYG X-1 Binary System" @default.
- W3121569464 hasPublicationYear "2004" @default.
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