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Structure and evolution of large groups of Massive Close Binary systems
Using the definition of four important events in the evolution ofMassive Close Binary systems, five observable evolutionary phases aredefined in the life of a Massive Close Binary system: OB plus OB, WRplus OB, C plus OB, C plus WR, and WR plus WR. A number of observablephenomena are defined and computed for large groups of Massive CloseBinaries. For one burst of star formation, the number of systems indifferent evolutionary phases is computed, along with the total massloss as functions of the time. For continuous star formation, thefraction of WR binary stars, occurring in different phases of massiveclose binary evolution, and a number of average quantities (mass, massratio) of WR binary systems are determined. The results are comparedwith observations of WR binaries in the Galaxy and in Open Clusters.
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Observation and Astrometry data
| Constellation: | Aquila |
| Right ascension: | 19h44m12.61s |
| Declination: | +06°10'26.4" |
| Apparent magnitude: | 9.474 |
| Proper motion RA: | 4.9 |
| Proper motion Dec: | -4.9 |
| B-T magnitude: | 9.78 |
| V-T magnitude: | 9.5 |
Catalogs and designations:
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