Titlebook: Double Stars, Physical Properties and Generic Relations; Proceeding of IAU Co Bambang Hidayat,Zdeněk Kopal,Jürgen Rahe Conference proceedin

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Sandeep Narula,Narma Bhattacharyamponent whose orbital period about the eclipsing pair is about 120 days. In recent years there have been several new photoelectric and spectroscopic investigations of this system, and the results of these are compared. Both the geometric and photometric orbital elements appear to be well determined.

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https://doi.org/10.1007/978-981-16-4888-54.In order to assess the relative importance of massive binary evolution as one of the ways to produce WR stars, the galactic distribution of WR binaries is compared with that of single WR stars using improved intrinsic parameters and new data for the fainter WR stars..In the galactic plane the incr

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https://doi.org/10.1007/978-981-16-0893-3The photometric variability of CPD-48.1577 in the optical and IR ranges is discussed. The structure and variation of prominent emission line profiles are investigated. An estimate of the distance is given.

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Fission Sequence and Equilibrium Models of Rigidity Rotating Polytropes,Equilibrium sequences of self-gravitating and polytropic stars including binary stars are computed for various polytropic indexes. We find a fission sequence from an ellipsoidal configuration to a binary by way of dumb-bell equilibrium.