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Title Determination of the rotational velocity and spectral classification of four Be/X-ray binaries
Alternative Title Προσδιορισμός της περιστροφικής ταχύτητας και φασματική ταξινόμιση τεσσάρων Be/x-ray binary stars
Author Τριανταφυλλάκη, Αικατερίνη Νιόβη
Thesis advisor Reig, Pablo
Abstract Be stars are very rapidly rotating B stars of the main sequence that, for a yet unknown reason, form an outwardly diffusing, gaseous Keplerian disk around their equator. The formation of this circumstellar disk a is linked with mass ejection processes and fast rotation rates at the Be star’s photosphere. This material has huge amounts of angular momentum and settles in an orbit around the star. This work takes a closer look on four high mass X-ray binary whose accreting material is believed to come from their circumstellar disk. The systems that are analysed in this work are: IGR J01363+6610, IGR J01583+6713, SAX2239.3+6116, and KS 1947+300+300. The main objective if this work is to determine their spectral type and rotational velocities.
Language English
Issue date 2020-03-27
Collection   School/Department--School of Sciences and Engineering--Department of Physics--Graduate theses
  Type of Work--Graduate theses
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