Abstract
HEAO-B (Einstein) satellite measurements with the Imaging Proportional Counter revealed the W UMa binary system TZ Bootis as an X-ray source. It is estimated that the luminosity ratioL x/Lvof this system is about 10−3.8 indicating that TZ Bootis is in the transition region between A- and W-type W UMa systems.
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References
Al-Naimiy, H. M. K.: 1982,Astron. J. 87, 1041.
Dupree, A. K.: 1981, in R. M. Bonnett and A. K. Dupree (eds.),Solar Phenomena in Stars and Stellar Systems, D. Reidel Publ. Co., Dordrecht, Holland, p. 407.
Dworak, T. Z.: 1975,Acta Astron. 25, 383.
Eggen, O. J.: 1967,Mem. Roy. Astron. Soc. 70, 111.
Geyer, E. H.: 1976, in P. Eggleton, S. Mitton, and J. Whelan (eds.), ‘Structure and Evolution of Close Binary Systems’,IAU Symp. 73, 313.
Geyer, E. H.: 1980, in M. J. Plavec, D. M. Popper, and R. K., Ulrich (eds.), ‘Close Binary Stars: Observations and Interpretation’,IAU Symp. 88, 423.
Heiles, C.: 1975,Astron. Astrophys. Suppl. 20, 37.
Hoffman, M.: 1978,Astron. Astrophys. Suppl. Ser. 33, 63.
Hoffman, M.: 1980,Astron. Astrophys. Suppl. Ser. 40, 263.
Mochnacki, S. W.: 1981,Astrophys. J. 245, 650.
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Geyer, E.H., Hoffmann, M. X-ray emission from the W UMa system TZ Bootis. Astrophys Space Sci 97, 225–227 (1983). https://doi.org/10.1007/BF00653484
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DOI: https://doi.org/10.1007/BF00653484